| /* |
| * 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 |
| */ |
| |
| #include <inttypes.h> |
| |
| #include "libavutil/attributes.h" |
| #include "internal.h" |
| #include "avcodec.h" |
| #include "mpegutils.h" |
| #include "h264.h" |
| |
| #include "h264data.h" // FIXME FIXME FIXME |
| |
| #include "h264_mvpred.h" |
| #include "golomb.h" |
| #include "hpeldsp.h" |
| #include "rectangle.h" |
| #include "tpeldsp.h" |
| #include "vdpau_internal.h" |
| |
| #if CONFIG_ZLIB |
| #include <zlib.h> |
| #endif |
| |
| #include "svq1.h" |
| #include "svq3.h" |
| |
| /** |
| * @file |
| * svq3 decoder. |
| */ |
| |
| typedef struct SVQ3Context { |
| H264Context h; |
| HpelDSPContext hdsp; |
| TpelDSPContext tdsp; |
| H264Picture *cur_pic; |
| H264Picture *next_pic; |
| H264Picture *last_pic; |
| int halfpel_flag; |
| int thirdpel_flag; |
| int has_watermark; |
| int next_slice_index; |
| uint32_t watermark_key; |
| uint8_t *buf; |
| int buf_size; |
| int adaptive_quant; |
| int next_p_frame_damaged; |
| int h_edge_pos; |
| int v_edge_pos; |
| int last_frame_output; |
| } SVQ3Context; |
| |
| #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 luma_dc_zigzag_scan[16] = { |
| 0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64, |
| 3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64, |
| 1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64, |
| 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64, |
| }; |
| |
| 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 int svq3_decode_end(AVCodecContext *avctx); |
| |
| void ff_svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp) |
| { |
| const int qmul = svq3_dequant_coeff[qp]; |
| #define stride 16 |
| int i; |
| int temp[16]; |
| static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride }; |
| |
| for (i = 0; i < 4; i++) { |
| const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]); |
| const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]); |
| const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3]; |
| const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3]; |
| |
| 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]; |
| |
| output[stride * 0 + offset] = (z0 + z3) * qmul + 0x80000 >> 20; |
| output[stride * 2 + offset] = (z1 + z2) * qmul + 0x80000 >> 20; |
| output[stride * 8 + offset] = (z1 - z2) * qmul + 0x80000 >> 20; |
| output[stride * 10 + offset] = (z0 - z3) * qmul + 0x80000 >> 20; |
| } |
| } |
| #undef stride |
| |
| void ff_svq3_add_idct_c(uint8_t *dst, int16_t *block, |
| int stride, int qp, int dc) |
| { |
| const int qmul = svq3_dequant_coeff[qp]; |
| int i; |
| |
| 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] = av_clip_uint8(dst[i + stride * 0] + ((z0 + z3) * qmul + rr >> 20)); |
| dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((z1 + z2) * qmul + rr >> 20)); |
| dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((z1 - z2) * qmul + rr >> 20)); |
| dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((z0 - z3) * qmul + rr >> 20)); |
| } |
| |
| memset(block, 0, 16 * sizeof(int16_t)); |
| } |
| |
| static inline int svq3_decode_block(GetBitContext *gb, int16_t *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, limit; |
| unsigned vlc; |
| 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 ((int32_t)vlc < 0) |
| return -1; |
| |
| sign = (vlc & 1) ? 0 : -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(SVQ3Context *s, |
| int x, int y, int width, int height, |
| int mx, int my, int dxy, |
| int thirdpel, int dir, int avg) |
| { |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| const H264Picture *pic = (dir == 0) ? s->last_pic : s->next_pic; |
| 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) { |
| 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 = h->cur_pic.f->data[0] + x + y * sl->linesize; |
| src = pic->f->data[0] + mx + my * sl->linesize; |
| |
| if (emu) { |
| h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src, |
| sl->linesize, sl->linesize, |
| width + 1, height + 1, |
| mx, my, s->h_edge_pos, s->v_edge_pos); |
