virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-04 22:03:09 +02:00
Code Issues Releases Activity

avcodec/ffv1: Add GRAYF16 support

Browse Source 
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2025-03-15 00:49:30 +01:00
parent b57f71f716
commit 276854e183
3 changed files with 25 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/ffv1_parse.c
View File

@ -288,6 +288,9 @@ int ff_ffv1_parse_header(FFV1Context *f, RangeCoder *c, uint8_t *state)
f->pix_fmt = AV_PIX_FMT_GRAY14;
} else if (f->avctx->bits_per_raw_sample == 16) {
f->packed_at_lsb = 1;
if (f->flt) {
f->pix_fmt = AV_PIX_FMT_GRAYF16;
} else
f->pix_fmt = AV_PIX_FMT_GRAY16;
} else if (f->avctx->bits_per_raw_sample < 16) {
f->pix_fmt = AV_PIX_FMT_GRAY16;

19
libavcodec/ffv1dec.c
View File

@ -128,10 +128,20 @@ static int decode_plane(FFV1Context *f, FFV1SliceContext *sc,
int ret = decode_line(f, sc, gb, w, sample, plane_index, f->avctx->bits_per_raw_sample, ac);
if (ret < 0)
return ret;
if (sc->remap)
for (x = 0; x < w; x++)
sample[1][x] = sc->fltmap[remap_index][sample[1][x]];
if (f->packed_at_lsb) {
if (sc->remap) {
if (f->packed_at_lsb || f->avctx->bits_per_raw_sample == 16) {
for (x = 0; x < w; x++) {
((uint16_t*)(src + stride*y))[x*pixel_stride] = sc->fltmap[remap_index][sample[1][x] & 0xFFFF];
}
} else {
for (x = 0; x < w; x++) {
int v = sc->fltmap[remap_index][sample[1][x] & 0xFFFF];
((uint16_t*)(src + stride*y))[x*pixel_stride] = v << (16 - f->avctx->bits_per_raw_sample) | v >> (2 * f->avctx->bits_per_raw_sample - 16);
}
}
} else {
if (f->packed_at_lsb || f->avctx->bits_per_raw_sample == 16) {
for (x = 0; x < w; x++) {
((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
}
@ -142,6 +152,7 @@ static int decode_plane(FFV1Context *f, FFV1SliceContext *sc,
}
}
}
}
return 0;
}

2
libavcodec/ffv1enc.c
View File

@ -839,6 +839,7 @@ av_cold int ff_ffv1_encode_setup_plane_info(AVCodecContext *avctx,
case AV_PIX_FMT_YUVA444P16:
case AV_PIX_FMT_YUVA422P16:
case AV_PIX_FMT_YUVA420P16:
case AV_PIX_FMT_GRAYF16:
case AV_PIX_FMT_YAF16:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
s->bits_per_raw_sample = 16;
@ -1539,6 +1540,7 @@ const FFCodec ff_ffv1_encoder = {
AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YAF16,
AV_PIX_FMT_GRAYF16,
AV_PIX_FMT_GBRPF16),
.color_ranges = AVCOL_RANGE_MPEG,
.p.priv_class = &ffv1_class,