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<title>ALSA project - the C library reference: Hardware Dependant Interface</title>
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<h1>Hardware Dependant Interface</h1><table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gadbdb136d096a033b5a37da051334c311">SND_HWDEP_DLSYM_VERSION</a> _dlsym_hwdep_001</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga0c719693523de2875822c7c488aa46af">SND_HWDEP_OPEN_READ</a> (O_RDONLY)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga256f488476a56156609160ce2a8ff4fb">SND_HWDEP_OPEN_WRITE</a> (O_WRONLY)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga65dd0ca8c1810b8e9c7f9d95a09d444f">SND_HWDEP_OPEN_DUPLEX</a> (O_RDWR)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaf29d78d2741d1b7dc2647cd2e6525a10">SND_HWDEP_OPEN_NONBLOCK</a> (O_NONBLOCK)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga209969eb18c5461a5cf2ce331c8d0898">snd_hwdep_info_alloca</a>(ptr) __snd_alloca(ptr, snd_hwdep_info)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaa8ff5094038689503524a6c38e7064cd">snd_hwdep_dsp_status_alloca</a>(ptr) __snd_alloca(ptr, snd_hwdep_dsp_status)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga228ee5cb7404cabc425d8aa135287475">snd_hwdep_dsp_image_alloca</a>(ptr) __snd_alloca(ptr, snd_hwdep_dsp_image)</td></tr>
<tr><td colspan="2"><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct _snd_hwdep_info </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <br class="typebreak"/>
_snd_hwdep_dsp_status </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct _snd_hwdep_dsp_image </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct _snd_hwdep </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a></td></tr>
<tr><td colspan="2"><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga288eb9342aaea8317a7bfa03b22feaca">snd_hwdep_iface_t</a> { <br/>
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa06892f4442380329139dfd755454b3d1">SND_HWDEP_IFACE_OPL2</a> = 0,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa952e48f4f4fc5fb7f2472c5d0c679b36">SND_HWDEP_IFACE_OPL3</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa122462f3f79578ac7408b476313ffa72">SND_HWDEP_IFACE_OPL4</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa1043d86e7c1b34d3b844892674406aa4">SND_HWDEP_IFACE_SB16CSP</a>,
<br/>
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa805de2b442f7da96cea9d3864df67f14">SND_HWDEP_IFACE_EMU10K1</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa469940712513383aeb94e239e3388efb">SND_HWDEP_IFACE_YSS225</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaafcd56e8aff83d4be3a9708f7d9f74204">SND_HWDEP_IFACE_ICS2115</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaad85f235cbfcb8ba4300d3ef6252ea62c">SND_HWDEP_IFACE_SSCAPE</a>,
<br/>
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa4a96dcd5734fe382cbfe8545522fa7e8">SND_HWDEP_IFACE_VX</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa47cfeee8ec9532f213b2151c9f411990">SND_HWDEP_IFACE_MIXART</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaae7f996ad6c0601e558353404e32c4366">SND_HWDEP_IFACE_USX2Y</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa01f290961f48f4981d91b158f517000f">SND_HWDEP_IFACE_EMUX_WAVETABLE</a>,
<br/>
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaaa644270f5423d396c973f32c82d489bf">SND_HWDEP_IFACE_BLUETOOTH</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa72513cceee36da63f12514742d491a29">SND_HWDEP_IFACE_USX2Y_PCM</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa1871ee51a3434c7cf0e1afdff93c5775">SND_HWDEP_IFACE_PCXHR</a>,
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa517dcdf103a96fab2aad10e8df123afc">SND_HWDEP_IFACE_SB_RC</a>,
<br/>
<a class="el" href="group___hw_dep.html#gga288eb9342aaea8317a7bfa03b22feacaa08d49aeea9f376daf523a8f7b2825744">SND_HWDEP_IFACE_LAST</a> = SND_HWDEP_IFACE_SB_RC
<br/>
}</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga839de1d3a2bf9495cc631c08099bca79">snd_hwdep_type_t</a> { <a class="el" href="group___hw_dep.html#gga839de1d3a2bf9495cc631c08099bca79a177e7de0de2e799ff985de775ebee841">SND_HWDEP_TYPE_HW</a>,
<a class="el" href="group___hw_dep.html#gga839de1d3a2bf9495cc631c08099bca79a59cee94d2b24ab7d23be97cb88705e64">SND_HWDEP_TYPE_SHM</a>,
<a class="el" href="group___hw_dep.html#gga839de1d3a2bf9495cc631c08099bca79ae9843ef92e5b944c9b0623389a38fe29">SND_HWDEP_TYPE_INET</a>
}</td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaade8a9030fadb398fdb6d139f360f07e">snd_hwdep_open</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> **hwdep, const char *name, int mode)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Opens a new connection to the HwDep interface. <a href="#gaade8a9030fadb398fdb6d139f360f07e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga35ba1e894c069b37012604abf1432314">snd_hwdep_close</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">close HwDep handle <a href="#ga35ba1e894c069b37012604abf1432314"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga179b89384deb4c5a76b7017e6ba6af88">snd_hwdep_poll_descriptors</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, struct pollfd *pfds, unsigned int space)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get poll descriptors <a href="#ga179b89384deb4c5a76b7017e6ba6af88"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga654b2c89f1e6bc16e590161340f1e3d9">snd_hwdep_poll_descriptors_revents</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get returned events from poll descriptors <a href="#ga654b2c89f1e6bc16e590161340f1e3d9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga6eaa5f13367625587fdd955fb4cb4c51">snd_hwdep_nonblock</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, int nonblock)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set nonblock mode <a href="#ga6eaa5f13367625587fdd955fb4cb4c51"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga97f208875f4ec6a253f088e3c2c084c1">snd_hwdep_info</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *info)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get information about HwDep handle <a href="#ga97f208875f4ec6a253f088e3c2c084c1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaf071b6171019a11a72367cc7f9613f5d">snd_hwdep_dsp_status</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *status)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the DSP status information <a href="#gaf071b6171019a11a72367cc7f9613f5d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga7316c8ce8d4ba06b58e6536e3cf96223">snd_hwdep_dsp_load</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *block)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">load the DSP block <a href="#ga7316c8ce8d4ba06b58e6536e3cf96223"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga74f5260b0f5f779932bfe7afcf68ecb1">snd_hwdep_ioctl</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, unsigned int request, void *arg)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">do hardware dependent ioctl <a