| src = sl->edge_emu_buffer; |
| } |
| if (thirdpel) |
| (avg ? s->tdsp.avg_tpel_pixels_tab |
| : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, sl->linesize, |
| width, height); |
| else |
| (avg ? s->hdsp.avg_pixels_tab |
| : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, sl->linesize, |
| height); |
| |
| if (!(h->flags & AV_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 = h->cur_pic.f->data[i] + (x >> 1) + (y >> 1) * sl->uvlinesize; |
| src = pic->f->data[i] + mx + my * sl->uvlinesize; |
| |
| if (emu) { |
| h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src, |
| sl->uvlinesize, sl->uvlinesize, |
| width + 1, height + 1, |
| mx, my, (s->h_edge_pos >> 1), |
| s->v_edge_pos >> 1); |
| src = sl->edge_emu_buffer; |
| } |
| if (thirdpel) |
| (avg ? s->tdsp.avg_tpel_pixels_tab |
| : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, |
| sl->uvlinesize, |
| width, height); |
| else |
| (avg ? s->hdsp.avg_pixels_tab |
| : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, |
| sl->uvlinesize, |
| height); |
| } |
| } |
| } |
| |
| static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode, |
| int dir, int avg) |
| { |
| int i, j, k, mx, my, dx, dy, x, y; |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| 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 * sl->mb_x + (j >> 2)) + |
| (4 * sl->mb_y + (i >> 2)) * h->b_stride; |
| int dxy; |
| x = 16 * sl->mb_x + j; |
| y = 16 * sl->mb_y + i; |
| k = (j >> 2 & 1) + (i >> 1 & 2) + |
| (j >> 1 & 4) + (i & 8); |
| |
| if (mode != PREDICT_MODE) { |
| pred_motion(h, sl, k, part_width >> 2, dir, 1, &mx, &my); |
| } else { |
| mx = s->next_pic->motion_val[0][b_xy][0] << 1; |
| my = s->next_pic->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(&h->gb); |
| dx = svq3_get_se_golomb(&h->gb); |
| |
| if (dx == INVALID_VLC || dy == INVALID_VLC) { |
| av_log(h->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) { |
| AV_WN32A(sl->mv_cache[dir][scan8[k] + 1 * 8], mv); |
| |
| if (part_width == 8 && j < 8) |
| AV_WN32A(sl->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv); |
| } |
| if (part_width == 8 && j < 8) |
| AV_WN32A(sl->mv_cache[dir][scan8[k] + 1], mv); |
| if (part_width == 4 || part_height == 4) |
| AV_WN32A(sl->mv_cache[dir][scan8[k]], mv); |
| } |
| |
| /* write back motion vectors */ |
| fill_rectangle(h->cur_pic.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(SVQ3Context *s, unsigned int mb_type) |
| { |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| int i, j, k, m, dir, mode; |
| int cbp = 0; |
| uint32_t vlc; |
| int8_t *top, *left; |
| const int mb_xy = sl->mb_xy; |
| const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; |
| |
| sl->top_samples_available = (sl->mb_y == 0) ? 0x33FF : 0xFFFF; |
| sl->left_samples_available = (sl->mb_x == 0) ? 0x5F5F : 0xFFFF; |
| sl->topright_samples_available = 0xFFFF; |
| |
| if (mb_type == 0) { /* SKIP */ |
| if (h->pict_type == AV_PICTURE_TYPE_P || |
| s->next_pic->mb_type[mb_xy] == -1) { |
| svq3_mc_dir_part(s, 16 * sl->mb_x, 16 * sl->mb_y, 16, 16, |
| 0, 0, 0, 0, 0, 0); |
| |
| if (h->pict_type == AV_PICTURE_TYPE_B) |
| svq3_mc_dir_part(s, 16 * sl->mb_x, 16 * sl->mb_y, 16, 16, |
| 0, 0, 0, 0, 1, 1); |
| |
| mb_type = MB_TYPE_SKIP; |
| } else { |
| mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6); |
| if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0) |
| return -1; |
| if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0) |
| return -1; |
| |
| mb_type = MB_TYPE_16x16; |
| } |
| } else if (mb_type < 8) { /* INTER */ |
| if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&h->gb)) |
| mode = THIRDPEL_MODE; |
| else if (s->halfpel_flag && |
| s->thirdpel_flag == !get_bits1(&h->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 (sl->mb_x > 0 && sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6] != -1) { |
| for (i = 0; i < 4; i++) |
| AV_COPY32(sl->mv_cache[m][scan8[0] - 1 + i * 8], |
| h->cur_pic.motion_val[m][b_xy - 1 + i * h->b_stride]); |
| } else { |
| for (i = 0; i < 4; i++) |
