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Code Issues Releases Activity

avcodec/ffv1dec: Support AV_PIX_FMT_YA8

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2016-01-01 01:16:34 +01:00
parent 7ea2db6eaf
commit 48985576b1
1 changed files with 18 additions and 9 deletions
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27
libavcodec/ffv1dec.c
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@@ -181,7 +181,8 @@ static av_always_inline void decode_line(FFV1Context *s, int w,
} }
static void decode_plane(FFV1Context *s, uint8_t *src, static void decode_plane(FFV1Context *s, uint8_t *src,
int w, int h, int stride, int plane_index) int w, int h, int stride, int plane_index,
int pixel_stride)
{ {
int x, y; int x, y;
int16_t *sample[2]; int16_t *sample[2];
@@ -205,16 +206,16 @@ static void decode_plane(FFV1Context *s, uint8_t *src,
if (s->avctx->bits_per_raw_sample <= 8) { if (s->avctx->bits_per_raw_sample <= 8) {
decode_line(s, w, sample, plane_index, 8); decode_line(s, w, sample, plane_index, 8);
for (x = 0; x < w; x++) for (x = 0; x < w; x++)
src[x + stride * y] = sample[1][x]; src[x*pixel_stride + stride * y] = sample[1][x];
} else { } else {
decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
if (s->packed_at_lsb) { if (s->packed_at_lsb) {
for (x = 0; x < w; x++) { for (x = 0; x < w; x++) {
((uint16_t*)(src + stride*y))[x] = sample[1][x]; ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
} }
} else { } else {
for (x = 0; x < w; x++) { for (x = 0; x < w; x++) {
((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample); ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
} }
} }
} }
@@ -433,19 +434,22 @@ static int decode_slice(AVCodecContext *c, void *arg)
} }
av_assert1(width && height); av_assert1(width && height);
if (f->colorspace == 0) { if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift); const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift); const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
const int cx = x >> f->chroma_h_shift; const int cx = x >> f->chroma_h_shift;
const int cy = y >> f->chroma_v_shift; const int cy = y >> f->chroma_v_shift;
decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0); decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
if (f->chroma_planes) { if (f->chroma_planes) {
decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1); decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
} }
if (fs->transparency) if (fs->transparency)
decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2); decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
} else if (f->colorspace == 0) {
decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
} else { } else {
uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0], uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
p->data[1] + ps * x + y * p->linesize[1], p->data[1] + ps * x + y * p->linesize[1],
@@ -697,6 +701,11 @@ static int read_header(FFV1Context *f)
f->avctx->pix_fmt = AV_PIX_FMT_GRAY8; f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
else else
f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
} else if (f->transparency && !f->chroma_planes) {
if (f->avctx->bits_per_raw_sample <= 8)
f->avctx->pix_fmt = AV_PIX_FMT_YA8;
else
return AVERROR(ENOSYS);
} else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) { } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
switch(16 * f->chroma_h_shift + f->chroma_v_shift) { switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break; case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;