href="#ga74f5260b0f5f779932bfe7afcf68ecb1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">ssize_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga4c158ce0db68b8bfac1a00abe5e2ffcd">snd_hwdep_write</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, const void *buffer, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">write bytes using HwDep handle <a href="#ga4c158ce0db68b8bfac1a00abe5e2ffcd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">ssize_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga7ef0c6e7ae7b838d509dd09b800b321f">snd_hwdep_read</a> (<a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> *hwdep, void *buffer, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">read bytes using HwDep handle <a href="#ga7ef0c6e7ae7b838d509dd09b800b321f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gad39906514d5d04b7ebcc190382b8bd27">snd_hwdep_info_sizeof</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get size of the snd_hwdep_info_t structure in bytes <a href="#gad39906514d5d04b7ebcc190382b8bd27"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gab6831cd666bea427ab3779710e90a857">snd_hwdep_info_malloc</a> (<a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> **ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">allocate a new snd_hwdep_info_t structure <a href="#gab6831cd666bea427ab3779710e90a857"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga9e19ef5118f808962689c3d947af1a00">snd_hwdep_info_free</a> (<a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">frees the snd_hwdep_info_t structure <a href="#ga9e19ef5118f808962689c3d947af1a00"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga3132936fc99968e59df02711d2927018">snd_hwdep_info_copy</a> (<a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *dst, const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">copy one snd_hwdep_info_t structure to another <a href="#ga3132936fc99968e59df02711d2927018"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga23deebecc5e88b0124222ebf73999c24">snd_hwdep_info_get_device</a> (const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get hwdep device number <a href="#ga23deebecc5e88b0124222ebf73999c24"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga04193d4395908c0e31ac826ac05d3824">snd_hwdep_info_get_card</a> (const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get hwdep card number <a href="#ga04193d4395908c0e31ac826ac05d3824"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga80bb1ca217fa051086e7f2ab5821ee34">snd_hwdep_info_get_id</a> (const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get hwdep driver identifier <a href="#ga80bb1ca217fa051086e7f2ab5821ee34"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaf7f6251acc0f26d6fefc2c28fcf90c6a">snd_hwdep_info_get_name</a> (const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get hwdep driver name <a href="#gaf7f6251acc0f26d6fefc2c28fcf90c6a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___hw_dep.html#ga288eb9342aaea8317a7bfa03b22feaca">snd_hwdep_iface_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga7d846bea699c0917f54d75fe5d76a58e">snd_hwdep_info_get_iface</a> (const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get hwdep protocol interface <a href="#ga7d846bea699c0917f54d75fe5d76a58e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga5f497ef1c3a675af203923d93eda4202">snd_hwdep_info_set_device</a> (<a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> *obj, unsigned int val)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set hwdep device number <a href="#ga5f497ef1c3a675af203923d93eda4202"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga54205faff69bdd35b996863094bafada">snd_hwdep_dsp_status_sizeof</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get size of the snd_hwdep_dsp_status_t structure in bytes <a href="#ga54205faff69bdd35b996863094bafada"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga444c5bd71b0a3756084450dfb7528c6d">snd_hwdep_dsp_status_malloc</a> (<a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> **ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">allocate a new snd_hwdep_dsp_status_t structure <a href="#ga444c5bd71b0a3756084450dfb7528c6d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaa7d3a0f8f01805b10342581893e9671e">snd_hwdep_dsp_status_free</a> (<a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">frees the snd_hwdep_dsp_status_t structure <a href="#gaa7d3a0f8f01805b10342581893e9671e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gacc06c08ac09beec6b50fddf5496ce25b">snd_hwdep_dsp_status_copy</a> (<a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *dst, const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">copy one snd_hwdep_dsp_status_t structure to another <a href="#gacc06c08ac09beec6b50fddf5496ce25b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga52f6b403c2a4947c647043fdd7c5dbf7">snd_hwdep_dsp_status_get_version</a> (const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the driver version of dsp loader <a href="#ga52f6b403c2a4947c647043fdd7c5dbf7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga3f62477a689ef9e84048f7ba8e33a792">snd_hwdep_dsp_status_get_id</a> (const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the driver id of dsp loader <a href="#ga3f62477a689ef9e84048f7ba8e33a792"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gac49bce861455b700ba79c3eb9f73aae9">snd_hwdep_dsp_status_get_num_dsps</a> (const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get number of dsp blocks <a href="#gac49bce861455b700ba79c3eb9f73aae9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga6c5e57aaf95a248814897bd80e12edf4">snd_hwdep_dsp_status_get_dsp_loaded</a> (const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the bit flags of the loaded dsp blocks <a href="#ga6c5e57aaf95a248814897bd80e12edf4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaf49d8044583b6f0c890bbb6a493734e8">snd_hwdep_dsp_status_get_chip_ready</a> (const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the chip status of dsp loader <a href="#gaf49d8044583b6f0c890bbb6a493734e8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga8a5e773b145d973ea5c75057974a371d">snd_hwdep_dsp_image_sizeof</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get size of the snd_hwdep_dsp_image_t structure in bytes <a href="#ga8a5e773b145d973ea5c75057974a371d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gacf44ffc69400d7d195809c18cb71f89d">snd_hwdep_dsp_image_malloc</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> **ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">allocate a new snd_hwdep_dsp_image_t structure <a href="#gacf44ffc69400d7d195809c18cb71f89d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga95c9c00e3b9b20ba6a92ac9d14c5cfdd">snd_hwdep_dsp_image_free</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">frees the snd_hwdep_dsp_image_t structure <a href="#ga95c9c00e3b9b20ba6a92ac9d14c5cfdd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga4178c718645804dffde98bf210e447b5">snd_hwdep_dsp_image_copy</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *dst, const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">copy