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Support decoding rgba64 with libopenjpeg.

This commit is contained in:
Michael Bradshaw 2012-02-01 15:51:18 +01:00 committed by Carl Eugen Hoyos
parent ec0d02e441
commit d76864d9ce
1 changed files with 16 additions and 12 deletions
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28
libavcodec/libopenjpegdec.c
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@ -50,6 +50,19 @@ static enum PixelFormat check_image_attributes(AVCodecContext *avctx, opj_image_
compRatio |= c1.dx << 9 | c1.dy << 6;
compRatio |= c2.dx << 3 | c2.dy;
if (image->numcomps == 4) {
if (c0.prec == 8) {
if (compRatio == 0112222 &&
image->comps[3].dx == 1 && image->comps[3].dy == 1) {
return PIX_FMT_YUVA420P;
} else {
return PIX_FMT_RGBA;
}
} else {
return PIX_FMT_RGBA64;
}
}
switch (compRatio) {
case 0111111: goto libopenjpeg_yuv444_rgb;
case 0111212: return PIX_FMT_YUV440P;
@ -91,15 +104,6 @@ libopenjpeg_rgb:
return PIX_FMT_RGB24;
}
static int is_yuva420(opj_image_t *image)
{
return image->numcomps == 4 &&
image->comps[0].dx == 1 && image->comps[0].dy == 1 &&
image->comps[1].dx == 2 && image->comps[1].dy == 2 &&
image->comps[2].dx == 2 && image->comps[2].dy == 2 &&
image->comps[3].dx == 1 && image->comps[3].dy == 1;
}
static inline int libopenjpeg_ispacked(enum PixelFormat pix_fmt) {
int i, component_plane;
component_plane = av_pix_fmt_descriptors[pix_fmt].comp[0].plane;
@ -262,9 +266,8 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
break;
case 2: avctx->pix_fmt = PIX_FMT_GRAY8A;
break;
case 3: avctx->pix_fmt = check_image_attributes(avctx, image);
break;
case 4: avctx->pix_fmt = is_yuva420(image) ? PIX_FMT_YUVA420P : PIX_FMT_RGBA;
case 3:
case 4: avctx->pix_fmt = check_image_attributes(avctx, image);
break;
default: av_log(avctx, AV_LOG_ERROR, "%d components unsupported.\n", image->numcomps);
goto done;
@ -318,6 +321,7 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
}
break;
case 6:
case 8:
if (ispacked) {
libopenjpeg_copy_to_packed16(picture, image);
}