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/* |
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* DV decoder |
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* Copyright (c) 2002 Fabrice Bellard |
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* Copyright (c) 2004 Roman Shaposhnik |
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* |
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* 50 Mbps (DVCPRO50) support |
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* Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com> |
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* |
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* 100 Mbps (DVCPRO HD) support |
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* Initial code by Daniel Maas <dmaas@maasdigital.com> (funded by BBC R&D) |
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* Final code by Roman Shaposhnik |
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* |
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* Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth |
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* of DV technical info. |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* DV decoder |
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*/ |
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#include "libavutil/avassert.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/pixdesc.h" |
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#include "avcodec.h" |
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#include "dv.h" |
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#include "dv_profile_internal.h" |
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#include "dvdata.h" |
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#include "get_bits.h" |
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#include "internal.h" |
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#include "put_bits.h" |
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#include "simple_idct.h" |
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#include "thread.h" |
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typedef struct BlockInfo { |
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const uint32_t *factor_table; |
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const uint8_t *scan_table; |
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uint8_t pos; /* position in block */ |
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void (*idct_put)(uint8_t *dest, ptrdiff_t stride, int16_t *block); |
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uint8_t partial_bit_count; |
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uint32_t partial_bit_buffer; |
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int shift_offset; |
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} BlockInfo; |
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static const int dv_iweight_bits = 14; |
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static const uint16_t dv_iweight_88[64] = { |
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32768, 16705, 16705, 17734, 17032, 17734, 18205, 18081, |
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18081, 18205, 18725, 18562, 19195, 18562, 18725, 19266, |
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19091, 19705, 19705, 19091, 19266, 21407, 19643, 20267, |
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20228, 20267, 19643, 21407, 22725, 21826, 20853, 20806, |
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20806, 20853, 21826, 22725, 23170, 23170, 21407, 21400, |
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21407, 23170, 23170, 24598, 23786, 22018, 22018, 23786, |
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24598, 25251, 24465, 22654, 24465, 25251, 25972, 25172, |
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25172, 25972, 26722, 27969, 26722, 29692, 29692, 31521, |
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}; |
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static const uint16_t dv_iweight_248[64] = { |
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32768, 16384, 16705, 16705, 17734, 17734, 17734, 17734, |
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18081, 18081, 18725, 18725, 21407, 21407, 19091, 19091, |
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19195, 19195, 18205, 18205, 18725, 18725, 19705, 19705, |
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20267, 20267, 21826, 21826, 23170, 23170, 20806, 20806, |
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20267, 20267, 19266, 19266, 21407, 21407, 20853, 20853, |
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21400, 21400, 23786, 23786, 24465, 24465, 22018, 22018, |
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23170, 23170, 22725, 22725, 24598, 24598, 24465, 24465, |
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25172, 25172, 27969, 27969, 25972, 25972, 29692, 29692 |
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}; |
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/** |
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* The "inverse" DV100 weights are actually just the spec weights (zig-zagged). |
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*/ |
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static const uint16_t dv_iweight_1080_y[64] = { |
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128, 16, 16, 17, 17, 17, 18, 18, |
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18, 18, 18, 18, 19, 18, 18, 19, |
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19, 19, 19, 19, 19, 42, 38, 40, |
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40, 40, 38, 42, 44, 43, 41, 41, |
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41, 41, 43, 44, 45, 45, 42, 42, |
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42, 45, 45, 48, 46, 43, 43, 46, |
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48, 49, 48, 44, 48, 49, 101, 98, |
