mirror of
https://github.com/FFmpeg/FFmpeg.git
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svq3 decoder by anonymous
Originally committed as revision 1845 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
a466e345e4
commit
8b82a95675
@ -81,6 +81,7 @@ void avcodec_register_all(void)
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register_avcodec(&h263i_decoder);
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register_avcodec(&rv10_decoder);
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register_avcodec(&svq1_decoder);
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register_avcodec(&svq3_decoder);
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register_avcodec(&wmav1_decoder);
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register_avcodec(&wmav2_decoder);
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register_avcodec(&indeo3_decoder);
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@ -41,6 +41,7 @@ enum CodecID {
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CODEC_ID_H263P,
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CODEC_ID_H263I,
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CODEC_ID_SVQ1,
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CODEC_ID_SVQ3,
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CODEC_ID_DVVIDEO,
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CODEC_ID_DVAUDIO,
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CODEC_ID_WMAV1,
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@ -1204,6 +1205,7 @@ extern AVCodec mpeg_decoder;
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extern AVCodec h263i_decoder;
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extern AVCodec rv10_decoder;
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extern AVCodec svq1_decoder;
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extern AVCodec svq3_decoder;
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extern AVCodec dvvideo_decoder;
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extern AVCodec dvaudio_decoder;
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extern AVCodec wmav1_decoder;
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@ -25,6 +25,8 @@
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#define INVALID_VLC 0x80000000
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extern const uint8_t ff_golomb_vlc_len[512];
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extern const uint8_t ff_ue_golomb_vlc_code[512];
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extern const int8_t ff_se_golomb_vlc_code[512];
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@ -59,6 +61,27 @@ static inline int get_ue_golomb(GetBitContext *gb){
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}
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}
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static inline int svq3_get_ue_golomb(GetBitContext *gb){
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unsigned int buf;
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int log;
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OPEN_READER(re, gb);
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UPDATE_CACHE(re, gb);
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buf=GET_CACHE(re, gb)|1;
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if((buf & 0xAAAAAAAA) == 0)
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return INVALID_VLC;
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for(log=31; (buf & 0x80000000) == 0; log--){
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buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
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}
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LAST_SKIP_BITS(re, gb, 63 - 2*log);
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CLOSE_READER(re, gb);
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return ((buf << log) >> log) - 1;
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}
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/**
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* read unsigned truncated exp golomb code.
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*/
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@ -112,6 +135,27 @@ static inline int get_se_golomb(GetBitContext *gb){
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}
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}
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static inline int svq3_get_se_golomb(GetBitContext *gb){
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unsigned int buf;
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int log;
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OPEN_READER(re, gb);
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UPDATE_CACHE(re, gb);
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buf=GET_CACHE(re, gb)|1;
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if((buf & 0xAAAAAAAA) == 0)
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return INVALID_VLC;
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for(log=31; (buf & 0x80000000) == 0; log--){
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buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
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}
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LAST_SKIP_BITS(re, gb, 63 - 2*log);
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CLOSE_READER(re, gb);
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return (signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
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}
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#ifdef TRACE
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static inline int get_ue(GetBitContext *s, char *file, char *func, int line){
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@ -195,6 +195,9 @@ typedef struct H264Context{
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int b_stride;
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int b8_stride;
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int halfpel_flag;
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int thirdpel_flag;
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SPS sps_buffer[MAX_SPS_COUNT];
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SPS sps; ///< current sps
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@ -291,6 +294,9 @@ static VLC chroma_dc_total_zeros_vlc[3];
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static VLC run_vlc[6];
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static VLC run7_vlc;
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static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
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static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
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/**
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* fill a rectangle.