| AV_ZERO32(sl->mv_cache[m][scan8[0] - 1 + i * 8]); |
| } |
| if (sl->mb_y > 0) { |
| memcpy(sl->mv_cache[m][scan8[0] - 1 * 8], |
| h->cur_pic.motion_val[m][b_xy - h->b_stride], |
| 4 * 2 * sizeof(int16_t)); |
| memset(&sl->ref_cache[m][scan8[0] - 1 * 8], |
| (sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4); |
| |
| if (sl->mb_x < h->mb_width - 1) { |
| AV_COPY32(sl->mv_cache[m][scan8[0] + 4 - 1 * 8], |
| h->cur_pic.motion_val[m][b_xy - h->b_stride + 4]); |
| sl->ref_cache[m][scan8[0] + 4 - 1 * 8] = |
| (sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride + 1] + 6] == -1 || |
| sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1; |
| } else |
| sl->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE; |
| if (sl->mb_x > 0) { |
| AV_COPY32(sl->mv_cache[m][scan8[0] - 1 - 1 * 8], |
| h->cur_pic.motion_val[m][b_xy - h->b_stride - 1]); |
| sl->ref_cache[m][scan8[0] - 1 - 1 * 8] = |
| (sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1; |
| } else |
| sl->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE; |
| } else |
| memset(&sl->ref_cache[m][scan8[0] - 1 * 8 - 1], |
| PART_NOT_AVAILABLE, 8); |
| |
| if (h->pict_type != AV_PICTURE_TYPE_B) |
| break; |
| } |
| |
| /* decode motion vector(s) and form prediction(s) */ |
| if (h->pict_type == AV_PICTURE_TYPE_P) { |
| if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0) |
| return -1; |
| } else { /* AV_PICTURE_TYPE_B */ |
| if (mb_type != 2) { |
| if (svq3_mc_dir(s, 0, mode, 0, 0) < 0) |
| return -1; |
| } else { |
| for (i = 0; i < 4; i++) |
| memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
| 0, 4 * 2 * sizeof(int16_t)); |
| } |
| if (mb_type != 1) { |
| if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0) |
| return -1; |
| } else { |
| for (i = 0; i < 4; i++) |
| memset(h->cur_pic.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(sl->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t)); |
| |
| if (mb_type == 8) { |
| if (sl->mb_x > 0) { |
| for (i = 0; i < 4; i++) |
| sl->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6 - i]; |
| if (sl->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) |
| sl->left_samples_available = 0x5F5F; |
| } |
| if (sl->mb_y > 0) { |
| sl->intra4x4_pred_mode_cache[4 + 8 * 0] = sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 0]; |
| sl->intra4x4_pred_mode_cache[5 + 8 * 0] = sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 1]; |
| sl->intra4x4_pred_mode_cache[6 + 8 * 0] = sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 2]; |
| sl->intra4x4_pred_mode_cache[7 + 8 * 0] = sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 3]; |
| |
| if (sl->intra4x4_pred_mode_cache[4 + 8 * 0] == -1) |
| sl->top_samples_available = 0x33FF; |
| } |
| |
| /* decode prediction codes for luma blocks */ |
| for (i = 0; i < 16; i += 2) { |
| vlc = svq3_get_ue_golomb(&h->gb); |
| |
| if (vlc >= 25U) { |
| av_log(h->avctx, AV_LOG_ERROR, |
| "luma prediction:%"PRIu32"\n", vlc); |
| return -1; |
| } |
| |
| left = &sl->intra4x4_pred_mode_cache[scan8[i] - 1]; |
| top = &sl->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->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(&sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4); |
| } |
| |
| write_back_intra_pred_mode(h, sl); |
| |
| if (mb_type == 8) { |
| ff_h264_check_intra4x4_pred_mode(h, sl); |
| |
| sl->top_samples_available = (sl->mb_y == 0) ? 0x33FF : 0xFFFF; |
| sl->left_samples_available = (sl->mb_x == 0) ? 0x5F5F : 0xFFFF; |
| } else { |
| for (i = 0; i < 4; i++) |
| memset(&sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4); |
| |
| sl->top_samples_available = 0x33FF; |
| sl->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 ((sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, sl, dir, 0)) < 0) { |
| av_log(h->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n"); |
| return sl->intra16x16_pred_mode; |
| } |
| |
| cbp = i_mb_type_info[mb_type - 8].cbp; |
| mb_type = MB_TYPE_INTRA16x16; |
| } |
| |
| if (!IS_INTER(mb_type) && h->pict_type != AV_PICTURE_TYPE_I) { |