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98, 101, 104, 109, 104, 116, 116, 123, |
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}; |
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static const uint16_t dv_iweight_1080_c[64] = { |
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128, 16, 16, 17, 17, 17, 25, 25, |
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25, 25, 26, 25, 26, 25, 26, 26, |
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26, 27, 27, 26, 26, 42, 38, 40, |
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40, 40, 38, 42, 44, 43, 41, 41, |
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41, 41, 43, 44, 91, 91, 84, 84, |
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84, 91, 91, 96, 93, 86, 86, 93, |
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96, 197, 191, 177, 191, 197, 203, 197, |
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197, 203, 209, 219, 209, 232, 232, 246, |
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}; |
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static const uint16_t dv_iweight_720_y[64] = { |
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128, 16, 16, 17, 17, 17, 18, 18, |
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18, 18, 18, 18, 19, 18, 18, 19, |
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19, 19, 19, 19, 19, 42, 38, 40, |
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40, 40, 38, 42, 44, 43, 41, 41, |
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41, 41, 43, 44, 68, 68, 63, 63, |
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63, 68, 68, 96, 92, 86, 86, 92, |
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96, 98, 96, 88, 96, 98, 202, 196, |
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196, 202, 208, 218, 208, 232, 232, 246, |
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}; |
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static const uint16_t dv_iweight_720_c[64] = { |
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128, 24, 24, 26, 26, 26, 36, 36, |
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36, 36, 36, 36, 38, 36, 36, 38, |
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38, 38, 38, 38, 38, 84, 76, 80, |
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80, 80, 76, 84, 88, 86, 82, 82, |
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82, 82, 86, 88, 182, 182, 168, 168, |
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168, 182, 182, 192, 186, 192, 172, 186, |
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192, 394, 382, 354, 382, 394, 406, 394, |
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394, 406, 418, 438, 418, 464, 464, 492, |
128 |
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}; |
129 |
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130 |
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static void dv_init_weight_tables(DVVideoContext *ctx, const AVDVProfile *d) |
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{ |
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int j, i, c, s; |
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uint32_t *factor1 = &ctx->idct_factor[0], |
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✓✓ |
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*factor2 = &ctx->idct_factor[DV_PROFILE_IS_HD(d) ? 4096 : 2816]; |
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✓✓ |
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if (DV_PROFILE_IS_HD(d)) { |
137 |
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/* quantization quanta by QNO for DV100 */ |
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static const uint8_t dv100_qstep[16] = { |
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1, /* QNO = 0 and 1 both have no quantization */ |
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1, |
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2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52 |
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}; |
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const uint16_t *iweight1, *iweight2; |
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✓✓ |
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if (d->height == 720) { |
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iweight1 = &dv_iweight_720_y[0]; |
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iweight2 = &dv_iweight_720_c[0]; |
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} else { |
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iweight1 = &dv_iweight_1080_y[0]; |
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iweight2 = &dv_iweight_1080_c[0]; |
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} |
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✓✓ |
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for (c = 0; c < 4; c++) { |
153 |
✓✓ |
1088 |
for (s = 0; s < 16; s++) { |
154 |
✓✓ |
66560 |
for (i = 0; i < 64; i++) { |
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65536 |
*factor1++ = (dv100_qstep[s] << (c + 9)) * iweight1[i]; |
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65536 |
*factor2++ = (dv100_qstep[s] << (c + 9)) * iweight2[i]; |
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} |
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} |
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} |
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} else { |
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static const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 }; |
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const uint16_t *iweight1 = &dv_iweight_88[0]; |
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✓✓ |
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for (j = 0; j < 2; j++, iweight1 = &dv_iweight_248[0]) { |
164 |
✓✓ |
1794 |
for (s = 0; s < 22; s++) { |
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✓✓ |
8580 |
for (i = c = 0; c < 4; c++) { |
166 |
✓✓ |
116688 |