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* @param h height of the recatangle, should be a constant
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@ -1676,7 +1682,7 @@ static void pred16x16_128_dc_c(uint8_t *src, int stride){
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}
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}
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static void pred16x16_plane_c(uint8_t *src, int stride){
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static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3){
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int i, j, k;
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int a;
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uint8_t *cm = cropTbl + MAX_NEG_CROP;
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@ -1690,8 +1696,13 @@ static void pred16x16_plane_c(uint8_t *src, int stride){
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H += k*(src0[k] - src0[-k]);
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V += k*(src1[0] - src2[ 0]);
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}
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H = ( 5*H+32 ) >> 6;
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V = ( 5*V+32 ) >> 6;
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if(svq3){
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H = ( 5*(H/4) ) / 16;
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V = ( 5*(V/4) ) / 16;
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}else{
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H = ( 5*H+32 ) >> 6;
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V = ( 5*V+32 ) >> 6;
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}
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a = 16*(src1[0] + src2[16] + 1) - 7*(V+H);
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for(j=16; j>0; --j) {
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@ -1708,6 +1719,10 @@ static void pred16x16_plane_c(uint8_t *src, int stride){
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}
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}
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static void pred16x16_plane_c(uint8_t *src, int stride){
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pred16x16_plane_compat_c(src, stride, 0);
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}
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static void pred8x8_vertical_c(uint8_t *src, int stride){
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int i;
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const uint32_t a= ((uint32_t*)(src-stride))[0];
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@ -2240,15 +2255,22 @@ static void hl_decode_mb(H264Context *h){
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}
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h->pred4x4[ dir ](ptr, topright, linesize);
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if(h->non_zero_count_cache[ scan8[i] ])
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h264_add_idct_c(ptr, h->mb + i*16, linesize);
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if(h->non_zero_count_cache[ scan8[i] ]){
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if(s->codec_id == CODEC_ID_H264)
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h264_add_idct_c(ptr, h->mb + i*16, linesize);
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else
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svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
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}
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}
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}
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}else{
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h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
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h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
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if(s->codec_id == CODEC_ID_H264)
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h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
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else
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svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
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}
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}else{
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}else if(s->codec_id == CODEC_ID_H264){
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hl_motion(h, dest_y, dest_cb, dest_cr,
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s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab,
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s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab);
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@ -2259,7 +2281,10 @@ static void hl_decode_mb(H264Context *h){
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for(i=0; i<16; i++){
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if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
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uint8_t * const ptr= dest_y + h->block_offset[i];
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h264_add_idct_c(ptr, h->mb + i*16, linesize);
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if(s->codec_id == CODEC_ID_H264)
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h264_add_idct_c(ptr, h->mb + i*16, linesize);
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else
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svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
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}
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}
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}
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@ -2270,13 +2295,19 @@ static void hl_decode_mb(H264Context *h){
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for(i=16; i<16+4; i++){
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if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
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uint8_t * const ptr= dest_cb + h->block_offset[i];
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h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
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if(s->codec_id == CODEC_ID_H264)
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h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
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else
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svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
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}
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}
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for(i=20; i<20+4; i++){
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if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
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uint8_t * const ptr= dest_cr + h->block_offset[i];
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h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
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if(s->codec_id == CODEC_ID_H264)
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h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
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else
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svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
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}
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}
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}
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@ -4370,3 +4401,4 @@ AVCodec h264_decoder = {
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/*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
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};
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#include "svq3.c"
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@ -928,7 +928,7 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
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s->mb_skiped = 0;
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assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264);
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assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
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/* mark&release old frames */
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if (s->pict_type != B_TYPE && s->last_picture_ptr) {
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@ -973,7 +973,7 @@ alloc:
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s->current_picture= *s->current_picture_ptr;
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if(s->out_format != FMT_H264){
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if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
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if (s->pict_type != B_TYPE) {
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s->last_picture_ptr= s->next_picture_ptr;
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s->next_picture_ptr= s->current_picture_ptr;
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770
libavcodec/svq3.c
Normal file
770
libavcodec/svq3.c
Normal file
@ -0,0 +1,770 @@
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/*
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* Copyright (c) 2003 The FFmpeg Project.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* How to use this decoder:
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* SVQ3 data is transported within Apple Quicktime files. Quicktime files
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* have stsd atoms to describe media trak properties. Sometimes the stsd
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* atom contains information that the decoder must know in order to function
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* properly. Such is the case with SVQ3. In order to get the best use out
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* of this decoder, the calling app must make the video stsd atom available
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* via the AVCodecContext's extradata[_size] field:
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*
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* AVCodecContext.extradata = pointer to stsd, first characters are expected
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* to be 's', 't', 's', and 'd', NOT the atom length
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* AVCodecContext.extradata_size = size of stsd atom memory buffer (which
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* will be the same as the stsd atom size field from the QT file, minus 4
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* bytes since the length is missing.
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*
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*/
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/**
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* @file svq3.c
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* svq3 decoder.