one snd_hwdep_dsp_image_t structure to another <a href="#ga4178c718645804dffde98bf210e447b5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gada5fa0eaa5a4a941dc5b79ae1897db76">snd_hwdep_dsp_image_get_index</a> (const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the DSP block index <a href="#gada5fa0eaa5a4a941dc5b79ae1897db76"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga025e4656f44f73d8c372b8b10285f202">snd_hwdep_dsp_image_get_name</a> (const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the name of the DSP block <a href="#ga025e4656f44f73d8c372b8b10285f202"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga330539511a4fe2936351b34a26cf96ff">snd_hwdep_dsp_image_get_image</a> (const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the image pointer of the DSP block <a href="#ga330539511a4fe2936351b34a26cf96ff"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gaf6087e4530245055c8cceaa74df629aa">snd_hwdep_dsp_image_get_length</a> (const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">get the length of the DSP block <a href="#gaf6087e4530245055c8cceaa74df629aa"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga6e93c88a4595ac0915211dca5f46ab72">snd_hwdep_dsp_image_set_index</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj, unsigned int _index)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set the DSP block index <a href="#ga6e93c88a4595ac0915211dca5f46ab72"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#gab6529c1bf1aba5bf2abdbbf157a4e9e0">snd_hwdep_dsp_image_set_name</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj, const char *name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set the name of the DSP block <a href="#gab6529c1bf1aba5bf2abdbbf157a4e9e0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga3da9921e2aab7ab9ed91a39c4f3f6a0f">snd_hwdep_dsp_image_set_image</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj, void *buffer)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set the DSP block image pointer <a href="#ga3da9921e2aab7ab9ed91a39c4f3f6a0f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___hw_dep.html#ga6de5750e29632c68af2648dcb11a1429">snd_hwdep_dsp_image_set_length</a> (<a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> *obj, size_t length)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">set the DSP block length <a href="#ga6de5750e29632c68af2648dcb11a1429"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>The Hardware Dependant Interface. </p>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="gadbdb136d096a033b5a37da051334c311"></a><!-- doxytag: member="hwdep.h::SND_HWDEP_DLSYM_VERSION" ref="gadbdb136d096a033b5a37da051334c311" args="" -->
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<td class="memname">#define SND_HWDEP_DLSYM_VERSION _dlsym_hwdep_001</td>
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</div>
<div class="memdoc">
<p>dlsym version for interface entry callback </p>
</div>
</div>
<a class="anchor" id="ga228ee5cb7404cabc425d8aa135287475"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_alloca" ref="ga228ee5cb7404cabc425d8aa135287475" args="(ptr)" -->
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<td class="memname">#define snd_hwdep_dsp_image_alloca</td>
<td>(</td>
<td class="paramtype">ptr </td>
<td class="paramname"></td>
<td> ) </td>
<td> __snd_alloca(ptr, snd_hwdep_dsp_image)</td>
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</table>
</div>
<div class="memdoc">
<p>allocate <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> container on stack </p>
</div>
</div>
<a class="anchor" id="gaa8ff5094038689503524a6c38e7064cd"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_alloca" ref="gaa8ff5094038689503524a6c38e7064cd" args="(ptr)" -->
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<td class="memname">#define snd_hwdep_dsp_status_alloca</td>
<td>(</td>
<td class="paramtype">ptr </td>
<td class="paramname"></td>
<td> ) </td>
<td> __snd_alloca(ptr, snd_hwdep_dsp_status)</td>
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</table>
</div>
<div class="memdoc">
<p>allocate <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> container on stack </p>
</div>
</div>
<a class="anchor" id="ga209969eb18c5461a5cf2ce331c8d0898"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_alloca" ref="ga209969eb18c5461a5cf2ce331c8d0898" args="(ptr)" -->
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<td class="memname">#define snd_hwdep_info_alloca</td>
<td>(</td>
<td class="paramtype">ptr </td>
<td class="paramname"></td>
<td> ) </td>
<td> __snd_alloca(ptr, snd_hwdep_info)</td>
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</table>
</div>
<div class="memdoc">
<p>allocate <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> container on stack </p>
</div>
</div>
<a class="anchor" id="ga65dd0ca8c1810b8e9c7f9d95a09d444f"></a><!-- doxytag: member="hwdep.h::SND_HWDEP_OPEN_DUPLEX" ref="ga65dd0ca8c1810b8e9c7f9d95a09d444f" args="" -->
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<td class="memname">#define SND_HWDEP_OPEN_DUPLEX (O_RDWR)</td>
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<div class="memdoc">
<p>open for reading and writing </p>
</div>
</div>
<a class="anchor" id="gaf29d78d2741d1b7dc2647cd2e6525a10"></a><!-- doxytag: member="hwdep.h::SND_HWDEP_OPEN_NONBLOCK" ref="gaf29d78d2741d1b7dc2647cd2e6525a10" args="" -->
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<td class="memname">#define SND_HWDEP_OPEN_NONBLOCK (O_NONBLOCK)</td>
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<div class="memdoc">
<p>open mode flag: open in nonblock mode </p>
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</div>
<a class="anchor" id="ga0c719693523de2875822c7c488aa46af"></a><!-- doxytag: member="hwdep.h::SND_HWDEP_OPEN_READ" ref="ga0c719693523de2875822c7c488aa46af" args="" -->
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<td class="memname">#define SND_HWDEP_OPEN_READ (O_RDONLY)</td>
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</div>
<div class="memdoc">
<p>open for reading </p>
</div>
</div>
<a class="anchor" id="ga256f488476a56156609160ce2a8ff4fb"></a><!-- doxytag: member="hwdep.h::SND_HWDEP_OPEN_WRITE" ref="ga256f488476a56156609160ce2a8ff4fb" args="" -->
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<td class="memname">#define SND_HWDEP_OPEN_WRITE (O_WRONLY)</td>
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<div class="memdoc">
<p>open for writing </p>
</div>
</div>
<hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="ga041c777902d3888a5b000ccd305f32ce"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_t" ref="ga041c777902d3888a5b000ccd305f32ce" args="" -->
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<td class="memname">typedef struct _snd_hwdep_dsp_image <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a></td>
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</table>
</div>
<div class="memdoc">
<p>HwDep DSP image container </p>
</div>
</div>