for (; i < dv_quant_areas[c]; i++) { |
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109824 |
*factor1 = iweight1[i] << (ff_dv_quant_shifts[s][c] + 1); |
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109824 |
*factor2++ = (*factor1++) << 1; |
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} |
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} |
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} |
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} |
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} |
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} |
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176 |
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static av_cold int dvvideo_decode_init(AVCodecContext *avctx) |
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{ |
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DVVideoContext *s = avctx->priv_data; |
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int i; |
180 |
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ff_idctdsp_init(&s->idsp, avctx); |
182 |
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183 |
✓✓ |
3705 |
for (i = 0; i < 64; i++) |
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s->dv_zigzag[0][i] = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
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186 |
✗✓ |
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if (avctx->lowres){ |
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for (i = 0; i < 64; i++){ |
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int j = ff_dv_zigzag248_direct[i]; |
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s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2]; |
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} |
191 |
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}else |
192 |
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memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct, sizeof(s->dv_zigzag[1])); |
193 |
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s->idct_put[0] = s->idsp.idct_put; |
195 |
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s->idct_put[1] = ff_simple_idct248_put; |
196 |
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197 |
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return ff_dvvideo_init(avctx); |
198 |
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} |
199 |
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200 |
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/* decode AC coefficients */ |
201 |
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30293796 |
static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, int16_t *block) |
202 |
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{ |
203 |
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30293796 |
int last_index = gb->size_in_bits; |
204 |
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30293796 |
const uint8_t *scan_table = mb->scan_table; |
205 |
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30293796 |
const uint32_t *factor_table = mb->factor_table; |
206 |
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30293796 |
int pos = mb->pos; |
207 |
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30293796 |
int partial_bit_count = mb->partial_bit_count; |
208 |
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int level, run, vlc_len, index; |
209 |
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210 |
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30293796 |
OPEN_READER_NOSIZE(re, gb); |
211 |
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30293796 |
UPDATE_CACHE(re, gb); |
212 |
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213 |
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/* if we must parse a partial VLC, we do it here */ |
214 |
✓✓ |
30293796 |
if (partial_bit_count > 0) { |
215 |
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6979288 |
re_cache = re_cache >> partial_bit_count | |
216 |
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6979288 |
mb->partial_bit_buffer; |
217 |
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6979288 |
re_index -= partial_bit_count; |
218 |
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6979288 |
mb->partial_bit_count = 0; |
219 |
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} |
220 |
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221 |
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/* get the AC coefficients until last_index is reached */ |
222 |
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for (;;) { |
223 |
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204839777 |
ff_dlog(NULL, "%2d: bits=%04"PRIx32" index=%u\n", |
224 |
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pos, SHOW_UBITS(re, gb, 16), re_index); |
225 |
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/* our own optimized GET_RL_VLC */ |
226 |
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235133573 |
index = NEG_USR32(re_cache, TEX_VLC_BITS); |
227 |
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235133573 |
vlc_len = ff_dv_rl_vlc[index].len; |
228 |
✓✓ |
235133573 |
if (vlc_len < 0) { |
229 |
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17868057 |
index = NEG_USR32((unsigned) re_cache << TEX_VLC_BITS, -vlc_len) + |
230 |
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17868057 |
ff_dv_rl_vlc[index].level; |
231 |
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17868057 |
vlc_len = TEX_VLC_BITS - vlc_len; |
232 |
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} |
233 |
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235133573 |
level = ff_dv_rl_vlc[index].level; |
234 |
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235133573 |
run = ff_dv_rl_vlc[index].run; |
235 |
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236 |
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/* gotta check if we're still within gb boundaries */ |
237 |
✓✓ |
235133573 |