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*/
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static const uint8_t svq3_scan[16]={
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0+0*4, 1+0*4, 2+0*4, 2+1*4,
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2+2*4, 3+0*4, 3+1*4, 3+2*4,
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0+1*4, 0+2*4, 1+1*4, 1+2*4,
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0+3*4, 1+3*4, 2+3*4, 3+3*4,
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};
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static const uint8_t svq3_pred_0[25][2] = {
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{ 0, 0 },
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{ 1, 0 }, { 0, 1 },
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{ 0, 2 }, { 1, 1 }, { 2, 0 },
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{ 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
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{ 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
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{ 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
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{ 2, 4 }, { 3, 3 }, { 4, 2 },
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{ 4, 3 }, { 3, 4 },
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{ 4, 4 }
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};
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static const int8_t svq3_pred_1[6][6][5] = {
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{ { 2,-1,-1,-1,-1 }, { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 },
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{ 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 }, { 1, 2,-1,-1,-1 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
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{ 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
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{ { 2, 0,-1,-1,-1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
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{ 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
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{ { 2, 0,-1,-1,-1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
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{ 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
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{ 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
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{ 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
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};
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static const struct { uint8_t run; uint8_t level; } svq3_dct_tables[2][16] = {
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
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{ 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
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{ 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
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};
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static const uint32_t svq3_dequant_coeff[32] = {
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3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
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9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
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24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
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61694, 68745, 77615, 89113,100253,109366,126635,141533
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};
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static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
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const int qmul= svq3_dequant_coeff[qp];
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#define stride 16
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int i;
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int temp[16];
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static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
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static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
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for(i=0; i<4; i++){
