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<h1><a class="anchor" id="libcaca-canvas">The libcaca canvas format (version 1) </a></h1><p>All types are big endian.</p>
<div class="fragment"><pre class="fragment"><span class="keyword">struct</span>
{
magic:
uint8_t caca_header[2]; <span class="comment">// "\xCA\xCA"</span>
uint8_t caca_file_type[2]; <span class="comment">// "CV"</span>
canvas_header:
uint32_t control_size; <span class="comment">// Control size (canvas_data - canvas_header)</span>
uint32_t data_size; <span class="comment">// Data size (EOF - canvas_data)</span>
uint16_t version; <span class="comment">// Canvas format version</span>
<span class="comment">// bit 0: set to 1 if canvas is compatible</span>
<span class="comment">// with version 1 of the format</span>
<span class="comment">// bits 1-15: unused yet, must be 0</span>
uint32_t frames; <span class="comment">// Frame count</span>
uint16_t flags; <span class="comment">// Feature flags</span>
<span class="comment">// bits 0-15: unused yet, must be 0</span>
frame_info:
<span class="keyword">struct</span>
{
uint32_t width; <span class="comment">// Frame width</span>
uint32_t height; <span class="comment">// Frame height</span>
uint32_t duration; <span class="comment">// Frame duration in milliseconds, 0 to</span>
<span class="comment">// not specify a duration</span>
uint32_t attr; <span class="comment">// Graphics context attribute</span>
int32_t cursor_x; <span class="comment">// Cursor X coordinate</span>
int32_t cursor_y; <span class="comment">// Cursor Y coordinate</span>
int32_t handle_x; <span class="comment">// Handle X coordinate</span>
int32_t handle_y; <span class="comment">// Handle Y coordinate</span>
}
frame_list[frames];
control_extension_1:
control_extension_2:
...
control_extension_N:
... <span class="comment">// reserved for future use</span>
canvas_data:
uint8_t data[data_size]; <span class="comment">// canvas data</span>
data_extension_1:
data_extension_2:
...
data_extension_N:
... <span class="comment">// reserved for future use</span>
};
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