<a class="anchor" id="ga904ac34d4d2af6c080aa01d9d70f6ef2"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_t" ref="ga904ac34d4d2af6c080aa01d9d70f6ef2" args="" -->
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<td class="memname">typedef struct _snd_hwdep_dsp_status <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a></td>
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</table>
</div>
<div class="memdoc">
<p>HwDep DSP status container </p>
</div>
</div>
<a class="anchor" id="ga12be97323a913a065524c01fb163cb29"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_t" ref="ga12be97323a913a065524c01fb163cb29" args="" -->
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<td class="memname">typedef struct _snd_hwdep_info <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a></td>
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</table>
</div>
<div class="memdoc">
<p>HwDep information container </p>
</div>
</div>
<a class="anchor" id="ga1f13b151f43d06b257c71570010b2ed0"></a><!-- doxytag: member="hwdep.h::snd_hwdep_t" ref="ga1f13b151f43d06b257c71570010b2ed0" args="" -->
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<td class="memname">typedef struct _snd_hwdep <a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a></td>
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<div class="memdoc">
<p>HwDep handle </p>
</div>
</div>
<hr/><h2>Enumeration Type Documentation</h2>
<a class="anchor" id="ga288eb9342aaea8317a7bfa03b22feaca"></a><!-- doxytag: member="hwdep.h::snd_hwdep_iface_t" ref="ga288eb9342aaea8317a7bfa03b22feaca" args="" -->
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<td class="memname">enum <a class="el" href="group___hw_dep.html#ga288eb9342aaea8317a7bfa03b22feaca">snd_hwdep_iface_t</a></td>
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<div class="memdoc">
<p>HwDep interface </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa06892f4442380329139dfd755454b3d1"></a><!-- doxytag: member="SND_HWDEP_IFACE_OPL2" ref="gga288eb9342aaea8317a7bfa03b22feacaa06892f4442380329139dfd755454b3d1" args="" -->SND_HWDEP_IFACE_OPL2</em> </td><td>
<p>OPL2 raw driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa952e48f4f4fc5fb7f2472c5d0c679b36"></a><!-- doxytag: member="SND_HWDEP_IFACE_OPL3" ref="gga288eb9342aaea8317a7bfa03b22feacaa952e48f4f4fc5fb7f2472c5d0c679b36" args="" -->SND_HWDEP_IFACE_OPL3</em> </td><td>
<p>OPL3 raw driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa122462f3f79578ac7408b476313ffa72"></a><!-- doxytag: member="SND_HWDEP_IFACE_OPL4" ref="gga288eb9342aaea8317a7bfa03b22feacaa122462f3f79578ac7408b476313ffa72" args="" -->SND_HWDEP_IFACE_OPL4</em> </td><td>
<p>OPL4 raw driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa1043d86e7c1b34d3b844892674406aa4"></a><!-- doxytag: member="SND_HWDEP_IFACE_SB16CSP" ref="gga288eb9342aaea8317a7bfa03b22feacaa1043d86e7c1b34d3b844892674406aa4" args="" -->SND_HWDEP_IFACE_SB16CSP</em> </td><td>
<p>SB16CSP driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa805de2b442f7da96cea9d3864df67f14"></a><!-- doxytag: member="SND_HWDEP_IFACE_EMU10K1" ref="gga288eb9342aaea8317a7bfa03b22feacaa805de2b442f7da96cea9d3864df67f14" args="" -->SND_HWDEP_IFACE_EMU10K1</em> </td><td>
<p>EMU10K1 driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa469940712513383aeb94e239e3388efb"></a><!-- doxytag: member="SND_HWDEP_IFACE_YSS225" ref="gga288eb9342aaea8317a7bfa03b22feacaa469940712513383aeb94e239e3388efb" args="" -->SND_HWDEP_IFACE_YSS225</em> </td><td>
<p>YSS225 driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaafcd56e8aff83d4be3a9708f7d9f74204"></a><!-- doxytag: member="SND_HWDEP_IFACE_ICS2115" ref="gga288eb9342aaea8317a7bfa03b22feacaafcd56e8aff83d4be3a9708f7d9f74204" args="" -->SND_HWDEP_IFACE_ICS2115</em> </td><td>
<p>ICS2115 driver </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaad85f235cbfcb8ba4300d3ef6252ea62c"></a><!-- doxytag: member="SND_HWDEP_IFACE_SSCAPE" ref="gga288eb9342aaea8317a7bfa03b22feacaad85f235cbfcb8ba4300d3ef6252ea62c" args="" -->SND_HWDEP_IFACE_SSCAPE</em> </td><td>
<p>Ensoniq SoundScape ISA card (MC68EC000) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa4a96dcd5734fe382cbfe8545522fa7e8"></a><!-- doxytag: member="SND_HWDEP_IFACE_VX" ref="gga288eb9342aaea8317a7bfa03b22feacaa4a96dcd5734fe382cbfe8545522fa7e8" args="" -->SND_HWDEP_IFACE_VX</em> </td><td>
<p>Digigram VX cards </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa47cfeee8ec9532f213b2151c9f411990"></a><!-- doxytag: member="SND_HWDEP_IFACE_MIXART" ref="gga288eb9342aaea8317a7bfa03b22feacaa47cfeee8ec9532f213b2151c9f411990" args="" -->SND_HWDEP_IFACE_MIXART</em> </td><td>
<p>Digigram miXart cards </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaae7f996ad6c0601e558353404e32c4366"></a><!-- doxytag: member="SND_HWDEP_IFACE_USX2Y" ref="gga288eb9342aaea8317a7bfa03b22feacaae7f996ad6c0601e558353404e32c4366" args="" -->SND_HWDEP_IFACE_USX2Y</em> </td><td>
<p>Tascam US122, US224 & US428 usb </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa01f290961f48f4981d91b158f517000f"></a><!-- doxytag: member="SND_HWDEP_IFACE_EMUX_WAVETABLE" ref="gga288eb9342aaea8317a7bfa03b22feacaa01f290961f48f4981d91b158f517000f" args="" -->SND_HWDEP_IFACE_EMUX_WAVETABLE</em> </td><td>
<p>EmuX wavetable </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaaa644270f5423d396c973f32c82d489bf"></a><!-- doxytag: member="SND_HWDEP_IFACE_BLUETOOTH" ref="gga288eb9342aaea8317a7bfa03b22feacaaa644270f5423d396c973f32c82d489bf" args="" -->SND_HWDEP_IFACE_BLUETOOTH</em> </td><td>
<p>Bluetooth audio </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa72513cceee36da63f12514742d491a29"></a><!-- doxytag: member="SND_HWDEP_IFACE_USX2Y_PCM" ref="gga288eb9342aaea8317a7bfa03b22feacaa72513cceee36da63f12514742d491a29" args="" -->SND_HWDEP_IFACE_USX2Y_PCM</em> </td><td>
<p>Tascam US122, US224 & US428 raw USB PCM </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa1871ee51a3434c7cf0e1afdff93c5775"></a><!-- doxytag: member="SND_HWDEP_IFACE_PCXHR" ref="gga288eb9342aaea8317a7bfa03b22feacaa1871ee51a3434c7cf0e1afdff93c5775" args="" -->SND_HWDEP_IFACE_PCXHR</em> </td><td>
<p>Digigram PCXHR </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa517dcdf103a96fab2aad10e8df123afc"></a><!-- doxytag: member="SND_HWDEP_IFACE_SB_RC" ref="gga288eb9342aaea8317a7bfa03b22feacaa517dcdf103a96fab2aad10e8df123afc" args="" -->SND_HWDEP_IFACE_SB_RC</em> </td><td>
<p>SB Extigy/Audigy2NX remote control </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga288eb9342aaea8317a7bfa03b22feacaa08d49aeea9f376daf523a8f7b2825744"></a><!-- doxytag: member="SND_HWDEP_IFACE_LAST" ref="gga288eb9342aaea8317a7bfa03b22feacaa08d49aeea9f376daf523a8f7b2825744" args="" -->SND_HWDEP_IFACE_LAST</em> </td><td>
<p>last known hwdep interface </p>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga839de1d3a2bf9495cc631c08099bca79"></a><!-- doxytag: member="hwdep.h::snd_hwdep_type_t" ref="ga839de1d3a2bf9495cc631c08099bca79" args="" -->