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const int offset= y_offset[i];
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const int z0= 13*(block[offset+stride*0] + block[offset+stride*4]);
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const int z1= 13*(block[offset+stride*0] - block[offset+stride*4]);
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const int z2= 7* block[offset+stride*1] - 17*block[offset+stride*5];
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const int z3= 17* block[offset+stride*1] + 7*block[offset+stride*5];
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temp[4*i+0]= z0+z3;
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temp[4*i+1]= z1+z2;
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temp[4*i+2]= z1-z2;
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temp[4*i+3]= z0-z3;
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}
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for(i=0; i<4; i++){
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const int offset= x_offset[i];
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const int z0= 13*(temp[4*0+i] + temp[4*2+i]);
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const int z1= 13*(temp[4*0+i] - temp[4*2+i]);
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const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
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const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
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block[stride*0 +offset]= ((z0 + z3)*qmul + 0x80000)>>20;
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block[stride*2 +offset]= ((z1 + z2)*qmul + 0x80000)>>20;
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block[stride*8 +offset]= ((z1 - z2)*qmul + 0x80000)>>20;
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block[stride*10+offset]= ((z0 - z3)*qmul + 0x80000)>>20;
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}
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}
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#undef stride
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static void svq3_add_idct_c (uint8_t *dst, DCTELEM *block, int stride, int qp, int dc){
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const int qmul= svq3_dequant_coeff[qp];
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int i;
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uint8_t *cm = cropTbl + MAX_NEG_CROP;
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if (dc) {
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dc = 13*13*((dc == 1) ? 1538*block[0] : ((qmul*(block[0] >> 3)) / 2));
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block[0] = 0;
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}
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for (i=0; i < 4; i++) {
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const int z0= 13*(block[0 + 4*i] + block[2 + 4*i]);
|
||||
const int z1= 13*(block[0 + 4*i] - block[2 + 4*i]);
|
||||
const int z2= 7* block[1 + 4*i] - 17*block[3 + 4*i];
|
||||
const int z3= 17* block[1 + 4*i] + 7*block[3 + 4*i];
|
||||
|
||||
block[0 + 4*i]= z0 + z3;
|
||||
block[1 + 4*i]= z1 + z2;
|
||||
block[2 + 4*i]= z1 - z2;
|
||||
block[3 + 4*i]= z0 - z3;
|
||||
}
|
||||
|
||||
for (i=0; i < 4; i++) {
|
||||
const int z0= 13*(block[i + 4*0] + block[i + 4*2]);
|
||||
const int z1= 13*(block[i + 4*0] - block[i + 4*2]);
|
||||
const int z2= 7* block[i + 4*1] - 17*block[i + 4*3];
|
||||
const int z3= 17* block[i + 4*1] + 7*block[i + 4*3];
|
||||
const int rr= (dc + 0x80000);
|
||||
|
||||
dst[i + stride*0]= cm[ dst[i + stride*0] + (((z0 + z3)*qmul + rr) >> 20) ];
|
||||
dst[i + stride*1]= cm[ dst[i + stride*1] + (((z1 + z2)*qmul + rr) >> 20) ];
|
||||
dst[i + stride*2]= cm[ dst[i + stride*2] + (((z1 - z2)*qmul + rr) >> 20) ];
|
||||
dst[i + stride*3]= cm[ dst[i + stride*3] + (((z0 - z3)*qmul + rr) >> 20) ];
|
||||
}
|
||||
}
|
||||
|
||||
static void pred4x4_down_left_svq3_c(uint8_t *src, uint8_t *topright, int stride){
|
||||
LOAD_TOP_EDGE
|
||||
LOAD_LEFT_EDGE
|
||||
const __attribute__((unused)) int unu0= t0;
|
||||
const __attribute__((unused)) int unu1= l0;
|
||||
|
||||
src[0+0*stride]=(l1 + t1)>>1;
|
||||
src[1+0*stride]=
|
||||
src[0+1*stride]=(l2 + t2)>>1;
|
||||
src[2+0*stride]=
|
||||
src[1+1*stride]=
|
||||