| for (i = 0; i < 4; i++) |
| memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
| 0, 4 * 2 * sizeof(int16_t)); |
| if (h->pict_type == AV_PICTURE_TYPE_B) { |
| for (i = 0; i < 4; i++) |
| memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride], |
| 0, 4 * 2 * sizeof(int16_t)); |
| } |
| } |
| if (!IS_INTRA4x4(mb_type)) { |
| memset(sl->intra4x4_pred_mode + h->mb2br_xy[mb_xy], DC_PRED, 8); |
| } |
| if (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B) { |
| memset(sl->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t)); |
| } |
| |
| if (!IS_INTRA16x16(mb_type) && |
| (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B)) { |
| if ((vlc = svq3_get_ue_golomb(&h->gb)) >= 48U){ |
| av_log(h->avctx, AV_LOG_ERROR, "cbp_vlc=%"PRIu32"\n", vlc); |
| return -1; |
| } |
| |
| cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] |
| : golomb_to_inter_cbp[vlc]; |
| } |
| if (IS_INTRA16x16(mb_type) || |
| (h->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) { |
| sl->qscale += svq3_get_se_golomb(&h->gb); |
| |
| if (sl->qscale > 31u) { |
| av_log(h->avctx, AV_LOG_ERROR, "qscale:%d\n", sl->qscale); |
| return -1; |
| } |
| } |
| if (IS_INTRA16x16(mb_type)) { |
| AV_ZERO128(sl->mb_luma_dc[0] + 0); |
| AV_ZERO128(sl->mb_luma_dc[0] + 8); |
| if (svq3_decode_block(&h->gb, sl->mb_luma_dc[0], 0, 1)) { |
| av_log(h->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 = ((sl->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 ? (1 * (j & 1) + 2 * (i & 1) + |
| 2 * (j & 2) + 4 * (i & 2)) |
| : (4 * i + j); |
| sl->non_zero_count_cache[scan8[k]] = 1; |
| |
| if (svq3_decode_block(&h->gb, &sl->mb[16 * k], index, type)) { |
| av_log(h->avctx, AV_LOG_ERROR, |
| "error while decoding block\n"); |
| return -1; |
| } |
| } |
| } |
| |
| if ((cbp & 0x30)) { |
| for (i = 1; i < 3; ++i) |
| if (svq3_decode_block(&h->gb, &sl->mb[16 * 16 * i], 0, 3)) { |
| av_log(h->avctx, AV_LOG_ERROR, |
| "error while decoding chroma dc block\n"); |
| return -1; |
| } |
| |
| if ((cbp & 0x20)) { |
| for (i = 1; i < 3; i++) { |
| for (j = 0; j < 4; j++) { |
| k = 16 * i + j; |
| sl->non_zero_count_cache[scan8[k]] = 1; |
| |
| if (svq3_decode_block(&h->gb, &sl->mb[16 * k], 1, 1)) { |
| av_log(h->avctx, AV_LOG_ERROR, |
| "error while decoding chroma ac block\n"); |
| return -1; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| sl->cbp = cbp; |
| h->cur_pic.mb_type[mb_xy] = mb_type; |
| |
| if (IS_INTRA(mb_type)) |
| sl->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, sl, DC_PRED8x8, 1); |
| |
| return 0; |
| } |
| |
| static int svq3_decode_slice_header(AVCodecContext *avctx) |
| { |
| SVQ3Context *s = avctx->priv_data; |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| const int mb_xy = sl->mb_xy; |
| int i, header; |
| unsigned slice_id; |
| |
| header = get_bits(&h->gb, 8); |
| |
| if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) { |
| /* TODO: what? */ |
| av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); |
| return -1; |
| } else { |
| int length = header >> 5 & 3; |
| |
| s->next_slice_index = get_bits_count(&h->gb) + |
| 8 * show_bits(&h->gb, 8 * length) + |
| 8 * length; |
| |
| if (s->next_slice_index > h->gb.size_in_bits) { |
| av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n"); |
| return -1; |
| } |
| |
| h->gb.size_in_bits = s->next_slice_index - 8 * (length - 1); |
| skip_bits(&h->gb, 8); |
| |
| if (s->watermark_key) { |
| uint32_t header = AV_RL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1]); |
| AV_WL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1], |
| header ^ s->watermark_key); |
| } |
| if (length > 0) { |
| memmove((uint8_t *) &h->gb.buffer[get_bits_count(&h->gb) >> 3], |
| &h->gb.buffer[h->gb.size_in_bits >> 3], length - 1); |
| } |
| skip_bits_long(&h->gb, 0); |
| } |
| |
| if ((slice_id = svq3_get_ue_golomb(&h->gb)) >= 3) { |
| av_log(h->avctx, AV_LOG_ERROR, "illegal slice type %u \n", slice_id); |
| return -1; |
| } |
| |
| sl->slice_type = golomb_to_pict_type[slice_id]; |
| |
