X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fsvq3.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fsvq3.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=8f9f545e77d7b8efdb651cb130e1feee1c9cd75e;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/svq3.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/svq3.c deleted file mode 100644 index 8f9f545..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/svq3.c +++ /dev/null @@ -1,969 +0,0 @@ -/* - * 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. - */ - -#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) ]; - } -} - -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 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 { - svq3_mc_dir (h, s->next_picture.mb_type[mb_xy], PREDICT_MODE, 0, 0); - svq3_mc_dir (h, s->next_picture.mb_type[mb_xy], PREDICT_MODE, 1, 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) { - svq3_mc_dir (h, (mb_type - 1), mode, 0, 0); - } else { /* B_TYPE */ - if (mb_type != 2) { - svq3_mc_dir (h, 0, mode, 0, 0); - } 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) { - svq3_mc_dir (h, 0, mode, 1, (mb_type == 3)); - } 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? */ - fprintf (stderr, "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) - 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) - 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, mb_type; - - *data_size = 0; - - s->flags = avctx->flags; - - 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); - - if (avctx->extradata && avctx->extradata_size >= 0x64 - && !memcmp (avctx->extradata, "SVQ3", 4)) { - - GetBitContext gb; - - init_get_bits (&gb, (uint8_t *) avctx->extradata + 0x62, - 8*(avctx->extradata_size - 0x62)); - - /* '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){ - printf("%c hpel:%d, tpel:%d aqp:%d qp:%d\n", - 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) { - printf ("error in B-frame picture id\n"); - 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)) { - 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); - } - - 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, -};