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<td class="memname">enum <a class="el" href="group___hw_dep.html#ga839de1d3a2bf9495cc631c08099bca79">snd_hwdep_type_t</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>HwDep handle type </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="gga839de1d3a2bf9495cc631c08099bca79a177e7de0de2e799ff985de775ebee841"></a><!-- doxytag: member="SND_HWDEP_TYPE_HW" ref="gga839de1d3a2bf9495cc631c08099bca79a177e7de0de2e799ff985de775ebee841" args="" -->SND_HWDEP_TYPE_HW</em> </td><td>
<p>Kernel level HwDep </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga839de1d3a2bf9495cc631c08099bca79a59cee94d2b24ab7d23be97cb88705e64"></a><!-- doxytag: member="SND_HWDEP_TYPE_SHM" ref="gga839de1d3a2bf9495cc631c08099bca79a59cee94d2b24ab7d23be97cb88705e64" args="" -->SND_HWDEP_TYPE_SHM</em> </td><td>
<p>Shared memory client HwDep (not yet implemented) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga839de1d3a2bf9495cc631c08099bca79ae9843ef92e5b944c9b0623389a38fe29"></a><!-- doxytag: member="SND_HWDEP_TYPE_INET" ref="gga839de1d3a2bf9495cc631c08099bca79ae9843ef92e5b944c9b0623389a38fe29" args="" -->SND_HWDEP_TYPE_INET</em> </td><td>
<p>INET client HwDep (not yet implemented) </p>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ga35ba1e894c069b37012604abf1432314"></a><!-- doxytag: member="hwdep.h::snd_hwdep_close" ref="ga35ba1e894c069b37012604abf1432314" args="(snd_hwdep_t *hwdep)" -->
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<td class="memname">int snd_hwdep_close </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>close HwDep handle </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code</dd></dl>
<p>Closes the specified HwDep handle and frees all associated resources. </p>
</div>
</div>
<a class="anchor" id="ga4178c718645804dffde98bf210e447b5"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_copy" ref="ga4178c718645804dffde98bf210e447b5" args="(snd_hwdep_dsp_image_t *dst, const snd_hwdep_dsp_image_t *src)" -->
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<td class="memname">void snd_hwdep_dsp_image_copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>dst</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>src</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>copy one snd_hwdep_dsp_image_t structure to another </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dst</em> </td><td>destination snd_hwdep_dsp_image_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>src</em> </td><td>source snd_hwdep_dsp_image_t structure </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga95c9c00e3b9b20ba6a92ac9d14c5cfdd"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_free" ref="ga95c9c00e3b9b20ba6a92ac9d14c5cfdd" args="(snd_hwdep_dsp_image_t *obj)" -->
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<td class="memname">void snd_hwdep_dsp_image_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>frees the snd_hwdep_dsp_image_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to the snd_hwdep_dsp_image_t structure to free</td></tr>
</table>
</dd>
</dl>
<p>Frees the given snd_hwdep_dsp_image_t structure using the standard free C library function. </p>
</div>
</div>
<a class="anchor" id="ga330539511a4fe2936351b34a26cf96ff"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_get_image" ref="ga330539511a4fe2936351b34a26cf96ff" args="(const snd_hwdep_dsp_image_t *obj)" -->
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<td class="memname">const void* snd_hwdep_dsp_image_get_image </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the image pointer of the DSP block </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the image pointer of the DSP block </dd></dl>
</div>
</div>
<a class="anchor" id="gada5fa0eaa5a4a941dc5b79ae1897db76"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_get_index" ref="gada5fa0eaa5a4a941dc5b79ae1897db76" args="(const snd_hwdep_dsp_image_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_dsp_image_get_index </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<p>get the DSP block index </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the index of the DSP block </dd></dl>
</div>
</div>
<a class="anchor" id="gaf6087e4530245055c8cceaa74df629aa"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_get_length" ref="gaf6087e4530245055c8cceaa74df629aa" args="(const snd_hwdep_dsp_image_t *obj)" -->
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<td class="memname">size_t snd_hwdep_dsp_image_get_length </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<p>get the length of the DSP block </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the length of the DSP block in bytes </dd></dl>
</div>
</div>
<a class="anchor" id="ga025e4656f44f73d8c372b8b10285f202"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_get_name" ref="ga025e4656f44f73d8c372b8b10285f202" args="(const snd_hwdep_dsp_image_t *obj)" -->
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<td class="memname">const char* snd_hwdep_dsp_image_get_name </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<p>get the name of the DSP block </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the name string of the DSP block </dd></dl>
</div>
</div>
<a class="anchor" id="gacf44ffc69400d7d195809c18cb71f89d"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_malloc" ref="gacf44ffc69400d7d195809c18cb71f89d" args="(snd_hwdep_dsp_image_t **ptr)" -->
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<td class="memname">int snd_hwdep_dsp_image_malloc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> ** </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
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<p>allocate a new snd_hwdep_dsp_image_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>returned pointer </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code if fails</dd></dl>
<p>Allocates a new snd_hwdep_dsp_image_t structure using the standard malloc C library function. </p>
</div>
</div>
<a class="anchor" id="ga3da9921e2aab7ab9ed91a39c4f3f6a0f"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_set_image" ref="ga3da9921e2aab7ab9ed91a39c4f3f6a0f" args="(snd_hwdep_dsp_image_t *obj, void *buffer)" -->
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<td class="memname">void snd_hwdep_dsp_image_set_image </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"> <em>image</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<div class="memdoc">
<p>set the DSP block image pointer </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>image</em> </td><td>the DSP image pointer </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga6e93c88a4595ac0915211dca5f46ab72"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_set_index" ref="ga6e93c88a4595ac0915211dca5f46ab72" args="(snd_hwdep_dsp_image_t *obj, unsigned int _index)" -->
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<td class="memname">void snd_hwdep_dsp_image_set_index </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>index</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>set the DSP block index </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>index</em> </td><td>the index value to set </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga6de5750e29632c68af2648dcb11a1429"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_set_length" ref="ga6de5750e29632c68af2648dcb11a1429" args="(snd_hwdep_dsp_image_t *obj, size_t length)" -->
