svq3.c
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上传日期:2021-12-09
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文件大小:32k
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Audio
开发平台:
Visual C++
- /* * Copyright (c) 2003 The FFmpeg Project. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * How to use this decoder: * SVQ3 data is transported within Apple Quicktime files. Quicktime files * have stsd atoms to describe media trak properties. A stsd atom for a * video trak contains 1 or more ImageDescription atoms. These atoms begin * with the 4-byte length of the atom followed by the codec fourcc. Some * decoders need information in this atom to operate correctly. Such * is the case with SVQ3. In order to get the best use out of this decoder, * the calling app must make the SVQ3 ImageDescription atom available * via the AVCodecContext's extradata[_size] field: * * AVCodecContext.extradata = pointer to ImageDescription, first characters * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length * AVCodecContext.extradata_size = size of ImageDescription atom memory * buffer (which will be the same as the ImageDescription atom size field * from the QT file, minus 4 bytes since the length is missing) * * You will know you have these parameters passed correctly when the decoder * correctly decodes this file: * ftp://ftp.mplayerhq.hu/MPlayer/samples/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov * */ /** * @file svq3.c * svq3 decoder. */ //AS by ty
- #include "common.h"
- #include "dsputil.h"
- #include "avcodec.h"
- #include "mpegvideo.h"
- #include "h264data.h"
- #include "golomb.h"
- #include "cabac.h"
- //#include "inttypes.h"
- //#include "dsputil.h"
- //#include "h264data.h"
- //#include "common.h"
- //typedef short DCTELEM;
- //AE by ty
- #define FULLPEL_MODE 1 #define HALFPEL_MODE 2 #define THIRDPEL_MODE 3 #define PREDICT_MODE 4
- /* dual scan (from some older h264 draft) o-->o-->o o | /| o o o / o | / | |/ | o o o o / o-->o-->o-->o */ static const uint8_t svq3_scan[16]={ 0+0*4, 1+0*4, 2+0*4, 2+1*4, 2+2*4, 3+0*4, 3+1*4, 3+2*4, 0+1*4, 0+2*4, 1+1*4, 1+2*4, 0+3*4, 1+3*4, 2+3*4, 3+3*4, }; static const uint8_t svq3_pred_0[25][2] = {
- { 0, 0 },
- { 1, 0 }, { 0, 1 },
- { 0, 2 }, { 1, 1 }, { 2, 0 },
- { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
- { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
- { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
- { 2, 4 }, { 3, 3 }, { 4, 2 },
- { 4, 3 }, { 3, 4 },
- { 4, 4 }
- };
- static const int8_t svq3_pred_1[6][6][5] = {
- { { 2,-1,-1,-1,-1 }, { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 },
- { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 }, { 1, 2,-1,-1,-1 } },
- { { 0, 2,-1,-1,-1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
- { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
- { { 2, 0,-1,-1,-1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
- { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
- { { 2, 0,-1,-1,-1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
- { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
- { { 0, 2,-1,-1,-1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
- { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
- { { 0, 2,-1,-1,-1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
- { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
- };
- static const struct { uint8_t run; uint8_t level; } svq3_dct_tables[2][16] = {
- { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
- { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
- { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
- { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
- };
- static const uint32_t svq3_dequant_coeff[32] = {
- 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
- 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
- 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
- 61694, 68745, 77615, 89113,100253,109366,126635,141533
- };
- static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
- const int qmul= svq3_dequant_coeff[qp];
- #define stride 16
- int i;
- int temp[16];
- static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
- static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
- for(i=0; i<4; i++){
- const int offset= y_offset[i];
- const int z0= 13*(block[offset+stride*0] + block[offset+stride*4]);
- const int z1= 13*(block[offset+stride*0] - block[offset+stride*4]);
- const int z2= 7* block[offset+stride*1] - 17*block[offset+stride*5];
- const int z3= 17* block[offset+stride*1] + 7*block[offset+stride*5];
- temp[4*i+0]= z0+z3;
- temp[4*i+1]= z1+z2;
- temp[4*i+2]= z1-z2;
- temp[4*i+3]= z0-z3;
- }
- for(i=0; i<4; i++){
- const int offset= x_offset[i];
- const int z0= 13*(temp[4*0+i] + temp[4*2+i]);
- const int z1= 13*(temp[4*0+i] - temp[4*2+i]);
- const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
- const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
- block[stride*0 +offset]= ((z0 + z3)*qmul + 0x80000)>>20;
- block[stride*2 +offset]= ((z1 + z2)*qmul + 0x80000)>>20;
- block[stride*8 +offset]= ((z1 - z2)*qmul + 0x80000)>>20;
- block[stride*10+offset]= ((z0 - z3)*qmul + 0x80000)>>20;
- }
- }
- #undef stride
- static void svq3_add_idct_c (uint8_t *dst, DCTELEM *block, int stride, int qp, int dc){
- const int qmul= svq3_dequant_coeff[qp];
- int i;
- uint8_t *cm = cropTbl + MAX_NEG_CROP;
- if (dc) {
- dc = 13*13*((dc == 1) ? 1538*block[0] : ((qmul*(block[0] >> 3)) / 2));
- block[0] = 0;
- }
- for (i=0; i < 4; i++) {
- 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) ];
- }
- }
- //AS by ty
- //#define LOAD_TOP_RIGHT_EDGE
- // const int t4= topright[0];
- // const int t5= topright[1];
- // const int t6= topright[2];
- // const int t7= topright[3];
- //
- //#define LOAD_LEFT_EDGE
- // const int l0= src[-1+0*stride];
- // const int l1= src[-1+1*stride];
- // const int l2= src[-1+2*stride];
- // const int l3= src[-1+3*stride];
- //
- //#define LOAD_TOP_EDGE
- // const int t0= src[ 0-1*stride];
- // const int t1= src[ 1-1*stride];
- // const int t2= src[ 2-1*stride];
- // const int t3= src[ 3-1*stride];
- ////AE by ty
- //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 int unu0= t0;
- //// const __attribute__((unused)) int unu1= l0;
- // const 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 inline void svq3_mc_dir_part (MpegEncContext *s,
- // int x, int y, int width, int height,
- // int mx, int my, int dxy,
- // int thirdpel, int dir, int avg) {
- // const Picture *pic = (dir == 0) ? &s->last_picture : &s->next_picture;
- // uint8_t *src, *dest;
- // int i, emu = 0;
- // int blocksize= 2 - (width>>3); //16->0, 8->1, 4->2
- // mx += x;
- // my += y;
- //
- // if (mx < 0 || mx >= (s->h_edge_pos - width - 1) ||
- // my < 0 || my >= (s->v_edge_pos - height - 1)) {
- // if ((s->flags & CODEC_FLAG_EMU_EDGE)) {
- // emu = 1;
- // }
- // mx = clip (mx, -16, (s->h_edge_pos - width + 15));
- // my = clip (my, -16, (s->v_edge_pos - height + 15));