src[0+2*stride]=
|
||||
src[3+0*stride]=
|
||||
src[2+1*stride]=
|
||||
src[1+2*stride]=
|
||||
src[0+3*stride]=
|
||||
src[3+1*stride]=
|
||||
src[2+2*stride]=
|
||||
src[1+3*stride]=
|
||||
src[3+2*stride]=
|
||||
src[2+3*stride]=
|
||||
src[3+3*stride]=(l3 + t3)>>1;
|
||||
};
|
||||
|
||||
static void pred16x16_plane_svq3_c(uint8_t *src, int stride){
|
||||
pred16x16_plane_compat_c(src, stride, 1);
|
||||
}
|
||||
|
||||
static inline int svq3_decode_block (GetBitContext *gb, DCTELEM *block,
|
||||
int index, const int type) {
|
||||
|
||||
static const uint8_t *const scan_patterns[4] =
|
||||
{ luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan };
|
||||
|
||||
int run, level, sign, vlc, limit;
|
||||
const int intra = (3 * type) >> 2;
|
||||
const uint8_t *const scan = scan_patterns[type];
|
||||
|
||||
for (limit=(16 >> intra); index < 16; index=limit, limit+=8) {
|
||||
for (; (vlc = svq3_get_ue_golomb (gb)) != 0; index++) {
|
||||
|
||||
if (vlc == INVALID_VLC)
|
||||
return -1;
|
||||
|
||||
sign = (vlc & 0x1) - 1;
|
||||
vlc = (vlc + 1) >> 1;
|
||||
|
||||
if (type == 3) {
|
||||
if (vlc < 3) {
|
||||
run = 0;
|
||||
level = vlc;
|
||||
} else if (vlc < 4) {
|
||||
run = 1;
|
||||
level = 1;
|
||||
} else {
|
||||
run = (vlc & 0x3);
|
||||
level = ((vlc + 9) >> 2) - run;
|
||||
}
|
||||
} else {
|
||||
if (vlc < 16) {
|
||||
run = svq3_dct_tables[intra][vlc].run;
|
||||
level = svq3_dct_tables[intra][vlc].level;
|
||||
} else if (intra) {
|
||||
run = (vlc & 0x7);
|
||||
level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
|
||||
} else {
|
||||
run = (vlc & 0xF);
|
||||
level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
|
||||
}
|
||||
}
|
||||
|
||||
if ((index += run) >= limit)
|
||||
return -1;
|
||||
|
||||
block[scan[index]] = (level ^ sign) - sign;
|
||||
}
|
||||
|
||||
if (type != 2) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void sixpel_mc_put (MpegEncContext *s,
|
||||
uint8_t *src, uint8_t *dst, int stride,
|
||||
int dxy, int width, int height) {
|
||||
int i, j;
|
||||
|
||||
switch (dxy) {
|
||||
case 6*0+0:
|
||||
for (i=0; i < height; i++) {
|
||||
memcpy (dst, src, width);
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*0+2:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (683*(2*src[j] + src[j+1] + 1)) >> 11;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*0+3:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (src[j] + src[j+1] + 1) >> 1;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*0+4:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (683*(src[j] + 2*src[j+1] + 1)) >> 11;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*2+0:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (683*(2*src[j] + src[j+stride] + 1)) >> 11;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*2+2:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (2731*(4*src[j] + 3*src[j+1] + 3*src[j+stride] + 2*src[j+stride+1] + 6)) >> 15;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*2+4:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (2731*(3*src[j] + 4*src[j+1] + 2*src[j+stride] + 3*src[j+stride+1] + 6)) >> 15;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*3+0:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (src[j] + src[j+stride]+1) >> 1;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*3+3:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (src[j] + src[j+1] + src[j+stride] + src[j+stride+1] + 2) >> 2;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*4+0:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (683*(src[j] + 2*src[j+stride] + 1)) >> 11;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*4+2:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (2731*(3*src[j] + 2*src[j+1] + 4*src[j+stride] + 3*src[j+stride+1] + 6)) >> 15;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
case 6*4+4:
|
||||
for (i=0; i < height; i++) {
|
||||
for (j=0; j < width; j++) {
|
||||
dst[j] = (2731*(2*src[j] + 3*src[j+1] + 3*src[j+stride] + 4*src[j+stride+1] + 6)) >> 15;
|
||||
}
|
||||
src += stride;
|
||||
dst += stride;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static inline void svq3_mc_dir_part (MpegEncContext *s, int x, int y,
|
||||
int width, int height, int mx, int my) {
|
||||
uint8_t *src, *dest;
|
||||
int i, emu = 0;
|
||||
const int sx = ((unsigned) (mx + 0x7FFFFFFE)) % 6;
|
||||
const int sy = ((unsigned) (my + 0x7FFFFFFE)) % 6;
|
||||
