};
/**
- * Pixel format.
+ * Pixel format. Notes:
+ *
+ * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
+ * color is put together as:
+ * (A << 24) | (R << 16) | (G << 8) | B
+ * This is stored as BGRA on little endian CPU architectures and ARGB on
+ * big endian CPUs.
+ *
+ * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
+ * image data is stored in AVFrame.data[0]. The palette is transported in
+ * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
+ * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
+ * also endian-specific).
*/
enum PixelFormat {
PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
- PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA...
+ PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
PIX_FMT_RGB565, ///< always stored in cpu endianness
switch (s->avctx->pix_fmt) {
- case PIX_FMT_PAL8:
- for (i = 0; i < PALETTE_COUNT; i++) {
- r = *palette_data++;
- g = *palette_data++;
- b = *palette_data++;
- s->palette[i * 4 + 0] = b;
- s->palette[i * 4 + 1] = g;
- s->palette[i * 4 + 2] = r;
- }
- break;
-
case PIX_FMT_RGB555:
palette16 = (unsigned short *)s->palette;
for (i = 0; i < PALETTE_COUNT; i++) {
}
break;
+ case PIX_FMT_PAL8:
case PIX_FMT_RGBA32:
palette32 = (unsigned int *)s->palette;
for (i = 0; i < PALETTE_COUNT; i++) {