- // }
- // /* form component predictions */
- // dest = s->current_picture.data[0] + x + y*s->linesize;
- // src = pic->data[0] + mx + my*s->linesize;
- // if (emu) {
- // ff_emulated_edge_mc (s->edge_emu_buffer, src, s->linesize, (width + 1), (height + 1),
- // mx, my, s->h_edge_pos, s->v_edge_pos);
- // src = s->edge_emu_buffer;
- // }
- // if(thirdpel)
- // (avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->linesize, width, height);
- // else
- // (avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->linesize, 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);
- // blocksize++;
- // for (i=1; i < 3; i++) {
- // dest = s->current_picture.data[i] + (x >> 1) + (y >> 1)*s->uvlinesize;
- // src = pic->data[i] + mx + my*s->uvlinesize;
- // if (emu) {
- // ff_emulated_edge_mc (s->edge_emu_buffer, src, s->uvlinesize, (width + 1), (height + 1),
- // mx, my, (s->h_edge_pos >> 1), (s->v_edge_pos >> 1));
- // src = s->edge_emu_buffer;
- // }
- // if(thirdpel)
- // (avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->uvlinesize, width, height);
- // else
- // (avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->uvlinesize, height);
- // }
- // }
- //}
- //static inline int svq3_mc_dir (H264Context *h, int size, int mode, int dir, int avg) {
- // int i, j, k, mx, my, dx, dy, x, y;
- // MpegEncContext *const s = (MpegEncContext *) h;
- // const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
- // const int part_height = 16 >> ((unsigned) (size + 1) / 3);
- // const int extra_width = (mode == PREDICT_MODE) ? -16*6 : 0;
- // const int h_edge_pos = 6*(s->h_edge_pos - part_width ) - extra_width;
- // const int v_edge_pos = 6*(s->v_edge_pos - part_height) - extra_width;
- // for (i=0; i < 16; i+=part_height) {
- // for (j=0; j < 16; j+=part_width) {
- // const int b_xy = (4*s->mb_x+(j>>2)) + (4*s->mb_y+(i>>2))*h->b_stride;
- // int dxy;
- // x = 16*s->mb_x + j;
- // y = 16*s->mb_y + i;
- // k = ((j>>2)&1) + ((i>>1)&2) + ((j>>1)&4) + (i&8);
- // if (mode != PREDICT_MODE) {
- // pred_motion (h, k, (part_width >> 2), dir, 1, &mx, &my);
- // } else {
- // mx = s->next_picture.motion_val[0][b_xy][0]<<1;
- // my = s->next_picture.motion_val[0][b_xy][1]<<1;
- // if (dir == 0) {
- // mx = ((mx * h->frame_num_offset) / h->prev_frame_num_offset + 1)>>1;
- // my = ((my * h->frame_num_offset) / h->prev_frame_num_offset + 1)>>1;
- // } else {
- // mx = ((mx * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1)>>1;
- // my = ((my * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1)>>1;
- // }
- // }
- // /* clip motion vector prediction to frame border */
- // mx = clip (mx, extra_width - 6*x, h_edge_pos - 6*x);
- // my = clip (my, extra_width - 6*y, v_edge_pos - 6*y);
- // /* get (optional) motion vector differential */
- // if (mode == PREDICT_MODE) {
- // dx = dy = 0;
- // } else {
- // 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 == THIRDPEL_MODE) {
- // int fx, fy;
- // mx = ((mx + 1)>>1) + dx;
- // my = ((my + 1)>>1) + dy;
- // fx= ((unsigned)(mx + 0x3000))/3 - 0x1000;
- // fy= ((unsigned)(my + 0x3000))/3 - 0x1000;
- // dxy= (mx - 3*fx) + 4*(my - 3*fy);
- // svq3_mc_dir_part (s, x, y, part_width, part_height, fx, fy, dxy, 1, dir, avg);
- // mx += mx;
- // my += my;
- // } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
- // mx = ((unsigned)(mx + 1 + 0x3000))/3 + dx - 0x1000;
- // my = ((unsigned)(my + 1 + 0x3000))/3 + dy - 0x1000;
- // dxy= (mx&1) + 2*(my&1);
