mirror of https://git.ffmpeg.org/ffmpeg.git
Simplify intra PCM MB handling.
Originally committed as revision 14476 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
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9f31c7ef37
commit
c1708e8dc8
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@ -2502,30 +2502,12 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
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}
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if (!simple && IS_INTRA_PCM(mb_type)) {
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unsigned int x, y;
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// The pixels are stored in h->mb array in the same order as levels,
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// copy them in output in the correct order.
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for(i=0; i<16; i++) {
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for (y=0; y<4; y++) {
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for (x=0; x<4; x++) {
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*(dest_y + block_offset[i] + y*linesize + x) = h->mb[i*16+y*4+x];
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}
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}
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for (i=0; i<16; i++) {
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memcpy(dest_y + i* linesize, h->mb + i*8, 16);
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}
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for(i=16; i<16+4; i++) {
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for (y=0; y<4; y++) {
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for (x=0; x<4; x++) {
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*(dest_cb + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
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}
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}
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}
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for(i=20; i<20+4; i++) {
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for (y=0; y<4; y++) {
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for (x=0; x<4; x++) {
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*(dest_cr + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
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}
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}
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for (i=0; i<8; i++) {
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memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
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memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
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}
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} else {
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if(IS_INTRA(mb_type)){
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@ -4405,34 +4387,14 @@ decode_intra_mb:
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h->slice_table[ mb_xy ]= h->slice_num;
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if(IS_INTRA_PCM(mb_type)){
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unsigned int x, y;
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unsigned int x;
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// We assume these blocks are very rare so we do not optimize it.
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align_get_bits(&s->gb);
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// The pixels are stored in the same order as levels in h->mb array.
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for(y=0; y<16; y++){
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const int index= 4*(y&3) + 32*((y>>2)&1) + 128*(y>>3);
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for(x=0; x<16; x++){
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tprintf(s->avctx, "LUMA ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
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h->mb[index + (x&3) + 16*((x>>2)&1) + 64*(x>>3)]= get_bits(&s->gb, 8);
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}
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}
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if(CHROMA){
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for(y=0; y<8; y++){
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const int index= 256 + 4*(y&3) + 32*(y>>2);
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for(x=0; x<8; x++){
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tprintf(s->avctx, "CHROMA U ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
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h->mb[index + (x&3) + 16*(x>>2)]= get_bits(&s->gb, 8);
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}
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}
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for(y=0; y<8; y++){
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const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
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for(x=0; x<8; x++){
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tprintf(s->avctx, "CHROMA V ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
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h->mb[index + (x&3) + 16*(x>>2)]= get_bits(&s->gb, 8);
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}
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}
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for(x=0; x < (CHROMA ? 384 : 256); x++){
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((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
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}
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// In deblocking, the quantizer is 0
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@ -5545,7 +5507,6 @@ decode_intra_mb:
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if(IS_INTRA_PCM(mb_type)) {
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const uint8_t *ptr;
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unsigned int x, y;
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// We assume these blocks are very rare so we do not optimize it.
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// FIXME The two following lines get the bitstream position in the cabac
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@ -5557,28 +5518,9 @@ decode_intra_mb:
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}
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// The pixels are stored in the same order as levels in h->mb array.
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for(y=0; y<16; y++){
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const int index= 4*(y&3) + 32*((y>>2)&1) + 128*(y>>3);
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for(x=0; x<16; x++){
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tprintf(s->avctx, "LUMA ICPM LEVEL (%3d)\n", *ptr);
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h->mb[index + (x&3) + 16*((x>>2)&1) + 64*(x>>3)]= *ptr++;
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}
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}
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memcpy(h->mb, ptr, 256); ptr+=256;
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if(CHROMA){
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for(y=0; y<8; y++){
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const int index= 256 + 4*(y&3) + 32*(y>>2);
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for(x=0; x<8; x++){
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tprintf(s->avctx, "CHROMA U ICPM LEVEL (%3d)\n", *ptr);
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h->mb[index + (x&3) + 16*(x>>2)]= *ptr++;
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}
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}
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for(y=0; y<8; y++){
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const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
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for(x=0; x<8; x++){
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tprintf(s->avctx, "CHROMA V ICPM LEVEL (%3d)\n", *ptr);
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h->mb[index + (x&3) + 16*(x>>2)]= *ptr++;
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}
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}
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memcpy(h->mb+128, ptr, 128); ptr+=128;
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}
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ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
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