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<div class="memproto">
<table class="memname">
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<td class="memname">void snd_hwdep_dsp_image_set_length </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>length</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>set the DSP block length </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>length</em> </td><td>the length of the DSP block </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gab6529c1bf1aba5bf2abdbbf157a4e9e0"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_set_name" ref="gab6529c1bf1aba5bf2abdbbf157a4e9e0" args="(snd_hwdep_dsp_image_t *obj, const char *name)" -->
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<td class="memname">void snd_hwdep_dsp_image_set_name </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>obj</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>name</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>set the name of the DSP block </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>the name string </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga8a5e773b145d973ea5c75057974a371d"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_image_sizeof" ref="ga8a5e773b145d973ea5c75057974a371d" args="(void)" -->
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<div class="memproto">
<table class="memname">
<tr>
<td class="memname">size_t snd_hwdep_dsp_image_sizeof </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get size of the snd_hwdep_dsp_image_t structure in bytes </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>size of the snd_hwdep_dsp_image_t structure in bytes </dd></dl>
</div>
</div>
<a class="anchor" id="ga7316c8ce8d4ba06b58e6536e3cf96223"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_load" ref="ga7316c8ce8d4ba06b58e6536e3cf96223" args="(snd_hwdep_t *hwdep, snd_hwdep_dsp_image_t *block)" -->
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<td class="memname">int snd_hwdep_dsp_load </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga041c777902d3888a5b000ccd305f32ce">snd_hwdep_dsp_image_t</a> * </td>
<td class="paramname"> <em>block</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>load the DSP block </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>block</em> </td><td>pointer to a snd_hwdep_dsp_image_t structure to transfer </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="gaf071b6171019a11a72367cc7f9613f5d"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status" ref="gaf071b6171019a11a72367cc7f9613f5d" args="(snd_hwdep_t *hwdep, snd_hwdep_dsp_status_t *status)" -->
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<div class="memproto">
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<td class="memname">int snd_hwdep_dsp_status </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>info</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the DSP status information </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure to be filled </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="gacc06c08ac09beec6b50fddf5496ce25b"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_copy" ref="gacc06c08ac09beec6b50fddf5496ce25b" args="(snd_hwdep_dsp_status_t *dst, const snd_hwdep_dsp_status_t *src)" -->
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<td class="memname">void snd_hwdep_dsp_status_copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>dst</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>src</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>copy one snd_hwdep_dsp_status_t structure to another </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dst</em> </td><td>destination snd_hwdep_dsp_status_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>src</em> </td><td>source snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaa7d3a0f8f01805b10342581893e9671e"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_free" ref="gaa7d3a0f8f01805b10342581893e9671e" args="(snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">void snd_hwdep_dsp_status_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>frees the snd_hwdep_dsp_status_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to the snd_hwdep_dsp_status_t structure to free</td></tr>
</table>
</dd>
</dl>
<p>Frees the given snd_hwdep_dsp_status_t structure using the standard free C library function. </p>
</div>
</div>
<a class="anchor" id="gaf49d8044583b6f0c890bbb6a493734e8"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_get_chip_ready" ref="gaf49d8044583b6f0c890bbb6a493734e8" args="(const snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_dsp_status_get_chip_ready </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the chip status of dsp loader </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>non-zero if all DSP blocks are loaded and the chip is ready </dd></dl>
</div>
</div>
<a class="anchor" id="ga6c5e57aaf95a248814897bd80e12edf4"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_get_dsp_loaded" ref="ga6c5e57aaf95a248814897bd80e12edf4" args="(const snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_dsp_status_get_dsp_loaded </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the bit flags of the loaded dsp blocks </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the big flags of the loaded dsp blocks </dd></dl>
</div>
</div>
<a class="anchor" id="ga3f62477a689ef9e84048f7ba8e33a792"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_get_id" ref="ga3f62477a689ef9e84048f7ba8e33a792" args="(const snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">const char* snd_hwdep_dsp_status_get_id </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the driver id of dsp loader </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the driver id string </dd></dl>
</div>
</div>
<a class="anchor" id="gac49bce861455b700ba79c3eb9f73aae9"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_get_num_dsps" ref="gac49bce861455b700ba79c3eb9f73aae9" args="(const snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_dsp_status_get_num_dsps </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get number of dsp blocks </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>number of dsp blocks </dd></dl>
</div>
</div>
<a class="anchor" id="ga52f6b403c2a4947c647043fdd7c5dbf7"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_get_version" ref="ga52f6b403c2a4947c647043fdd7c5dbf7" args="(const snd_hwdep_dsp_status_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_dsp_status_get_version </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get the driver version of dsp loader </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_dsp_status_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the driver version </dd></dl>
</div>
</div>
