| /* |
| * Copyright (c) 2003 The FFmpeg Project |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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: |
| * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov |
| */ |
| |
| #if CONFIG_ZLIB |
| #include <zlib.h> |
| #endif |
| |
| #include "svq1.h" |
| |
| /** |
| * @file libavcodec/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 = ff_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 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 < 0) |
| 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 < 16U) { |
| 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 = av_clip (mx, -16, (s->h_edge_pos - width + 15)); |
| my = av_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 = av_clip(mx, extra_width - 6*x, h_edge_pos - 6*x); |
| my = av_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) { |
| av_log(h->s.avctx, AV_LOG_ERROR, "invalid MV vlc\n"); |
| 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 = h->mb_xy; |
| 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 == FF_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 == FF_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_bits1 (&s->gb)) { |
| mode = THIRDPEL_MODE; |
| } else if (h->halfpel_flag && h->thirdpel_flag == !get_bits1 (&s->gb)) { |
| mode = HALFPEL_MODE; |
| } else { |
| mode = FULLPEL_MODE; |
| } |
| |
| /* fill caches */ |
| /* note ref_cache should contain here: |
| ???????? |
| ???11111 |
| N??11111 |
| N??11111 |
| N??11111 |
| */ |
| |
| 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 != FF_B_TYPE) |
| break; |
| } |
| |
| /* decode motion vector(s) and form prediction(s) */ |
| if (s->pict_type == FF_P_TYPE) { |
| if (svq3_mc_dir(h, (mb_type - 1), mode, 0, 0) < 0) |
| return -1; |
| } else { /* FF_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 >= 25U){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc); |
| 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){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "weird prediction\n"); |
| 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){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n"); |
| return -1; |
| } |
| |
| cbp = i_mb_type_info[mb_type - 8].cbp; |
| mb_type = MB_TYPE_INTRA16x16; |
| } |
| |
| if (!IS_INTER(mb_type) && s->pict_type != FF_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 == FF_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 == FF_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 == FF_B_TYPE)) { |
| if ((vlc = svq3_get_ue_golomb(&s->gb)) >= 48U){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc); |
| 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 != FF_I_TYPE && s->adaptive_quant && cbp)) { |
| s->qscale += svq3_get_se_golomb(&s->gb); |
| |
| if (s->qscale > 31U){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale); |
| return -1; |
| } |
| } |
| if (IS_INTRA16x16(mb_type)) { |
| if (svq3_decode_block(&s->gb, h->mb, 0, 0)){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding intra luma dc\n"); |
| 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)){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding block\n"); |
| 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)){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma dc block\n"); |
| 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)){ |
| av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma ac block\n"); |
| return -1; |
| } |
| } |
| } |
| } |
| } |
| |
| h->cbp= cbp; |
| 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 = h->mb_xy; |
| 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 = get_bits_count(&s->gb) + 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 end\n"); |
| return -1; |
| } |
| |
| s->gb.size_in_bits = h->next_slice_index - 8*(length - 1); |
| skip_bits(&s->gb, 8); |
| |
| if (h->svq3_watermark_key) { |
| uint32_t header = AV_RL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1]); |
| AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1], header ^ h->svq3_watermark_key); |
| } |
| if (length > 0) { |
| memcpy((uint8_t *) &s->gb.buffer[get_bits_count(&s->gb) >> 3], |
| &s->gb.buffer[s->gb.size_in_bits >> 3], (length - 1)); |
| } |
| skip_bits_long(&s->gb, 0); |
| } |
| |
| if ((i = svq3_get_ue_golomb(&s->gb)) >= 3U){ |
| 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 { |
| skip_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 */ |
| skip_bits1(&s->gb); |
| |
| if (h->unknown_svq3_flag) { |
| skip_bits1(&s->gb); |
| } |
| |
| skip_bits1(&s->gb); |
| skip_bits(&s->gb, 2); |
| |
| while (get_bits1(&s->gb)) { |
| skip_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 av_cold int svq3_decode_init(AVCodecContext *avctx) |
| { |
| MpegEncContext *const s = avctx->priv_data; |
| H264Context *const h = avctx->priv_data; |
| int m; |
| unsigned char *extradata; |
| unsigned int size; |
| |
| if (decode_init(avctx) < 0) |
| return -1; |
| |
| s->flags = avctx->flags; |
| s->flags2 = avctx->flags2; |
| s->unrestricted_mv = 1; |
| h->is_complex=1; |
| |
| if (!s->context_initialized) { |
| s->width = avctx->width; |
| s->height = avctx->height; |
| h->halfpel_flag = 1; |
| h->thirdpel_flag = 1; |
| h->unknown_svq3_flag = 0; |