| if ((header & 0x9F) == 2) { |
| i = (h->mb_num < 64) ? 6 : (1 + av_log2(h->mb_num - 1)); |
| sl->mb_skip_run = get_bits(&h->gb, i) - |
| (sl->mb_y * h->mb_width + sl->mb_x); |
| } else { |
| skip_bits1(&h->gb); |
| sl->mb_skip_run = 0; |
| } |
| |
| sl->slice_num = get_bits(&h->gb, 8); |
| sl->qscale = get_bits(&h->gb, 5); |
| s->adaptive_quant = get_bits1(&h->gb); |
| |
| /* unknown fields */ |
| skip_bits1(&h->gb); |
| |
| if (s->has_watermark) |
| skip_bits1(&h->gb); |
| |
| skip_bits1(&h->gb); |
| skip_bits(&h->gb, 2); |
| |
| if (skip_1stop_8data_bits(&h->gb) < 0) |
| return AVERROR_INVALIDDATA; |
| |
| /* reset intra predictors and invalidate motion vector references */ |
| if (sl->mb_x > 0) { |
| memset(sl->intra4x4_pred_mode + h->mb2br_xy[mb_xy - 1] + 3, |
| -1, 4 * sizeof(int8_t)); |
| memset(sl->intra4x4_pred_mode + h->mb2br_xy[mb_xy - sl->mb_x], |
| -1, 8 * sizeof(int8_t) * sl->mb_x); |
| } |
| if (sl->mb_y > 0) { |
| memset(sl->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_stride], |
| -1, 8 * sizeof(int8_t) * (h->mb_width - sl->mb_x)); |
| |
| if (sl->mb_x > 0) |
| sl->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] = -1; |
| } |
| |
| return 0; |
| } |
| |
| static av_cold int svq3_decode_init(AVCodecContext *avctx) |
| { |
| SVQ3Context *s = avctx->priv_data; |
| H264Context *h = &s->h; |
| H264SliceContext *sl; |
| int m; |
| unsigned char *extradata; |
| unsigned char *extradata_end; |
| unsigned int size; |
| int marker_found = 0; |
| int ret; |
| |
| s->cur_pic = av_mallocz(sizeof(*s->cur_pic)); |
| s->last_pic = av_mallocz(sizeof(*s->last_pic)); |
| s->next_pic = av_mallocz(sizeof(*s->next_pic)); |
| if (!s->next_pic || !s->last_pic || !s->cur_pic) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| s->cur_pic->f = av_frame_alloc(); |
| s->last_pic->f = av_frame_alloc(); |
| s->next_pic->f = av_frame_alloc(); |
| if (!s->cur_pic->f || !s->last_pic->f || !s->next_pic->f) |
| return AVERROR(ENOMEM); |
| |
| if ((ret = ff_h264_decode_init(avctx)) < 0) |
| goto fail; |
| |
| // we will overwrite it later during decoding |
| av_frame_free(&h->cur_pic.f); |
| |
| av_frame_free(&h->last_pic_for_ec.f); |
| |
| ff_h264dsp_init(&h->h264dsp, 8, 1); |
| av_assert0(h->sps.bit_depth_chroma == 0); |
| ff_h264_pred_init(&h->hpc, AV_CODEC_ID_SVQ3, 8, 1); |
| ff_videodsp_init(&h->vdsp, 8); |
| |
| memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t)); |
| memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t)); |
| |
| avctx->bits_per_raw_sample = 8; |
| h->sps.bit_depth_luma = 8; |
| h->chroma_format_idc = 1; |
| |
| ff_hpeldsp_init(&s->hdsp, avctx->flags); |
| ff_tpeldsp_init(&s->tdsp); |
| |
| sl = h->slice_ctx; |
| |
| h->flags = avctx->flags; |
| sl->is_complex = 1; |
| h->sps.chroma_format_idc = 1; |
| h->picture_structure = PICT_FRAME; |
| avctx->pix_fmt = AV_PIX_FMT_YUVJ420P; |
| avctx->color_range = AVCOL_RANGE_JPEG; |
| |
| h->slice_ctx[0].chroma_qp[0] = h->slice_ctx[0].chroma_qp[1] = 4; |
| h->chroma_x_shift = h->chroma_y_shift = 1; |
| |
| s->halfpel_flag = 1; |
| s->thirdpel_flag = 1; |
| s->has_watermark = 0; |
| |
| /* prowl for the "SEQH" marker in the extradata */ |
| extradata = (unsigned char *)avctx->extradata; |
| extradata_end = avctx->extradata + avctx->extradata_size; |
| if (extradata) { |
| for (m = 0; m + 8 < avctx->extradata_size; m++) { |
| if (!memcmp(extradata, "SEQH", 4)) { |
| marker_found = 1; |
| break; |
| } |
| extradata++; |
| } |
| } |
| |
| /* if a match was found, parse the extra data */ |
| if (marker_found) { |
| GetBitContext gb; |
| int frame_size_code; |
| int unk0, unk1, unk2, unk3, unk4; |
| |
| size = AV_RB32(&extradata[4]); |
| if (size > extradata_end - extradata - 8) { |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| init_get_bits(&gb, extradata + 8, size * 8); |
| |
| /* 'frame size code' and optional 'width, height' */ |
| frame_size_code = get_bits(&gb, 3); |
| switch (frame_size_code) { |
| case 0: |
| avctx->width = 160; |
| avctx->height = 120; |
| break; |
| case 1: |
| avctx->width = 128; |