<a class="anchor" id="ga444c5bd71b0a3756084450dfb7528c6d"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_malloc" ref="ga444c5bd71b0a3756084450dfb7528c6d" args="(snd_hwdep_dsp_status_t **ptr)" -->
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<td class="memname">int snd_hwdep_dsp_status_malloc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga904ac34d4d2af6c080aa01d9d70f6ef2">snd_hwdep_dsp_status_t</a> ** </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>allocate a new snd_hwdep_dsp_status_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>returned pointer </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code if fails</dd></dl>
<p>Allocates a new snd_hwdep_dsp_status_t structure using the standard malloc C library function. </p>
</div>
</div>
<a class="anchor" id="ga54205faff69bdd35b996863094bafada"></a><!-- doxytag: member="hwdep.h::snd_hwdep_dsp_status_sizeof" ref="ga54205faff69bdd35b996863094bafada" args="(void)" -->
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<td class="memname">size_t snd_hwdep_dsp_status_sizeof </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get size of the snd_hwdep_dsp_status_t structure in bytes </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>size of the snd_hwdep_dsp_status_t structure in bytes </dd></dl>
</div>
</div>
<a class="anchor" id="ga97f208875f4ec6a253f088e3c2c084c1"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info" ref="ga97f208875f4ec6a253f088e3c2c084c1" args="(snd_hwdep_t *hwdep, snd_hwdep_info_t *info)" -->
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<td class="memname">int snd_hwdep_info </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>info</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get information about HwDep handle </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to a snd_hwdep_info_t structure to be filled </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ga3132936fc99968e59df02711d2927018"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_copy" ref="ga3132936fc99968e59df02711d2927018" args="(snd_hwdep_info_t *dst, const snd_hwdep_info_t *src)" -->
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<td class="memname">void snd_hwdep_info_copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>dst</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>src</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>copy one snd_hwdep_info_t structure to another </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dst</em> </td><td>destination snd_hwdep_info_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>src</em> </td><td>source snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga9e19ef5118f808962689c3d947af1a00"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_free" ref="ga9e19ef5118f808962689c3d947af1a00" args="(snd_hwdep_info_t *obj)" -->
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<td class="memname">void snd_hwdep_info_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>frees the snd_hwdep_info_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to the snd_hwdep_info_t structure to free</td></tr>
</table>
</dd>
</dl>
<p>Frees the given snd_hwdep_info_t structure using the standard free C library function. </p>
</div>
</div>
<a class="anchor" id="ga04193d4395908c0e31ac826ac05d3824"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_get_card" ref="ga04193d4395908c0e31ac826ac05d3824" args="(const snd_hwdep_info_t *obj)" -->
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<td class="memname">int snd_hwdep_info_get_card </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<div class="memdoc">
<p>get hwdep card number </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>hwdep card number </dd></dl>
</div>
</div>
<a class="anchor" id="ga23deebecc5e88b0124222ebf73999c24"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_get_device" ref="ga23deebecc5e88b0124222ebf73999c24" args="(const snd_hwdep_info_t *obj)" -->
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<td class="memname">unsigned int snd_hwdep_info_get_device </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get hwdep device number </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>hwdep device number </dd></dl>
</div>
</div>
<a class="anchor" id="ga80bb1ca217fa051086e7f2ab5821ee34"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_get_id" ref="ga80bb1ca217fa051086e7f2ab5821ee34" args="(const snd_hwdep_info_t *obj)" -->
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<td class="memname">const char* snd_hwdep_info_get_id </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<div class="memdoc">
<p>get hwdep driver identifier </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>hwdep driver identifier </dd></dl>
</div>
</div>
<a class="anchor" id="ga7d846bea699c0917f54d75fe5d76a58e"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_get_iface" ref="ga7d846bea699c0917f54d75fe5d76a58e" args="(const snd_hwdep_info_t *obj)" -->
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<td class="memname"><a class="el" href="group___hw_dep.html#ga288eb9342aaea8317a7bfa03b22feaca">snd_hwdep_iface_t</a> snd_hwdep_info_get_iface </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get hwdep protocol interface </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>hwdep protocol interface </dd></dl>
</div>
</div>
<a class="anchor" id="gaf7f6251acc0f26d6fefc2c28fcf90c6a"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_get_name" ref="gaf7f6251acc0f26d6fefc2c28fcf90c6a" args="(const snd_hwdep_info_t *obj)" -->
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<td class="memname">const char* snd_hwdep_info_get_name </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>obj</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>get hwdep driver name </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>hwdep driver name </dd></dl>
</div>
</div>
<a class="anchor" id="gab6831cd666bea427ab3779710e90a857"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_malloc" ref="gab6831cd666bea427ab3779710e90a857" args="(snd_hwdep_info_t **ptr)" -->
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<td class="memname">int snd_hwdep_info_malloc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> ** </td>
<td class="paramname"> <em>info</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>allocate a new snd_hwdep_info_t structure </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>info</em> </td><td>returned pointer </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code if fails</dd></dl>
<p>Allocates a new snd_hwdep_info_t structure using the standard malloc C library function. </p>
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<a class="anchor" id="ga5f497ef1c3a675af203923d93eda4202"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_set_device" ref="ga5f497ef1c3a675af203923d93eda4202" args="(snd_hwdep_info_t *obj, unsigned int val)" -->
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<td class="memname">void snd_hwdep_info_set_device </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga12be97323a913a065524c01fb163cb29">snd_hwdep_info_t</a> * </td>
