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ffv1: more than 8 bit per RGB channel
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Add support for GBRP9, GBRP10, GBRP12 and GBRP14 pix formats in ffv1.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@lippit @michaelni
lippit authored and michaelni committed Aug 23, 2012
1 parent 2b3b52d commit 15acfa2
Showing 1 changed file with 77 additions and 17 deletions.
94 changes: 77 additions & 17 deletions libavcodec/ffv1.c
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Expand Up @@ -38,6 +38,7 @@
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/timer.h"

#ifdef __INTEL_COMPILER
#undef av_flatten
Expand Down Expand Up @@ -579,10 +580,13 @@ static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
}
}

static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
static void encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3]){
int x, y, p, i;
const int ring_size= s->avctx->context_model ? 3 : 2;
int16_t *sample[4][3];
int lbd= s->avctx->bits_per_raw_sample <= 8;
int bits= s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
int offset= 1 << bits;
s->run_index=0;

memset(s->sample_buffer, 0, ring_size*4*(w+6)*sizeof(*s->sample_buffer));
Expand All @@ -593,17 +597,24 @@ static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;

for(x=0; x<w; x++){
unsigned v= src[x + stride*y];
int b= v&0xFF;
int g= (v>>8)&0xFF;
int r= (v>>16)&0xFF;
int a= v>>24;
int b,g,r,a;
if(lbd){
unsigned v= *((uint32_t*)(src[0] + x*4 + stride[0]*y));
b= v&0xFF;
g= (v>>8)&0xFF;
r= (v>>16)&0xFF;
a= v>>24;
}else{
b= *((uint16_t*)(src[0] + x*2 + stride[0]*y));
g= *((uint16_t*)(src[1] + x*2 + stride[1]*y));
r= *((uint16_t*)(src[2] + x*2 + stride[2]*y));
}

b -= g;
r -= g;
g += (b + r)>>2;
b += 0x100;
r += 0x100;
b += offset;
r += offset;

// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);
Expand All @@ -615,7 +626,10 @@ static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
for(p=0; p<3 + s->transparency; p++){
sample[p][0][-1]= sample[p][1][0 ];
sample[p][1][ w]= sample[p][1][w-1];
encode_line(s, w, sample[p], (p+1)/2, 9);
if (lbd)
encode_line(s, w, sample[p], (p+1)/2, 9);
else
encode_line(s, w, sample[p], (p+1)/2, bits+1);
}
}
}
Expand Down Expand Up @@ -980,6 +994,24 @@ static av_cold int encode_init(AVCodecContext *avctx)
case PIX_FMT_0RGB32:
s->colorspace= 1;
break;
case PIX_FMT_GBRP9:
if (!avctx->bits_per_raw_sample)
s->bits_per_raw_sample = 9;
case PIX_FMT_GBRP10:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 10;
case PIX_FMT_GBRP12:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 12;
case PIX_FMT_GBRP14:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 14;
else if (!s->bits_per_raw_sample)
s->bits_per_raw_sample = avctx->bits_per_raw_sample;
s->colorspace= 1;
s->chroma_planes= 1;
s->version= FFMAX(s->version, 1);
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR_INVALIDDATA;
Expand Down Expand Up @@ -1225,7 +1257,10 @@ static int encode_slice(AVCodecContext *c, void *arg){
if (fs->transparency)
encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
}else{
encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
p->data[1] + ps*x + y*p->linesize[1],
p->data[2] + ps*x + y*p->linesize[2]};
encode_rgb_frame(fs, planes, width, height, p->linesize);
}
emms_c();

Expand Down Expand Up @@ -1500,9 +1535,12 @@ static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
}
}

static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3]){
int x, y, p;
int16_t *sample[4][2];
int lbd= s->avctx->bits_per_raw_sample <= 8;
int bits= s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
int offset= 1 << bits;
for(x=0; x<4; x++){
sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3;
sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;
Expand All @@ -1521,7 +1559,10 @@ static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st

sample[p][1][-1]= sample[p][0][0 ];
sample[p][0][ w]= sample[p][0][w-1];
decode_line(s, w, sample[p], (p+1)/2, 9);
if (lbd)
decode_line(s, w, sample[p], (p+1)/2, 9);
else
decode_line(s, w, sample[p], (p+1)/2, bits+1);
}
for(x=0; x<w; x++){
int g= sample[0][1][x];
Expand All @@ -1532,13 +1573,19 @@ static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);

b -= 0x100;
r -= 0x100;
b -= offset;
r -= offset;
g -= (b + r)>>2;
b += g;
r += g;

src[x + stride*y]= b + (g<<8) + (r<<16) + (a<<24);
if(lbd)
*((uint32_t*)(src[0] + x*4 + stride[0]*y))= b + (g<<8) + (r<<16) + (a<<24);
else{
*((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
*((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
*((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
}
}
}
}
Expand Down Expand Up @@ -1646,7 +1693,10 @@ static int decode_slice(AVCodecContext *c, void *arg){
if (fs->transparency)
decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
}else{
decode_rgb_frame(fs, (uint32_t*)p->data[0] + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
p->data[1] + ps*x + y*p->linesize[1],
p->data[2] + ps*x + y*p->linesize[2]};
decode_rgb_frame(fs, planes, width, height, p->linesize);
}
if(fs->ac && f->version > 2) {
int v = fs->c.bytestream_end - fs->c.bytestream - 3 - 5*f->ec;
Expand Down Expand Up @@ -1871,6 +1921,15 @@ static int read_header(FFV1Context *f){
av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");
return -1;
}
if(f->avctx->bits_per_raw_sample==9)
f->avctx->pix_fmt= PIX_FMT_GBRP9;
else if(f->avctx->bits_per_raw_sample==10)
f->avctx->pix_fmt= PIX_FMT_GBRP10;
else if(f->avctx->bits_per_raw_sample==12)
f->avctx->pix_fmt= PIX_FMT_GBRP12;
else if(f->avctx->bits_per_raw_sample==14)
f->avctx->pix_fmt= PIX_FMT_GBRP14;
else
if(f->transparency) f->avctx->pix_fmt= PIX_FMT_RGB32;
else f->avctx->pix_fmt= PIX_FMT_0RGB32;
}else{
Expand Down Expand Up @@ -2130,7 +2189,8 @@ AVCodec ff_ffv1_encoder = {
PIX_FMT_YUV410P, PIX_FMT_0RGB32, PIX_FMT_RGB32, PIX_FMT_YUV420P16,
PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV444P9, PIX_FMT_YUV422P9,
PIX_FMT_YUV420P9, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_YUV444P10,
PIX_FMT_GRAY16, PIX_FMT_GRAY8,
PIX_FMT_GRAY16, PIX_FMT_GRAY8, PIX_FMT_GBRP9, PIX_FMT_GBRP10,
PIX_FMT_GBRP12, PIX_FMT_GBRP14,
PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
Expand Down

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