| avctx->height = 96; |
| break; |
| case 2: |
| avctx->width = 176; |
| avctx->height = 144; |
| break; |
| case 3: |
| avctx->width = 352; |
| avctx->height = 288; |
| break; |
| case 4: |
| avctx->width = 704; |
| avctx->height = 576; |
| break; |
| case 5: |
| avctx->width = 240; |
| avctx->height = 180; |
| break; |
| case 6: |
| avctx->width = 320; |
| avctx->height = 240; |
| break; |
| case 7: |
| avctx->width = get_bits(&gb, 12); |
| avctx->height = get_bits(&gb, 12); |
| break; |
| } |
| |
| s->halfpel_flag = get_bits1(&gb); |
| s->thirdpel_flag = get_bits1(&gb); |
| |
| /* unknown fields */ |
| unk0 = get_bits1(&gb); |
| unk1 = get_bits1(&gb); |
| unk2 = get_bits1(&gb); |
| unk3 = get_bits1(&gb); |
| |
| h->low_delay = get_bits1(&gb); |
| |
| /* unknown field */ |
| unk4 = get_bits1(&gb); |
| |
| av_log(avctx, AV_LOG_DEBUG, "Unknown fields %d %d %d %d %d\n", |
| unk0, unk1, unk2, unk3, unk4); |
| |
| if (skip_1stop_8data_bits(&gb) < 0) { |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| s->has_watermark = get_bits1(&gb); |
| avctx->has_b_frames = !h->low_delay; |
| if (s->has_watermark) { |
| #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 long buf_len = watermark_width * |
| watermark_height * 4; |
| int offset = get_bits_count(&gb) + 7 >> 3; |
| uint8_t *buf; |
| |
| if (watermark_height <= 0 || |
| (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) { |
| ret = -1; |
| goto fail; |
| } |
| |
| buf = av_malloc(buf_len); |
| if (!buf) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| av_log(avctx, AV_LOG_DEBUG, "watermark size: %ux%u\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, &buf_len, extradata + 8 + offset, |
| size - offset) != Z_OK) { |
| av_log(avctx, AV_LOG_ERROR, |
| "could not uncompress watermark logo\n"); |
| av_free(buf); |
| ret = -1; |
| goto fail; |
| } |
| s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); |
| s->watermark_key = s->watermark_key << 16 | s->watermark_key; |
| av_log(avctx, AV_LOG_DEBUG, |
| "watermark key %#"PRIx32"\n", s->watermark_key); |
| av_free(buf); |
| #else |
| av_log(avctx, AV_LOG_ERROR, |
| "this svq3 file contains watermark which need zlib support compiled in\n"); |
| ret = -1; |
| goto fail; |
| #endif |
| } |
| } |
| |
| h->width = avctx->width; |
| h->height = avctx->height; |
| h->mb_width = (h->width + 15) / 16; |
| h->mb_height = (h->height + 15) / 16; |
| h->mb_stride = h->mb_width + 1; |
| h->mb_num = h->mb_width * h->mb_height; |
| h->b_stride = 4 * h->mb_width; |
| s->h_edge_pos = h->mb_width * 16; |
| s->v_edge_pos = h->mb_height * 16; |
| |
| if ((ret = ff_h264_alloc_tables(h)) < 0) { |
| av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n"); |
| goto fail; |
| } |
| |
| return 0; |
| fail: |
| svq3_decode_end(avctx); |
| return ret; |
| } |
| |
| static void free_picture(AVCodecContext *avctx, H264Picture *pic) |
| { |
| int i; |
| for (i = 0; i < 2; i++) { |
| av_buffer_unref(&pic->motion_val_buf[i]); |
| av_buffer_unref(&pic->ref_index_buf[i]); |
| } |
| av_buffer_unref(&pic->mb_type_buf); |
| |
| av_frame_unref(pic->f); |
| } |
| |
| static int get_buffer(AVCodecContext *avctx, H264Picture *pic) |
| { |
| SVQ3Context *s = avctx->priv_data; |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1; |
| const int mb_array_size = h->mb_stride * h->mb_height; |
| const int b4_stride = h->mb_width * 4 + 1; |
| const int b4_array_size = b4_stride * h->mb_height * 4; |
| int ret; |
| |
| if (!pic->motion_val_buf[0]) { |
| int i; |
| |
| pic->mb_type_buf = av_buffer_allocz((big_mb_num + h->mb_stride) * sizeof(uint32_t)); |
| if (!pic->mb_type_buf) |
| return AVERROR(ENOMEM); |
| pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1; |
| |
| for (i = 0; i < 2; i++) { |
| pic->motion_val_buf[i] = av_buffer_allocz(2 * (b4_array_size + 4) * sizeof(int16_t)); |
| pic->ref_index_buf[i] = av_buffer_allocz(4 * mb_array_size); |
| if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; |
| pic->ref_index[i] = pic->ref_index_buf[i]->data; |
| } |
| } |
| pic->reference = !(h->pict_type == AV_PICTURE_TYPE_B); |
