|
|
|
@ -25,7 +25,7 @@ |
|
|
|
|
*/ |
|
|
|
|
|
|
|
|
|
#include "avcodec.h" |
|
|
|
|
#include "get_bits.h" |
|
|
|
|
#include "bitstream.h" |
|
|
|
|
#include "internal.h" |
|
|
|
|
|
|
|
|
|
static int decode_frame(AVCodecContext *avctx, |
|
|
|
@ -34,7 +34,7 @@ static int decode_frame(AVCodecContext *avctx, |
|
|
|
|
{ |
|
|
|
|
const uint8_t *buf = avpkt->data; |
|
|
|
|
int buf_size = avpkt->size; |
|
|
|
|
GetBitContext gb; |
|
|
|
|
BitstreamContext bc; |
|
|
|
|
AVFrame * const p = data; |
|
|
|
|
int x, y, ret; |
|
|
|
|
|
|
|
|
@ -56,20 +56,20 @@ static int decode_frame(AVCodecContext *avctx, |
|
|
|
|
p->pict_type = AV_PICTURE_TYPE_I; |
|
|
|
|
p->key_frame = 1; |
|
|
|
|
|
|
|
|
|
init_get_bits(&gb, buf, buf_size * 8); |
|
|
|
|
bitstream_init(&bc, buf, buf_size * 8); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < avctx->height; y++) { |
|
|
|
|
uint8_t *luma = &p->data[0][y * p->linesize[0]]; |
|
|
|
|
uint8_t *cb = &p->data[1][y * p->linesize[1]]; |
|
|
|
|
uint8_t *cr = &p->data[2][y * p->linesize[2]]; |
|
|
|
|
for (x = 0; x < avctx->width; x += 4) { |
|
|
|
|
luma[3] = get_bits(&gb, 5) << 3; |
|
|
|
|
luma[2] = get_bits(&gb, 5) << 3; |
|
|
|
|
luma[1] = get_bits(&gb, 5) << 3; |
|
|
|
|
luma[0] = get_bits(&gb, 5) << 3; |
|
|
|
|
luma[3] = bitstream_read(&bc, 5) << 3; |
|
|
|
|
luma[2] = bitstream_read(&bc, 5) << 3; |
|
|
|
|
luma[1] = bitstream_read(&bc, 5) << 3; |
|
|
|
|
luma[0] = bitstream_read(&bc, 5) << 3; |
|
|
|
|
luma += 4; |
|
|
|
|
*(cb++) = get_bits(&gb, 6) << 2; |
|
|
|
|
*(cr++) = get_bits(&gb, 6) << 2; |
|
|
|
|
*(cb++) = bitstream_read(&bc, 6) << 2; |
|
|
|
|
*(cr++) = bitstream_read(&bc, 6) << 2; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|