<td class="paramname"> <em>obj</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>val</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>set hwdep device number </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>obj</em> </td><td>pointer to a snd_hwdep_info_t structure </td></tr>
<tr><td valign="top"></td><td valign="top"><em>val</em> </td><td>hwdep device </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gad39906514d5d04b7ebcc190382b8bd27"></a><!-- doxytag: member="hwdep.h::snd_hwdep_info_sizeof" ref="gad39906514d5d04b7ebcc190382b8bd27" args="(void)" -->
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<td class="memname">size_t snd_hwdep_info_sizeof </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<p>get size of the snd_hwdep_info_t structure in bytes </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>size of the snd_hwdep_info_t structure in bytes </dd></dl>
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</div>
<a class="anchor" id="ga74f5260b0f5f779932bfe7afcf68ecb1"></a><!-- doxytag: member="hwdep.h::snd_hwdep_ioctl" ref="ga74f5260b0f5f779932bfe7afcf68ecb1" args="(snd_hwdep_t *hwdep, unsigned int request, void *arg)" -->
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<td class="memname">int snd_hwdep_ioctl </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>request</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"> <em>arg</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>do hardware dependent ioctl </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>request</em> </td><td>ioctl command </td></tr>
<tr><td valign="top"></td><td valign="top"><em>arg</em> </td><td>ioctl argument </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ga6eaa5f13367625587fdd955fb4cb4c51"></a><!-- doxytag: member="hwdep.h::snd_hwdep_nonblock" ref="ga6eaa5f13367625587fdd955fb4cb4c51" args="(snd_hwdep_t *hwdep, int nonblock)" -->
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<td class="memname">int snd_hwdep_nonblock </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nonblock</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<div class="memdoc">
<p>set nonblock mode </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>nonblock</em> </td><td>0 = block, 1 = nonblock mode </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="gaade8a9030fadb398fdb6d139f360f07e"></a><!-- doxytag: member="hwdep.h::snd_hwdep_open" ref="gaade8a9030fadb398fdb6d139f360f07e" args="(snd_hwdep_t **hwdep, const char *name, int mode)" -->
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<td class="memname">int snd_hwdep_open </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> ** </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>mode</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>Opens a new connection to the HwDep interface. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>Returned handle (NULL if not wanted) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>ASCII identifier of the HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>mode</em> </td><td>Open mode </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code</dd></dl>
<p>Opens a new connection to the HwDep interface specified with an ASCII identifier and mode. </p>
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</div>
<a class="anchor" id="ga179b89384deb4c5a76b7017e6ba6af88"></a><!-- doxytag: member="hwdep.h::snd_hwdep_poll_descriptors" ref="ga179b89384deb4c5a76b7017e6ba6af88" args="(snd_hwdep_t *hwdep, struct pollfd *pfds, unsigned int space)" -->
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<td class="memname">int snd_hwdep_poll_descriptors </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">struct pollfd * </td>
<td class="paramname"> <em>pfds</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>space</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
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<p>get poll descriptors </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pfds</em> </td><td>array of poll descriptors </td></tr>
<tr><td valign="top"></td><td valign="top"><em>space</em> </td><td>space in the poll descriptor array </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>count of filled descriptors </dd></dl>
</div>
</div>
<a class="anchor" id="ga654b2c89f1e6bc16e590161340f1e3d9"></a><!-- doxytag: member="hwdep.h::snd_hwdep_poll_descriptors_revents" ref="ga654b2c89f1e6bc16e590161340f1e3d9" args="(snd_hwdep_t *hwdep, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)" -->
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<td class="memname">int snd_hwdep_poll_descriptors_revents </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">struct pollfd * </td>
<td class="paramname"> <em>pfds</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>nfds</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned short * </td>
<td class="paramname"> <em>revents</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>get returned events from poll descriptors </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pfds</em> </td><td>array of poll descriptors </td></tr>
<tr><td valign="top"></td><td valign="top"><em>nfds</em> </td><td>count of poll descriptors </td></tr>
<tr><td valign="top"></td><td valign="top"><em>revents</em> </td><td>returned events </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>zero if success, otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ga7ef0c6e7ae7b838d509dd09b800b321f"></a><!-- doxytag: member="hwdep.h::snd_hwdep_read" ref="ga7ef0c6e7ae7b838d509dd09b800b321f" args="(snd_hwdep_t *hwdep, void *buffer, size_t size)" -->
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<td class="memname">ssize_t snd_hwdep_read </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"> <em>buffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>read bytes using HwDep handle </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>buffer to store the input bytes </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>input buffer size in bytes </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga4c158ce0db68b8bfac1a00abe5e2ffcd"></a><!-- doxytag: member="hwdep.h::snd_hwdep_write" ref="ga4c158ce0db68b8bfac1a00abe5e2ffcd" args="(snd_hwdep_t *hwdep, const void *buffer, size_t size)" -->
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<td class="memname">ssize_t snd_hwdep_write </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___hw_dep.html#ga1f13b151f43d06b257c71570010b2ed0">snd_hwdep_t</a> * </td>
<td class="paramname"> <em>hwdep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void * </td>
<td class="paramname"> <em>buffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>size</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>write bytes using HwDep handle </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hwdep</em> </td><td>HwDep handle </td></tr>
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>buffer containing bytes to write </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>output buffer size in bytes </td></tr>
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