const int dxy= 6*sy + sx;
|
||||
|
||||
/* decode and clip motion vector to frame border (+16) */
|
||||
mx = x + (mx - sx) / 6;
|
||||
my = y + (my - sy) / 6;
|
||||
|
||||
if (mx < 0 || mx >= (s->width - width - 1) ||
|
||||
my < 0 || my >= (s->height - height - 1)) {
|
||||
|
||||
if ((s->flags & CODEC_FLAG_EMU_EDGE)) {
|
||||
emu = 1;
|
||||
}
|
||||
|
||||
mx = clip (mx, -16, (s->width - width + 15));
|
||||
my = clip (my, -16, (s->height - height + 15));
|
||||
}
|
||||
|
||||
/* form component predictions */
|
||||
dest = s->current_picture.data[0] + x + y*s->linesize;
|
||||
src = s->last_picture.data[0] + mx + my*s->linesize;
|
||||
|
||||
if (emu) {
|
||||
ff_emulated_edge_mc (s, src, s->linesize, (width + 1), (height + 1),
|
||||
mx, my, s->width, s->height);
|
||||
src = s->edge_emu_buffer;
|
||||
}
|
||||
sixpel_mc_put (s, src, dest, s->linesize, dxy, width, height);
|
||||
|
||||
if (!(s->flags & CODEC_FLAG_GRAY)) {
|
||||
mx = (mx + (mx < (int) x)) >> 1;
|
||||
my = (my + (my < (int) y)) >> 1;
|
||||
width = (width >> 1);
|
||||
height = (height >> 1);
|
||||
|
||||
for (i=1; i < 3; i++) {
|
||||
dest = s->current_picture.data[i] + (x >> 1) + (y >> 1)*s->uvlinesize;
|
||||
src = s->last_picture.data[i] + mx + my*s->uvlinesize;
|
||||
|
||||
if (emu) {
|
||||
ff_emulated_edge_mc (s, src, s->uvlinesize, (width + 1), (height + 1),
|
||||
mx, my, (s->width >> 1), (s->height >> 1));
|
||||
src = s->edge_emu_buffer;
|
||||
}
|
||||
sixpel_mc_put (s, src, dest, s->uvlinesize, dxy, width, height);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
int cbp, dir, mode, mx, my, dx, dy, x, y, part_width, part_height;
|
||||
int i, j, k, l, m;
|
||||
uint32_t vlc;
|
||||
int8_t *top, *left;
|
||||
MpegEncContext *const s = (MpegEncContext *) h;
|
||||
const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
|
||||
const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
|
||||
|
||||
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
||||
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
||||
h->topright_samples_available = 0xFFFF;
|
||||
|
||||
if (mb_type == 0) { /* SKIP */
|
||||
svq3_mc_dir_part (s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0);
|
||||
|
||||
cbp = 0;
|
||||
mb_type = MB_TYPE_SKIP;
|
||||
} else if (mb_type < 8) { /* INTER */
|
||||
if (h->thirdpel_flag && h->halfpel_flag == !get_bits (&s->gb, 1)) {
|
||||
mode = 3; /* thirdpel */
|
||||
} else if (h->halfpel_flag && h->thirdpel_flag == !get_bits (&s->gb, 1)) {
|
||||
mode = 2; /* halfpel */
|
||||
} else {
|
||||
mode = 1; /* fullpel */
|
||||
}
|
||||
|
||||
/* fill caches */
|
||||
memset (h->ref_cache[0], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
|
||||
|
||||
if (s->mb_x > 0) {
|
||||
for (i=0; i < 4; i++) {
|
||||
*(uint32_t *) h->mv_cache[0][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - 1 + i*h->b_stride];
|
||||
h->ref_cache[0][scan8[0] - 1 + i*8] = 1;
|
||||
}
|
||||
} else {
|
||||
for (i=0; i < 4; i++) {
|
||||
*(uint32_t *) h->mv_cache[0][scan8[0] - 1 + i*8] = 0;
|
||||
h->ref_cache[0][scan8[0] - 1 + i*8] = 1;
|
||||
}
|
||||
}
|
||||
if (s->mb_y > 0) {
|
||||
memcpy (h->mv_cache[0][scan8[0] - 1*8], s->current_picture.motion_val[0][b_xy - h->b_stride], 4*2*sizeof(int16_t));
|
||||
memset (&h->ref_cache[0][scan8[0] - 1*8], 1, 4);
|
||||
|
||||
if (s->mb_x < (s->mb_width - 1)) {
|
||||
*(uint32_t *) h->mv_cache[0][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - h->b_stride + 4];
|
||||
h->ref_cache[0][scan8[0] + 4 - 1*8] = 1;
|
||||
}
|
||||
if (s->mb_x > 0) {
|
||||
*(uint32_t *) h->mv_cache[0][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - h->b_stride - 1];
|
||||
h->ref_cache[0][scan8[0] - 1 - 1*8] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
/* decode motion vector(s) and form prediction(s) */
|
||||
part_width = ((mb_type & 5) == 5) ? 4 : 8 << (mb_type & 1);
|
||||
part_height = 16 >> ((unsigned) mb_type / 3);
|
||||
|
||||
for (i=0; i < 16; i+=part_height) {
|
||||
for (j=0; j < 16; j+=part_width) {
|
||||
x = 16*s->mb_x + j;
|
||||
y = 16*s->mb_y + i;
|
||||
k = ((j>>2)&1) + ((i>>1)&2) + ((j>>1)&4) + (i&8);
|
||||
|
||||
pred_motion (h, k, (part_width >> 2), 0, 1, &mx, &my);
|
||||
|
||||
/* clip motion vector prediction to frame border */
|
||||
mx = clip (mx, -6*x, 6*(s->width - part_width - x));
|
||||
my = clip (my, -6*y, 6*(s->height - part_height - y));
|
||||
|
||||
/* get motion vector differential */