- // svq3_mc_dir_part (s, x, y, part_width, part_height, mx>>1, my>>1, dxy, 0, dir, avg);
- // mx *= 3;
- // my *= 3;
- // } else {
- // mx = ((unsigned)(mx + 3 + 0x6000))/6 + dx - 0x1000;
- // my = ((unsigned)(my + 3 + 0x6000))/6 + dy - 0x1000;
- // svq3_mc_dir_part (s, x, y, part_width, part_height, mx, my, 0, 0, dir, avg);
- // mx *= 6;
- // my *= 6;
- // }
- // /* update mv_cache */
- // if (mode != PREDICT_MODE) {
- // int32_t mv = pack16to32(mx,my);
- // if (part_height == 8 && i < 8) {
- // *(int32_t *) h->mv_cache[dir][scan8[k] + 1*8] = mv;
- // if (part_width == 8 && j < 8) {
- // *(int32_t *) h->mv_cache[dir][scan8[k] + 1 + 1*8] = mv;
- // }
- // }
- // if (part_width == 8 && j < 8) {
- // *(int32_t *) h->mv_cache[dir][scan8[k] + 1] = mv;
- // }
- // if (part_width == 4 || part_height == 4) {
- // *(int32_t *) h->mv_cache[dir][scan8[k]] = mv;
- // }
- // }
- // /* write back motion vectors */
- // fill_rectangle(s->current_picture.motion_val[dir][b_xy], part_width>>2, part_height>>2, h->b_stride, pack16to32(mx,my), 4);
- // }
- // }
- // return 0;
- //}
- //static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
- // int i, j, k, m, dir, mode;
- // int cbp = 0;
- // 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 */
- // if (s->pict_type == P_TYPE || s->next_picture.mb_type[mb_xy] == -1) {
- // svq3_mc_dir_part (s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 0, 0);
- // if (s->pict_type == B_TYPE) {
- // svq3_mc_dir_part (s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 1, 1);
- // }
- // mb_type = MB_TYPE_SKIP;
- // } else {
- // mb_type= FFMIN(s->next_picture.mb_type[mb_xy], 6);
- // if(svq3_mc_dir (h, mb_type, PREDICT_MODE, 0, 0) < 0)
- // return -1;
- // if(svq3_mc_dir (h, mb_type, PREDICT_MODE, 1, 1) < 0)
- // return -1;
- // mb_type = MB_TYPE_16x16;
- // }
- // } else if (mb_type < 8) { /* INTER */
- // if (h->thirdpel_flag && h->halfpel_flag == !get_bits (&s->gb, 1)) {
- // mode = THIRDPEL_MODE;
- // } else if (h->halfpel_flag && h->thirdpel_flag == !get_bits (&s->gb, 1)) {
- // mode = HALFPEL_MODE;
- // } else {
- // mode = FULLPEL_MODE;
- // }
- // /* fill caches */
- // /* note ref_cache should contain here:
- // ????????
- // ???11111
- // N??11111
- // N??11111
- // N??11111
- // N
- // */
- //
- // for (m=0; m < 2; m++) {
- // if (s->mb_x > 0 && h->intra4x4_pred_mode[mb_xy - 1][0] != -1) {
- // for (i=0; i < 4; i++) {
- // *(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - 1 + i*h->b_stride];
- // }
- // } else {
- // for (i=0; i < 4; i++) {
- // *(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = 0;
- // }
- // }
- // if (s->mb_y > 0) {
- // memcpy (h->mv_cache[m][scan8[0] - 1*8], s->current_picture.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
- // memset (&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[mb_xy - s->mb_stride][4] == -1) ? PART_NOT_AVAILABLE : 1, 4);
- // if (s->mb_x < (s->mb_width - 1)) {
- // *(uint32_t *) h->mv_cache[m][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride + 4];
- // h->ref_cache[m][scan8[0] + 4 - 1*8] =
- // (h->intra4x4_pred_mode[mb_xy - s->mb_stride + 1][0] == -1 ||
- // h->intra4x4_pred_mode[mb_xy - s->mb_stride][4] == -1) ? PART_NOT_AVAILABLE : 1;
- // }else
- // h->ref_cache[m][scan8[0] + 4 - 1*8] = PART_NOT_AVAILABLE;
- // if (s->mb_x > 0) {
- // *(uint32_t *) h->mv_cache[m][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride - 1];
- // h->ref_cache[m][scan8[0] - 1 - 1*8] = (h->intra4x4_pred_mode[mb_xy - s->mb_stride - 1][3] == -1) ? PART_NOT_AVAILABLE : 1;