| |
| ret = ff_get_buffer(avctx, pic->f, |
| pic->reference ? AV_GET_BUFFER_FLAG_REF : 0); |
| if (ret < 0) |
| goto fail; |
| |
| if (!sl->edge_emu_buffer) { |
| sl->edge_emu_buffer = av_mallocz_array(pic->f->linesize[0], 17); |
| if (!sl->edge_emu_buffer) |
| return AVERROR(ENOMEM); |
| } |
| |
| sl->linesize = pic->f->linesize[0]; |
| sl->uvlinesize = pic->f->linesize[1]; |
| |
| return 0; |
| fail: |
| free_picture(avctx, pic); |
| return ret; |
| } |
| |
| static int svq3_decode_frame(AVCodecContext *avctx, void *data, |
| int *got_frame, AVPacket *avpkt) |
| { |
| SVQ3Context *s = avctx->priv_data; |
| H264Context *h = &s->h; |
| H264SliceContext *sl = &h->slice_ctx[0]; |
| int buf_size = avpkt->size; |
| int left; |
| uint8_t *buf; |
| int ret, m, i; |
| |
| /* special case for last picture */ |
| if (buf_size == 0) { |
| if (s->next_pic->f->data[0] && !h->low_delay && !s->last_frame_output) { |
| ret = av_frame_ref(data, s->next_pic->f); |
| if (ret < 0) |
| return ret; |
| s->last_frame_output = 1; |
| *got_frame = 1; |
| } |
| return 0; |
| } |
| |
| sl->mb_x = sl->mb_y = sl->mb_xy = 0; |
| |
| if (s->watermark_key) { |
| av_fast_padded_malloc(&s->buf, &s->buf_size, buf_size); |
| if (!s->buf) |
| return AVERROR(ENOMEM); |
| memcpy(s->buf, avpkt->data, buf_size); |
| buf = s->buf; |
| } else { |
| buf = avpkt->data; |
| } |
| |
| init_get_bits(&h->gb, buf, 8 * buf_size); |
| |
| if (svq3_decode_slice_header(avctx)) |
| return -1; |
| |
| h->pict_type = sl->slice_type; |
| |
| if (h->pict_type != AV_PICTURE_TYPE_B) |
| FFSWAP(H264Picture*, s->next_pic, s->last_pic); |
| |
| av_frame_unref(s->cur_pic->f); |
| |
| /* for skipping the frame */ |
| s->cur_pic->f->pict_type = h->pict_type; |
| s->cur_pic->f->key_frame = (h->pict_type == AV_PICTURE_TYPE_I); |
| |
| ret = get_buffer(avctx, s->cur_pic); |
| if (ret < 0) |
| return ret; |
| |
| h->cur_pic_ptr = s->cur_pic; |
| h->cur_pic = *s->cur_pic; |
| |
| for (i = 0; i < 16; i++) { |
| h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * sl->linesize * ((scan8[i] - scan8[0]) >> 3); |
| h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * sl->linesize * ((scan8[i] - scan8[0]) >> 3); |
| } |
| for (i = 0; i < 16; i++) { |
| h->block_offset[16 + i] = |
| h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * sl->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
| h->block_offset[48 + 16 + i] = |
| h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * sl->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
| } |
| |
| if (h->pict_type != AV_PICTURE_TYPE_I) { |
| if (!s->last_pic->f->data[0]) { |
| av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
| av_frame_unref(s->last_pic->f); |
| ret = get_buffer(avctx, s->last_pic); |
| if (ret < 0) |
| return ret; |
| memset(s->last_pic->f->data[0], 0, avctx->height * s->last_pic->f->linesize[0]); |
| memset(s->last_pic->f->data[1], 0x80, (avctx->height / 2) * |
| s->last_pic->f->linesize[1]); |
| memset(s->last_pic->f->data[2], 0x80, (avctx->height / 2) * |
| s->last_pic->f->linesize[2]); |
| } |
| |
| if (h->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f->data[0]) { |
| av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
| av_frame_unref(s->next_pic->f); |
| ret = get_buffer(avctx, s->next_pic); |
| if (ret < 0) |
| return ret; |
| memset(s->next_pic->f->data[0], 0, avctx->height * s->next_pic->f->linesize[0]); |
| memset(s->next_pic->f->data[1], 0x80, (avctx->height / 2) * |
| s->next_pic->f->linesize[1]); |
| memset(s->next_pic->f->data[2], 0x80, (avctx->height / 2) * |
| s->next_pic->f->linesize[2]); |
| } |
| } |
| |
| if (avctx->debug & FF_DEBUG_PICT_INFO) |
| av_log(h->avctx, AV_LOG_DEBUG, |
| "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n", |
| av_get_picture_type_char(h->pict_type), |
| s->halfpel_flag, s->thirdpel_flag, |
| s->adaptive_quant, h->slice_ctx[0].qscale, sl->slice_num); |
| |
| if (avctx->skip_frame >= AVDISCARD_NONREF && h->pict_type == AV_PICTURE_TYPE_B || |