|
||||
dy = svq3_get_se_golomb (&s->gb);
|
||||
dx = svq3_get_se_golomb (&s->gb);
|
||||
|
||||
if (dx == INVALID_VLC || dy == INVALID_VLC) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* compute motion vector */
|
||||
if (mode == 3) {
|
||||
mx = ((mx + 1) & ~0x1) + 2*dx;
|
||||
my = ((my + 1) & ~0x1) + 2*dy;
|
||||
} else if (mode == 2) {
|
||||
mx = (mx + 1) - ((unsigned) (0x7FFFFFFF + mx) % 3) + 3*dx;
|
||||
my = (my + 1) - ((unsigned) (0x7FFFFFFF + my) % 3) + 3*dy;
|
||||
} else if (mode == 1) {
|
||||
mx = (mx + 3) - ((unsigned) (0x7FFFFFFB + mx) % 6) + 6*dx;
|
||||
my = (my + 3) - ((unsigned) (0x7FFFFFFB + my) % 6) + 6*dy;
|
||||
}
|
||||
|
||||
/* update mv_cache */
|
||||
for (l=0; l < part_height; l+=4) {
|
||||
for (m=0; m < part_width; m+=4) {
|
||||
k = scan8[0] + ((m + j) >> 2) + ((l + i) << 1);
|
||||
h->mv_cache [0][k][0] = mx;
|
||||
h->mv_cache [0][k][1] = my;
|
||||
h->ref_cache[0][k] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, mx, my);
|
||||
}
|
||||
}
|
||||
|
||||
for (i=0; i < 4; i++) {
|
||||
memcpy (s->current_picture.motion_val[0][b_xy + i*h->b_stride], h->mv_cache[0][scan8[0] + 8*i], 4*2*sizeof(int16_t));
|
||||
}
|
||||
|
||||
if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
|
||||
return -1;
|
||||
|
||||
cbp = golomb_to_inter_cbp[vlc];
|
||||
mb_type = MB_TYPE_16x16;
|
||||
} else if (mb_type == 8) { /* INTRA4x4 */
|
||||
memset (h->intra4x4_pred_mode_cache, -1, 8*5*sizeof(int8_t));
|
||||
|
||||
if (s->mb_x > 0) {
|
||||
for (i=0; i < 4; i++) {
|
||||
h->intra4x4_pred_mode_cache[scan8[0] - 1 + i*8] = h->intra4x4_pred_mode[mb_xy - 1][i];
|
||||
}
|
||||
}
|
||||
if (s->mb_y > 0) {
|
||||
h->intra4x4_pred_mode_cache[4+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][4];
|
||||
h->intra4x4_pred_mode_cache[5+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][5];
|
||||
h->intra4x4_pred_mode_cache[6+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][6];
|
||||
h->intra4x4_pred_mode_cache[7+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][3];
|
||||
}
|
||||
|
||||
/* decode prediction codes for luma blocks */
|
||||
for (i=0; i < 16; i+=2) {
|
||||
vlc = svq3_get_ue_golomb (&s->gb);
|
||||
|
||||
if (vlc >= 25)
|
||||
return -1;
|
||||
|
||||
left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
|
||||
top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
|
||||
|
||||
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
|
||||
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
|
||||
|
||||
if (left[1] == -1 || left[2] == -1)
|
||||
return -1;
|
||||
}
|
||||
|
||||
write_back_intra_pred_mode (h);
|
||||
check_intra4x4_pred_mode (h);
|
||||
|
||||
if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
|
||||
return -1;
|
||||
|
||||
cbp = golomb_to_intra4x4_cbp[vlc];
|
||||
mb_type = MB_TYPE_INTRA4x4;
|
||||
} else { /* INTRA16x16 */
|
||||
dir = i_mb_type_info[mb_type - 8].pred_mode;
|
||||
dir = (dir >> 1) ^ 3*(dir & 1) ^ 1;
|
||||
|
||||
if ((h->intra16x16_pred_mode = check_intra_pred_mode (h, dir)) == -1)
|
||||
return -1;
|
||||
|
||||
cbp = i_mb_type_info[mb_type - 8].cbp;
|
||||
mb_type = MB_TYPE_INTRA16x16;
|
||||
}
|
||||
|
||||
if (!IS_INTER(mb_type) && s->pict_type != I_TYPE) {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (s->current_picture.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
||||
}
|
||||
}
|
||||
if (!IS_INTRA4x4(mb_type)) {
|
||||
memset (h->intra4x4_pred_mode[mb_xy], DC_PRED, 8);
|
||||
}
|
||||
if (!IS_SKIP(mb_type)) {
|
||||
memset (h->mb, 0, 24*16*sizeof(DCTELEM));
|
||||
memset (h->non_zero_count_cache, 0, 8*6*sizeof(uint8_t));
|
||||
}
|
||||
|
||||
if (IS_INTRA16x16(mb_type) || (s->pict_type != I_TYPE && s->adaptive_quant && cbp)) {
|
||||
s->qscale += svq3_get_se_golomb (&s->gb);
|
||||
|
||||
if (s->qscale > 31)
|
||||
return -1;
|
||||
}
|
||||
if (IS_INTRA16x16(mb_type)) {
|
||||
if (svq3_decode_block (&s->gb, h->mb, 0, 0))
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!IS_SKIP(mb_type) && cbp) {
|
||||
l = IS_INTRA16x16(mb_type) ? 1 : 0;
|
||||
m = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
|
||||
|
||||
for (i=0; i < 4; i++) {
|
||||
if ((cbp & (1 << i))) {
|
||||
for (j=0; j < 4; j++) {
|
||||
k = l ? ((j&1) + 2*(i&1) + 2*(j&2) + 4*(i&2)) : (4*i + j);
|
||||
h->non_zero_count_cache[ scan8[k] ] = 1;
|
||||
|
||||
if (svq3_decode_block (&s->gb, &h->mb[16*k], l, m))