- // }else
- // h->ref_cache[m][scan8[0] - 1 - 1*8] = PART_NOT_AVAILABLE;
- // }else
- // memset (&h->ref_cache[m][scan8[0] - 1*8 - 1], PART_NOT_AVAILABLE, 8);
- // if (s->pict_type != B_TYPE)
- // break;
- // }
- // /* decode motion vector(s) and form prediction(s) */
- // if (s->pict_type == P_TYPE) {
- // if(svq3_mc_dir (h, (mb_type - 1), mode, 0, 0) < 0)
- // return -1;
- // } else { /* B_TYPE */
- // if (mb_type != 2) {
- // if(svq3_mc_dir (h, 0, mode, 0, 0) < 0)
- // return -1;
- // } else {
- // 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 (mb_type != 1) {
- // if(svq3_mc_dir (h, 0, mode, 1, (mb_type == 3)) < 0)
- // return -1;
- // } else {
- // for (i=0; i < 4; i++) {
- // memset (s->current_picture.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
- // }
- // }
- // }
- // mb_type = MB_TYPE_16x16;
- // } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
- // memset (h->intra4x4_pred_mode_cache, -1, 8*5*sizeof(int8_t));
- // if (mb_type == 8) {
- // 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 (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) {
- // h->left_samples_available = 0x5F5F;
- // }
- // }
- // 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];
- // if (h->intra4x4_pred_mode_cache[4+8*0] == -1) {
- // h->top_samples_available = 0x33FF;
- // }
- // }
- // /* 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;
- // }
- // } else { /* mb_type == 33, DC_128_PRED block type */
- // for (i=0; i < 4; i++) {
- // memset (&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_PRED, 4);
- // }
- // }
- // write_back_intra_pred_mode (h);
- // if (mb_type == 8) {
- // check_intra4x4_pred_mode (h);
- // h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
- // h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
- // } else {
- // for (i=0; i < 4; i++) {
- // memset (&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_128_PRED, 4);
- // }
- // h->top_samples_available = 0x33FF;
- // h->left_samples_available = 0x5F5F;
- // }
- // 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 (s->pict_type == B_TYPE) {
- // for (i=0; i < 4; i++) {
- // memset (s->current_picture.motion_val[1][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) || s->pict_type == B_TYPE) {
- // memset (h->non_zero_count_cache + 8, 0, 4*9*sizeof(uint8_t));
- // s->dsp.clear_blocks(h->mb);
- // }
- // if (!IS_INTRA16x16(mb_type) && (!IS_SKIP(mb_type) || s->pict_type == B_TYPE)) {
- // if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
- // return -1;
- // cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] : golomb_to_inter_cbp[vlc];
- // }
- // 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 (cbp) {
- // const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
- // const int type = ((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 = index ? ((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], index, type))
- // 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_slice_header (H264Context *h) {
- // MpegEncContext *const s = (MpegEncContext *) h;
- // const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
- // int i, header;
- // header = get_bits (&s->gb, 8);
- // if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
- // /* TODO: what? */
- // av_log(h->s.avctx, AV_LOG_ERROR, "unsupported slice header (%02X)n", header);
- // return -1;
- // } else {
- // int length = (header >> 5) & 3;