| avctx->skip_frame >= AVDISCARD_NONKEY && h->pict_type != AV_PICTURE_TYPE_I || |
| avctx->skip_frame >= AVDISCARD_ALL) |
| return 0; |
| |
| if (s->next_p_frame_damaged) { |
| if (h->pict_type == AV_PICTURE_TYPE_B) |
| return 0; |
| else |
| s->next_p_frame_damaged = 0; |
| } |
| |
| if (h->pict_type == AV_PICTURE_TYPE_B) { |
| h->frame_num_offset = sl->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->avctx, AV_LOG_ERROR, "error in B-frame picture id\n"); |
| return -1; |
| } |
| } else { |
| h->prev_frame_num = h->frame_num; |
| h->frame_num = sl->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++) |
| sl->ref_cache[m][scan8[0] + 8 * i + j] = 1; |
| if (i < 3) |
| sl->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE; |
| } |
| } |
| |
| for (sl->mb_y = 0; sl->mb_y < h->mb_height; sl->mb_y++) { |
| for (sl->mb_x = 0; sl->mb_x < h->mb_width; sl->mb_x++) { |
| unsigned mb_type; |
| sl->mb_xy = sl->mb_x + sl->mb_y * h->mb_stride; |
| |
| if ((get_bits_count(&h->gb) + 7) >= h->gb.size_in_bits && |
| ((get_bits_count(&h->gb) & 7) == 0 || |
| show_bits(&h->gb, -get_bits_count(&h->gb) & 7) == 0)) { |
| skip_bits(&h->gb, s->next_slice_index - get_bits_count(&h->gb)); |
| h->gb.size_in_bits = 8 * buf_size; |
| |
| if (svq3_decode_slice_header(avctx)) |
| return -1; |
| |
| /* TODO: support s->mb_skip_run */ |
| } |
| |
| mb_type = svq3_get_ue_golomb(&h->gb); |
| |
| if (h->pict_type == AV_PICTURE_TYPE_I) |
| mb_type += 8; |
| else if (h->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) |
| mb_type += 4; |
| if (mb_type > 33 || svq3_decode_mb(s, mb_type)) { |
| av_log(h->avctx, AV_LOG_ERROR, |
| "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| |
| if (mb_type != 0 || sl->cbp) |
| ff_h264_hl_decode_mb(h, &h->slice_ctx[0]); |
| |
| if (h->pict_type != AV_PICTURE_TYPE_B && !h->low_delay) |
| h->cur_pic.mb_type[sl->mb_x + sl->mb_y * h->mb_stride] = |
| (h->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1; |
| } |
| |
| ff_draw_horiz_band(avctx, s->cur_pic->f, |
| s->last_pic->f->data[0] ? s->last_pic->f : NULL, |
| 16 * sl->mb_y, 16, h->picture_structure, 0, |
| h->low_delay); |
| } |
| |
| left = buf_size*8 - get_bits_count(&h->gb); |
| |
| if (sl->mb_y != h->mb_height || sl->mb_x != h->mb_width) { |
| av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, sl->mb_y, sl->mb_x, left); |
| //av_hex_dump(stderr, buf+buf_size-8, 8); |
| } |
| |
| if (left < 0) { |
| av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left); |
| return -1; |
| } |
| |
| if (h->pict_type == AV_PICTURE_TYPE_B || h->low_delay) |
| ret = av_frame_ref(data, s->cur_pic->f); |
| else if (s->last_pic->f->data[0]) |
| ret = av_frame_ref(data, s->last_pic->f); |
| if (ret < 0) |
| return ret; |
| |
| /* Do not output the last pic after seeking. */ |
| if (s->last_pic->f->data[0] || h->low_delay) |
| *got_frame = 1; |
| |
| if (h->pict_type != AV_PICTURE_TYPE_B) { |
| FFSWAP(H264Picture*, s->cur_pic, s->next_pic); |
| } else { |
| av_frame_unref(s->cur_pic->f); |
| } |
| |
| return buf_size; |
| } |
| |
| static av_cold int svq3_decode_end(AVCodecContext *avctx) |
| { |
| SVQ3Context *s = avctx->priv_data; |
| H264Context *h = &s->h; |
| |
| free_picture(avctx, s->cur_pic); |
| free_picture(avctx, s->next_pic); |
| free_picture(avctx, s->last_pic); |
| av_frame_free(&s->cur_pic->f); |
| av_frame_free(&s->next_pic->f); |
| av_frame_free(&s->last_pic->f); |
| av_freep(&s->cur_pic); |
| av_freep(&s->next_pic); |
| av_freep(&s->last_pic); |
| |
| memset(&h->cur_pic, 0, sizeof(h->cur_pic)); |
| |
| ff_h264_free_context(h); |
| |
| av_freep(&s->buf); |
| s->buf_size = 0; |
| |
| return 0; |
| } |
| |
| AVCodec ff_svq3_decoder = { |
| .name = "svq3", |
| .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_SVQ3, |
| .priv_data_size = sizeof(SVQ3Context), |
| .init = svq3_decode_init, |
| .close = svq3_decode_end, |
| .decode = svq3_decode_frame, |
| .capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | |
| AV_CODEC_CAP_DR1 | |
| AV_CODEC_CAP_DELAY, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_NONE}, |
| }; |
