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Code Issues Releases Activity

avcodec_get_pix_fmt_loss: remove PixFmtInfo use

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-21 17:22:25 +01:00
parent fc04c99dea
commit 6adf97fe00
1 changed files with 34 additions and 17 deletions
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51
libavcodec/imgconvert.c
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@ -433,6 +433,22 @@ void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int
*v_shift = desc->log2_chroma_h;
}
static get_color_type(AVPixFmtDescriptor *desc) {
if(desc->nb_components == 1 || desc->nb_components == 2)
return FF_COLOR_GRAY;
if(desc->name && !strncmp(desc->name, "yuvj", 4))
return FF_COLOR_YUV_JPEG;
if(desc->flags & PIX_FMT_RGB)
return FF_COLOR_RGB;
if(desc->nb_components == 0)
return 0;
return FF_COLOR_YUV;
}
static int get_pix_fmt_depth(int *min, int *max, enum AVPixelFormat pix_fmt)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
@ -454,17 +470,15 @@ static int get_pix_fmt_depth(int *min, int *max, enum AVPixelFormat pix_fmt)
int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt,
int has_alpha)
{
const PixFmtInfo *pf, *ps;
const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt);
const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt);
int src_color, dst_color;
int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
int ret, loss;
if (dst_pix_fmt >= AV_PIX_FMT_NB || dst_pix_fmt <= AV_PIX_FMT_NONE)
return ~0;
ps = &pix_fmt_info[src_pix_fmt];
/* compute loss */
loss = 0;
@ -472,6 +486,10 @@ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat
return ret;
if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
return ret;
src_color = get_color_type(src_desc);
dst_color = get_color_type(dst_desc);
if (dst_min_depth < src_min_depth ||
dst_max_depth < src_max_depth)
loss |= FF_LOSS_DEPTH;
@ -479,40 +497,39 @@ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat
dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
loss |= FF_LOSS_RESOLUTION;
pf = &pix_fmt_info[dst_pix_fmt];
switch(pf->color_type) {
switch(dst_color) {
case FF_COLOR_RGB:
if (ps->color_type != FF_COLOR_RGB &&
ps->color_type != FF_COLOR_GRAY)
if (src_color != FF_COLOR_RGB &&
src_color != FF_COLOR_GRAY)
loss |= FF_LOSS_COLORSPACE;
break;
case FF_COLOR_GRAY:
if (ps->color_type != FF_COLOR_GRAY)
if (src_color != FF_COLOR_GRAY)
loss |= FF_LOSS_COLORSPACE;
break;
case FF_COLOR_YUV:
if (ps->color_type != FF_COLOR_YUV)
if (src_color != FF_COLOR_YUV)
loss |= FF_LOSS_COLORSPACE;
break;
case FF_COLOR_YUV_JPEG:
if (ps->color_type != FF_COLOR_YUV_JPEG &&
ps->color_type != FF_COLOR_YUV &&
ps->color_type != FF_COLOR_GRAY)
if (src_color != FF_COLOR_YUV_JPEG &&
src_color != FF_COLOR_YUV &&
src_color != FF_COLOR_GRAY)
loss |= FF_LOSS_COLORSPACE;
break;
default:
/* fail safe test */
if (ps->color_type != pf->color_type)
if (src_color != dst_color)
loss |= FF_LOSS_COLORSPACE;
break;
}
if (pf->color_type == FF_COLOR_GRAY &&
ps->color_type != FF_COLOR_GRAY)
if (dst_color == FF_COLOR_GRAY &&
src_color != FF_COLOR_GRAY)
loss |= FF_LOSS_CHROMA;
if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && has_alpha))
loss |= FF_LOSS_ALPHA;
if (dst_pix_fmt == AV_PIX_FMT_PAL8 &&
(src_pix_fmt != AV_PIX_FMT_PAL8 && (ps->color_type != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && has_alpha))))
(src_pix_fmt != AV_PIX_FMT_PAL8 && (src_color != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && has_alpha))))
loss |= FF_LOSS_COLORQUANT;
return loss;
@ -986,7 +1003,7 @@ int main(void){
AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
if(!desc)
continue;
av_log(0, AV_LOG_INFO, "pix fmt %s yuv_plan:%d avg_bpp:%d colortype:%d\n", desc->name, is_yuv_planar(i), avg_bits_per_pixel(i), pix_fmt_info[i].color_type);
av_log(0, AV_LOG_INFO, "pix fmt %s yuv_plan:%d avg_bpp:%d colortype:%d\n", desc->name, is_yuv_planar(i), avg_bits_per_pixel(i), get_color_type(desc));
}
return 0;
}