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ((cbp & 0x30)) {
|
||||
for (i=0; i < 2; ++i) {
|
||||
if (svq3_decode_block (&s->gb, &h->mb[16*(16 + 4*i)], 0, 3))
|
||||
return -1;
|
||||
}
|
||||
|
||||
if ((cbp & 0x20)) {
|
||||
for (i=0; i < 8; i++) {
|
||||
h->non_zero_count_cache[ scan8[16+i] ] = 1;
|
||||
|
||||
if (svq3_decode_block (&s->gb, &h->mb[16*(16 + i)], 1, 1))
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
s->current_picture.mb_type[mb_xy] = mb_type;
|
||||
|
||||
if (IS_INTRA(mb_type)) {
|
||||
h->chroma_pred_mode = check_intra_pred_mode (h, DC_PRED8x8);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
void *data, int *data_size,
|
||||
uint8_t *buf, int buf_size) {
|
||||
MpegEncContext *const s = avctx->priv_data;
|
||||
H264Context *const h = avctx->priv_data;
|
||||
int i;
|
||||
|
||||
s->flags = avctx->flags;
|
||||
|
||||
if (!s->context_initialized) {
|
||||
s->width = (avctx->width + 15) & ~15;
|
||||
s->height = (avctx->height + 15) & ~15;
|
||||
h->b_stride = (s->width >> 2);
|
||||
h->pred4x4[DIAG_DOWN_LEFT_PRED] = pred4x4_down_left_svq3_c;
|
||||
h->pred16x16[PLANE_PRED8x8] = pred16x16_plane_svq3_c;
|
||||
h->halfpel_flag = 1;
|
||||
h->thirdpel_flag = 1;
|
||||
h->chroma_qp = 4;
|
||||
|
||||
if (MPV_common_init (s) < 0)
|
||||
return -1;
|
||||
|
||||
alloc_tables (h);
|
||||
}
|
||||
if (avctx->extradata && avctx->extradata_size >= 115
|
||||
&& !memcmp (avctx->extradata, "stsd", 4)) {
|
||||
|
||||
uint8_t *stsd = (uint8_t *) avctx->extradata + 114;
|
||||
|
||||
if ((*stsd >> 5) != 7 || avctx->extradata_size >= 118) {
|
||||
|
||||
if ((*stsd >> 5) == 7) {
|
||||
stsd += 3; /* skip width, height (12 bits each) */
|
||||
}
|
||||
|
||||
h->halfpel_flag = (*stsd >> 4) & 1;
|
||||
h->thirdpel_flag = (*stsd >> 3) & 1;
|
||||
}
|
||||
}
|
||||
|
||||
if ((buf[0] & 0x9F) != 1) {
|
||||
/* TODO: what? */
|
||||
fprintf (stderr, "unsupported header (%02X)\n", buf[0]);
|
||||
return -1;
|
||||
} else {
|
||||
int length = (buf[0] >> 5) & 3;
|
||||
int offset = 0;
|
||||
|
||||
for (i=0; i < length; i++) {
|
||||
offset = (offset << 8) | buf[i + 1];
|
||||
}
|
||||
|
||||
if (buf_size < (offset + length + 1) || length == 0)
|
||||
return -1;
|
||||
|
||||
memcpy (&buf[2], &buf[offset + 2], (length - 1));
|
||||
}
|
||||
|
||||
init_get_bits (&s->gb, &buf[2], 8*(buf_size - 2));
|
||||
|
||||
if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3)
|
||||
return -1;
|
||||
|
||||
s->pict_type = golomb_to_pict_type[i];
|
||||
|
||||
/* unknown fields */
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 8);
|
||||
|
||||
s->qscale = get_bits (&s->gb, 5);
|
||||
s->adaptive_quant = get_bits (&s->gb, 1);
|
||||
|
||||
/* unknown fields */
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 2);
|
||||
|
||||
while (get_bits (&s->gb, 1)) {
|
||||
get_bits (&s->gb, 8);
|
||||
}
|
||||
|
||||
/* B-frames are not supported */
|
||||
if (s->pict_type == B_TYPE/* && avctx->hurry_up*/)
|
||||
return buf_size;
|
||||
|
||||
frame_start (h);
|
||||
|
||||
for (s->mb_y=0; s->mb_y < s->mb_height; s->mb_y++) {
|
||||
for (s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
|
||||
int mb_type = svq3_get_ue_golomb (&s->gb);
|
||||
|
||||
if (s->pict_type == I_TYPE) {
|
||||
mb_type += 8;
|
||||
}
|
||||
if (mb_type > 32 || svq3_decode_mb (h, mb_type)) {
|
||||
fprintf (stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (mb_type != 0) {
|
||||
hl_decode_mb (h);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
*(AVFrame *) data = *(AVFrame *) &s->current_picture;
|
||||
*data_size = sizeof(AVFrame);
|
||||
|
||||
MPV_frame_end(s);
|
||||
|
||||
return buf_size;
|
||||
}
|
||||
|
||||
|
||||
AVCodec svq3_decoder = {
|
||||
"svq3",
|
||||
CODEC_TYPE_VIDEO,
|
||||
CODEC_ID_SVQ3,
|
||||
sizeof(H264Context),
|
||||
decode_init,
|
||||
NULL,
|
||||
decode_end,
|
||||
svq3_decode_frame,
|
||||
CODEC_CAP_DR1,
|
||||
};
|
||||
@ -108,6 +108,7 @@ static const CodecTag mov_video_tags[] = {
|
||||
{ CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
|
||||
{ CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
|
||||
{ CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
|
||||
{ CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
|
||||
{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
|
||||
{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
|
||||
/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user