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Use AV_PIX_FMT_FLAG_ALPHA for detecting transparency where nb_components was used 

Temporarily keep the old method for ffmpeg_filters.c choose_pix_fmt and
avfiltergraph.c pick_format() until a paletted pixel format without alpha is
introduced.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2018-04-19 23:14:24 +02:00
parent 56b081da57
commit 7033654f7f
4 changed files with 5 additions and 3 deletions
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1
fftools/ffmpeg_filter.c
View File

@ -65,6 +65,7 @@ enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCod
if (codec && codec->pix_fmts) {
const enum AVPixelFormat *p = codec->pix_fmts;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
//FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
enum AVPixelFormat best= AV_PIX_FMT_NONE;

4
libavcodec/ffv1enc.c
View File

@ -624,7 +624,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
case AV_PIX_FMT_YUVA420P:
s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
s->colorspace = 0;
s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 8;
else if (!s->bits_per_raw_sample)
@ -676,7 +676,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
s->bits_per_raw_sample = 16;
else if (!s->bits_per_raw_sample)
s->bits_per_raw_sample = avctx->bits_per_raw_sample;
s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
s->colorspace = 1;
s->chroma_planes = 1;
if (s->bits_per_raw_sample >= 16) {

1
libavfilter/avfiltergraph.c
View File

@ -679,6 +679,7 @@ static int pick_format(AVFilterLink *link, AVFilterLink *ref)
if (link->type == AVMEDIA_TYPE_VIDEO) {
if(ref && ref->type == AVMEDIA_TYPE_VIDEO){
//FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2 == 0;
enum AVPixelFormat best= AV_PIX_FMT_NONE;
int i;

2
libavutil/pixdesc.c
View File

@ -2482,7 +2482,7 @@ enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
#define FF_COLOR_XYZ 4
#define pixdesc_has_alpha(pixdesc) \
((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)
((pixdesc)->flags & AV_PIX_FMT_FLAG_ALPHA)
static int get_color_type(const AVPixFmtDescriptor *desc) {