if (re_index + vlc_len > last_index) { |
238 |
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/* should be < 16 bits otherwise a codeword could have been parsed */ |
239 |
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8371918 |
mb->partial_bit_count = last_index - re_index; |
240 |
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8371918 |
mb->partial_bit_buffer = re_cache & ~(-1u >> mb->partial_bit_count); |
241 |
|
8371918 |
re_index = last_index; |
242 |
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8371918 |
break; |
243 |
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} |
244 |
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226761655 |
re_index += vlc_len; |
245 |
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246 |
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ff_dlog(NULL, "run=%d level=%d\n", run, level); |
247 |
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226761655 |
pos += run; |
248 |
✓✓ |
226761655 |
if (pos >= 64) |
249 |
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21921878 |
break; |
250 |
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251 |
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204839777 |
level = (level * factor_table[pos] + (1 << (dv_iweight_bits - 1))) >> |
252 |
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dv_iweight_bits; |
253 |
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204839777 |
block[scan_table[pos]] = level; |
254 |
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255 |
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204839777 |
UPDATE_CACHE(re, gb); |
256 |
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} |
257 |
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30293796 |
CLOSE_READER(re, gb); |
258 |
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30293796 |
mb->pos = pos; |
259 |
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30293796 |
} |
260 |
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261 |
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16614456 |
static inline void bit_copy(PutBitContext *pb, GetBitContext *gb) |
262 |
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{ |
263 |
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16614456 |
int bits_left = get_bits_left(gb); |
264 |
✓✓ |
51997335 |
while (bits_left >= MIN_CACHE_BITS) { |
265 |
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35382879 |
put_bits(pb, MIN_CACHE_BITS, get_bits(gb, MIN_CACHE_BITS)); |
266 |
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35382879 |
bits_left -= MIN_CACHE_BITS; |
267 |
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} |
268 |
✓✓ |
16614456 |
if (bits_left > 0) |
269 |
|
16056772 |
put_bits(pb, bits_left, get_bits(gb, bits_left)); |
270 |
|
16614456 |
} |
271 |
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272 |
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static av_always_inline void put_block_8x4(int16_t *block, uint8_t *av_restrict p, int stride) |
273 |
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{ |
274 |
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int i, j; |
275 |
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276 |
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for (i = 0; i < 4; i++) { |
277 |
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for (j = 0; j < 8; j++) |
278 |
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p[j] = av_clip_uint8(block[j]); |
279 |
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block += 8; |
280 |
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p += stride; |
281 |
|
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} |
282 |
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} |
283 |
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284 |
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static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s, uint8_t *data, |
285 |
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int stride, int16_t *blocks) |
286 |
|
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{ |
287 |
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s->idsp.idct(blocks + 0*64); |
288 |
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s->idsp.idct(blocks + 1*64); |
289 |
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|
290 |
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put_block_8x4(blocks+0*64, data, stride<<1); |
291 |
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put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1); |
292 |
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put_block_8x4(blocks+1*64, data + stride, stride<<1); |
293 |
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put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1); |
294 |
|
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} |
295 |
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|
296 |
|
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static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t *data, |
297 |
|
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int stride, int16_t *blocks) |
298 |
|
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{ |
299 |
|
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s->idsp.idct(blocks + 0*64); |
300 |
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s->idsp.idct(blocks + 1*64); |
301 |
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s->idsp.idct(blocks + 2*64); |
302 |
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s->idsp.idct(blocks + 3*64); |
303 |
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|
304 |
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put_block_8x4(blocks+0*64, data, stride<<1); |
305 |
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put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1); |
306 |
|
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put_block_8x4(blocks+1*64, data + 8, stride<<1); |
307 |
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put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1); |