| h->chroma_qp[0] = h->chroma_qp[1] = 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 (extradata && !memcmp(extradata, "SEQH", 4)) { |
| |
| GetBitContext gb; |
| |
| size = AV_RB32(&extradata[4]); |
| init_get_bits(&gb, extradata + 8, size*8); |
| |
| /* 'frame size code' and optional 'width, height' */ |
| if (get_bits(&gb, 3) == 7) { |
| skip_bits(&gb, 12); |
| skip_bits(&gb, 12); |
| } |
| |
| h->halfpel_flag = get_bits1(&gb); |
| h->thirdpel_flag = get_bits1(&gb); |
| |
| /* unknown fields */ |
| skip_bits1(&gb); |
| skip_bits1(&gb); |
| skip_bits1(&gb); |
| skip_bits1(&gb); |
| |
| s->low_delay = get_bits1(&gb); |
| |
| /* unknown field */ |
| skip_bits1(&gb); |
| |
| while (get_bits1(&gb)) { |
| skip_bits(&gb, 8); |
| } |
| |
| h->unknown_svq3_flag = get_bits1(&gb); |
| avctx->has_b_frames = !s->low_delay; |
| if (h->unknown_svq3_flag) { |
| #if CONFIG_ZLIB |
| unsigned watermark_width = svq3_get_ue_golomb(&gb); |
| unsigned watermark_height = svq3_get_ue_golomb(&gb); |
| int u1 = svq3_get_ue_golomb(&gb); |
| int u2 = get_bits(&gb, 8); |
| int u3 = get_bits(&gb, 2); |
| int u4 = svq3_get_ue_golomb(&gb); |
| unsigned buf_len = watermark_width*watermark_height*4; |
| int offset = (get_bits_count(&gb)+7)>>3; |
| uint8_t *buf; |
| |
| if ((uint64_t)watermark_width*4 > UINT_MAX/watermark_height) |
| return -1; |
| |
| buf = av_malloc(buf_len); |
| av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n", watermark_width, watermark_height); |
| av_log(avctx, AV_LOG_DEBUG, "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", u1, u2, u3, u4, offset); |
| if (uncompress(buf, (uLong*)&buf_len, extradata + 8 + offset, size - offset) != Z_OK) { |
| av_log(avctx, AV_LOG_ERROR, "could not uncompress watermark logo\n"); |
| av_free(buf); |
| return -1; |
| } |
| h->svq3_watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); |
| h->svq3_watermark_key = h->svq3_watermark_key << 16 | h->svq3_watermark_key; |
| av_log(avctx, AV_LOG_DEBUG, "watermark key %#x\n", h->svq3_watermark_key); |
| av_free(buf); |
| #else |
| av_log(avctx, AV_LOG_ERROR, "this svq3 file contains watermark which need zlib support compiled in\n"); |
| return -1; |
| #endif |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int svq3_decode_frame(AVCodecContext *avctx, |
| void *data, int *data_size, |
| const uint8_t *buf, int buf_size) |
| { |
| MpegEncContext *const s = avctx->priv_data; |
| H264Context *const h = avctx->priv_data; |
| int m, mb_type; |
| |
| /* special case for last picture */ |
| if (buf_size == 0) { |
| if (s->next_picture_ptr && !s->low_delay) { |
| *(AVFrame *) data = *(AVFrame *) &s->next_picture; |
| s->next_picture_ptr = NULL; |
| *data_size = sizeof(AVFrame); |
| } |
| return 0; |
| } |
| |
| init_get_bits (&s->gb, buf, 8*buf_size); |
| |
| s->mb_x = s->mb_y = h->mb_xy = 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:%d, slice_num:%02X\n", |
| av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag, |
| s->adaptive_quant, s->qscale, h->slice_num); |
| } |
| |
| /* for hurry_up == 5 */ |
| s->current_picture.pict_type = s->pict_type; |
| s->current_picture.key_frame = (s->pict_type == FF_I_TYPE); |
| |
| /* Skip B-frames if we do not have reference frames. */ |
| if (s->last_picture_ptr == NULL && s->pict_type == FF_B_TYPE) |
| return 0; |
| /* Skip B-frames if we are in a hurry. */ |
| if (avctx->hurry_up && s->pict_type == FF_B_TYPE) |
| return 0; |
| /* Skip everything if we are in a hurry >= 5. */ |
| if (avctx->hurry_up >= 5) |
| return 0; |
| if ( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE) |
| ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE) |
| || avctx->skip_frame >= AVDISCARD_ALL) |
| return 0; |
| |
| if (s->next_p_frame_damaged) { |
| if (s->pict_type == FF_B_TYPE) |
| return 0; |
| else |
| s->next_p_frame_damaged = 0; |
| } |
| |
| if (frame_start(h) < 0) |
| return -1; |
| |
| if (s->pict_type == FF_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 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; |
| if (i < 3) |
| 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++) { |
| h->mb_xy = s->mb_x + s->mb_y*s->mb_stride; |
| |
| if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits && |
| ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) { |
| |
| skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb)); |
| 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 == FF_I_TYPE) { |
| mb_type += 8; |
| } else if (s->pict_type == FF_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 %d\n", s->mb_x, s->mb_y); |
| return -1; |
| } |
| |
| if (mb_type != 0) { |
| hl_decode_mb (h); |
| } |
| |
| if (s->pict_type != FF_B_TYPE && !s->low_delay) { |
| s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] = |
| (s->pict_type == FF_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 == FF_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; |
| |
| /* Do not 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), |
| svq3_decode_init, |
| NULL, |
| decode_end, |
| svq3_decode_frame, |
| CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_DELAY, |
| .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3"), |
| .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_NONE}, |
| }; |