- // h->next_slice_index = s->gb.index + 8*show_bits (&s->gb, 8*length) + 8*length;
- // if (h->next_slice_index > s->gb.size_in_bits){
- // av_log(h->s.avctx, AV_LOG_ERROR, "slice after bitstream endn");
- // return -1;
- // }
- // s->gb.size_in_bits = h->next_slice_index - 8*(length - 1);
- // s->gb.index += 8;
- // if (length > 0) {
- // memcpy ((uint8_t *) &s->gb.buffer[s->gb.index >> 3],
- // &s->gb.buffer[s->gb.size_in_bits >> 3], (length - 1));
- // }
- // }
- // if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3){
- // av_log(h->s.avctx, AV_LOG_ERROR, "illegal slice type %d n", i);
- // return -1;
- // }
- // h->slice_type = golomb_to_pict_type[i];
- // if ((header & 0x9F) == 2) {
- // i = (s->mb_num < 64) ? 6 : (1 + av_log2 (s->mb_num - 1));
- // s->mb_skip_run = get_bits (&s->gb, i) - (s->mb_x + (s->mb_y * s->mb_width));
- // } else {
- // get_bits1 (&s->gb);
- // s->mb_skip_run = 0;
- // }
- // h->slice_num = get_bits (&s->gb, 8);
- // s->qscale = get_bits (&s->gb, 5);
- // s->adaptive_quant = get_bits1 (&s->gb);
- // /* unknown fields */
- // get_bits1 (&s->gb);
- // if (h->unknown_svq3_flag) {
- // get_bits1 (&s->gb);
- // }
- // get_bits1 (&s->gb);
- // get_bits (&s->gb, 2);
- // while (get_bits1 (&s->gb)) {
- // get_bits (&s->gb, 8);
- // }
- // /* reset intra predictors and invalidate motion vector references */
- // if (s->mb_x > 0) {
- // memset (h->intra4x4_pred_mode[mb_xy - 1], -1, 4*sizeof(int8_t));
- // memset (h->intra4x4_pred_mode[mb_xy - s->mb_x], -1, 8*sizeof(int8_t)*s->mb_x);
- // }
- // if (s->mb_y > 0) {
- // memset (h->intra4x4_pred_mode[mb_xy - s->mb_stride], -1, 8*sizeof(int8_t)*(s->mb_width - s->mb_x));
- // if (s->mb_x > 0) {
- // h->intra4x4_pred_mode[mb_xy - s->mb_stride - 1][3] = -1;
- // }
- // }
- // 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 m;
- // int mb_type;
- // unsigned char *extradata;
- // unsigned int size;
- // s->flags = avctx->flags;
- // s->flags2 = avctx->flags2;
- // s->unrestricted_mv = 1;
- // if (!s->context_initialized) {
- // s->width = avctx->width;
- // s->height = avctx->height;
- // 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->unknown_svq3_flag = 0;
- // h->chroma_qp = 4;
- // if (MPV_common_init (s) < 0)
- // return -1;
- // h->b_stride = 4*s->mb_width;
- // alloc_tables (h);
- // /* prowl for the "SEQH" marker in the extradata */
- // extradata = (unsigned char *)avctx->extradata;
- // for (m = 0; m < avctx->extradata_size; m++) {
- // if (!memcmp (extradata, "SEQH", 4))
- // break;
- // extradata++;
- // }
- // /* if a match was found, parse the extra data */
- // if (!memcmp (extradata, "SEQH", 4)) {
- // GetBitContext gb;
- // size = BE_32(&extradata[4]);
- // init_get_bits (&gb, extradata + 8, size);
- // /* 'frame size code' and optional 'width, height' */
- // if (get_bits (&gb, 3) == 7) {
- // get_bits (&gb, 12);
- // get_bits (&gb, 12);
- // }
- // h->halfpel_flag = get_bits1 (&gb);
- // h->thirdpel_flag = get_bits1 (&gb);
- // /* unknown fields */
- // get_bits1 (&gb);
- // get_bits1 (&gb);
- // get_bits1 (&gb);
- // get_bits1 (&gb);
- // s->low_delay = get_bits1 (&gb);
- // /* unknown field */
- // get_bits1 (&gb);
- // while (get_bits1 (&gb)) {
- // get_bits (&gb, 8);
- // }
- // h->unknown_svq3_flag = get_bits1 (&gb);
- // avctx->has_b_frames = !s->low_delay;
- // }
- // }
- // /* special case for last picture */
- // if (buf_size == 0) {
- // if (s->next_picture_ptr && !s->low_delay) {
- // *(AVFrame *) data = *(AVFrame *) &s->next_picture;
- // *data_size = sizeof(AVFrame);
- // }
- // return 0;
- // }
- // init_get_bits (&s->gb, buf, 8*buf_size);
- // s->mb_x = s->mb_y = 0;
- // if (svq3_decode_slice_header (h))
- // return -1;
- // s->pict_type = h->slice_type;
- // s->picture_number = h->slice_num;
- // if(avctx->debug&FF_DEBUG_PICT_INFO){
- // av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%dn",
- // av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,
- // s->adaptive_quant, s->qscale
- // );
- // }
- // /* for hurry_up==5 */
- // s->current_picture.pict_type = s->pict_type;
- // s->current_picture.key_frame = (s->pict_type == I_TYPE);
- // /* skip b frames if we dont have reference frames */
- // if (s->last_picture_ptr == NULL && s->pict_type == B_TYPE) return 0;
- // /* skip b frames if we are in a hurry */
- // if (avctx->hurry_up && s->pict_type == B_TYPE) return 0;
- // /* skip everything if we are in a hurry >= 5 */
- // if (avctx->hurry_up >= 5) return 0;
- // if (s->next_p_frame_damaged) {
- // if (s->pict_type == B_TYPE)
- // return 0;
- // else
- // s->next_p_frame_damaged = 0;
- // }
- // frame_start (h);
- // if (s->pict_type == B_TYPE) {
- // h->frame_num_offset = (h->slice_num - h->prev_frame_num);
- // if (h->frame_num_offset < 0) {
- // h->frame_num_offset += 256;
- // }
- // if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {
- // av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture idn");
- // return -1;
- // }
- // } else {
- // h->prev_frame_num = h->frame_num;
- // h->frame_num = h->slice_num;
- // h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);
- // if (h->prev_frame_num_offset < 0) {
- // h->prev_frame_num_offset += 256;
- // }
- // }
- // for(m=0; m<2; m++){
- // int i;
- // for(i=0; i<4; i++){
- // int j;
- // for(j=-1; j<4; j++)
- // h->ref_cache[m][scan8[0] + 8*i + j]= 1;
- // h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;
- // }
- // }
- //
- // 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++) {
- // if ( (s->gb.index + 7) >= s->gb.size_in_bits &&
- // ((s->gb.index & 7) == 0 || show_bits (&s->gb, (-s->gb.index & 7)) == 0)) {
- // s->gb.index = h->next_slice_index;
- // s->gb.size_in_bits = 8*buf_size;
- // if (svq3_decode_slice_header (h))
- // return -1;
- // /* TODO: support s->mb_skip_run */
- // }
- // mb_type = svq3_get_ue_golomb (&s->gb);
- // if (s->pict_type == I_TYPE) {
- // mb_type += 8;
- // } else if (s->pict_type == B_TYPE && mb_type >= 4) {
- // mb_type += 4;
- // }
- // if (mb_type > 33 || svq3_decode_mb (h, mb_type)) {
- // av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %dn", s->mb_x, s->mb_y);
- // return -1;
- // }
- // if (mb_type != 0) {
- // hl_decode_mb (h);
- // }
- // if (s->pict_type != B_TYPE && !s->low_delay) {
- // s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
- // (s->pict_type == P_TYPE && mb_type < 8) ? (mb_type - 1) : -1;
- // }
- // }
- // ff_draw_horiz_band(s, 16*s->mb_y, 16);
- // }
- // MPV_frame_end(s);
- // if (s->pict_type == B_TYPE || s->low_delay) {
- // *(AVFrame *) data = *(AVFrame *) &s->current_picture;
- // } else {
- // *(AVFrame *) data = *(AVFrame *) &s->last_picture;
- // }
- // avctx->frame_number = s->picture_number - 1;
- // /* dont output the last pic after seeking */
- // if (s->last_picture_ptr || s->low_delay) {
- // *data_size = sizeof(AVFrame);
- // }
- // 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_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- //};