308 |
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put_block_8x4(blocks+2*64, data + stride, stride<<1); |
309 |
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put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1); |
310 |
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put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1); |
311 |
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put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1); |
312 |
|
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} |
313 |
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|
314 |
|
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/* mb_x and mb_y are in units of 8 pixels */ |
315 |
|
611604 |
static int dv_decode_video_segment(AVCodecContext *avctx, void *arg) |
316 |
|
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{ |
317 |
|
611604 |
DVVideoContext *s = avctx->priv_data; |
318 |
|
611604 |
DVwork_chunk *work_chunk = arg; |
319 |
|
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int quant, dc, dct_mode, class1, j; |
320 |
|
|
int mb_index, mb_x, mb_y, last_index; |
321 |
|
|
int y_stride, linesize; |
322 |
|
|
int16_t *block, *block1; |
323 |
|
|
int c_offset; |
324 |
|
|
uint8_t *y_ptr; |
325 |
|
|
const uint8_t *buf_ptr; |
326 |
|
|
PutBitContext pb, vs_pb; |
327 |
|
|
GetBitContext gb; |
328 |
|
|
BlockInfo mb_data[5 * DV_MAX_BPM], *mb, *mb1; |
329 |
|
611604 |
LOCAL_ALIGNED_16(int16_t, sblock, [5 * DV_MAX_BPM], [64]); |
330 |
|
611604 |
LOCAL_ALIGNED_16(uint8_t, mb_bit_buffer, [80 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */ |
331 |
|
611604 |
LOCAL_ALIGNED_16(uint8_t, vs_bit_buffer, [80 * 5 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */ |
332 |
|
611604 |
const int log2_blocksize = 3-s->avctx->lowres; |
333 |
|
|
int is_field_mode[5]; |
334 |
|
611604 |
int vs_bit_buffer_damaged = 0; |
335 |
|
611604 |
int mb_bit_buffer_damaged[5] = {0}; |
336 |
|
611604 |
int retried = 0; |
337 |
|
|
int sta; |
338 |
|
|
|
339 |
|
|
av_assert1((((int) mb_bit_buffer) & 7) == 0); |
340 |
|
|
av_assert1((((int) vs_bit_buffer) & 7) == 0); |
341 |
|
|
|
342 |
|
611605 |
retry: |
343 |
|
|
|
344 |
|
611605 |
memset(sblock, 0, 5 * DV_MAX_BPM * sizeof(*sblock)); |
345 |
|
|
|
346 |
|
|
/* pass 1: read DC and AC coefficients in blocks */ |
347 |
|
611605 |
buf_ptr = &s->buf[work_chunk->buf_offset * 80]; |
348 |
|
611605 |
block1 = &sblock[0][0]; |
349 |
|
611605 |
mb1 = mb_data; |
350 |
|
611605 |
init_put_bits(&vs_pb, vs_bit_buffer, 5 * 80); |
351 |
✓✓ |
3669630 |
for (mb_index = 0; mb_index < 5; mb_index++, mb1 += s->sys->bpm, block1 += s->sys->bpm * 64) { |
352 |
|
|
/* skip header */ |
353 |
|
3058025 |
quant = buf_ptr[3] & 0x0f; |
354 |
✓✗ |
3058025 |
if (avctx->error_concealment) { |
355 |
✗✓ |
3058025 |
if ((buf_ptr[3] >> 4) == 0x0E) |
356 |
|
|
vs_bit_buffer_damaged = 1; |
357 |
✓✓ |
3058025 |
if (!mb_index) { |
358 |
|
611605 |
sta = buf_ptr[3] >> 4; |
359 |
✗✓ |
2446420 |
} else if (sta != (buf_ptr[3] >> 4)) |
360 |
|
|
vs_bit_buffer_damaged = 1; |
361 |
|
|
} |
362 |
|
3058025 |
buf_ptr += 4; |
363 |
|
3058025 |
init_put_bits(&pb, mb_bit_buffer, 80); |
364 |
|
3058025 |
mb = mb1; |
365 |
|
3058025 |
block = block1; |
366 |
|
3058025 |
is_field_mode[mb_index] = 0; |
367 |
✓✓ |
24986375 |
for (j = 0; j < s->sys->bpm; j++) { |
368 |
|
21928350 |
last_index = s->sys->block_sizes[j]; |
369 |
|
21928350 |
init_get_bits(&gb, buf_ptr, last_index); |
370 |
|
|
|
371 |
|
|
/* get the DC */ |
372 |
|
21928350 |
dc = get_sbits(&gb, 9); |
373 |
|
21928350 |
dct_mode = get_bits1(&gb); |
374 |
|
21928350 |
class1 = get_bits(&gb, 2); |
375 |
✓✓ |
21928350 |
if (DV_PROFILE_IS_HD(s->sys)) { |
376 |
|
14320800 |
mb->idct_put = s->idct_put[0]; |
377 |
|
14320800 |
mb->scan_table = s->dv_zigzag[0]; |
378 |
✓✓ |
14320800 |
mb->factor_table = &s->idct_factor[(j >= 4) * 4 * 16 * 64 + |
379 |
|
14320800 |
class1 * 16 * 64 + |
380 |
|
14320800 |
quant * 64]; |
381 |
✓✓✗✓
|
14320800 |
is_field_mode[mb_index] |= !j && dct_mode; |
382 |
|
|
} else { |
383 |
✓✓✓✗
|
7607550 |
mb->idct_put = s->idct_put[dct_mode && log2_blocksize == 3]; |
384 |
|
7607550 |
mb->scan_table = s->dv_zigzag[dct_mode]; |
385 |
|
7607550 |
mb->factor_table = |
386 |
✓✓ |
7607550 |
&s->idct_factor[(class1 == 3) * 2 * 22 * 64 + |
387 |
|
7607550 |
dct_mode * 22 * 64 + |
388 |
|
7607550 |
(quant + ff_dv_quant_offset[class1]) * 64]; |
389 |
|
|
} |
390 |
|
21928350 |
dc = dc * 4; |
391 |
|
|
/* convert to unsigned because 128 is not added in the |
392 |
|
|
* standard IDCT */ |
393 |
|
21928350 |
dc += 1024; |
394 |
|
21928350 |
block[0] = dc; |
395 |
|
21928350 |
buf_ptr += last_index >> 3; |
396 |
|
21928350 |
mb->pos = 0; |
397 |
|
21928350 |
mb->partial_bit_count = 0; |
398 |
|
|
|
399 |
|
|
ff_dlog(avctx, "MB block: %d, %d ", mb_index, j); |
400 |
|
21928350 |
dv_decode_ac(&gb, mb, block); |
401 |
|
|
|
402 |
|
|
/* write the remaining bits in a new buffer only if the |
403 |
|
|
* block is finished */ |
404 |
✓✓ |
21928350 |
if (mb->pos >= 64) |
405 |
|
14552928 |
bit_copy(&pb, &gb); |
406 |
✓✓✗✓
|
21928350 |
if (mb->pos >= 64 && mb->pos < 127) |
407 |
|
|
vs_bit_buffer_damaged = mb_bit_buffer_damaged[mb_index] = 1; |
408 |
|
|
|
409 |
|
21928350 |
block += 64; |
410 |
|
21928350 |
mb++; |
411 |
|
|
} |
412 |
|
|
|
413 |
✓✓ |
3058025 |
if (mb_bit_buffer_damaged[mb_index] > 0) |
414 |
|
1 |
continue; |
415 |
|
|
|
416 |
|
|
/* pass 2: we can do it just after */ |
417 |
|
|
ff_dlog(avctx, "***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index); |
418 |
|
3058024 |
block = block1; |
419 |
|
3058024 |
mb = mb1; |
420 |
|
3058024 |
init_get_bits(&gb, mb_bit_buffer, put_bits_count(&pb)); |
421 |
|
3058024 |
put_bits32(&pb, 0); // padding must be zeroed |
422 |
|
3058024 |
flush_put_bits(&pb); |
423 |
✓✓ |
19532649 |
for (j = 0; j < s->sys->bpm; j++, block += 64, mb++) { |
424 |
✓✓✓✓
|
17471121 |
if (mb->pos < 64 && get_bits_left(&gb) > 0) { |
425 |
|
4487907 |
dv_decode_ac(&gb, mb, block); |
426 |
|
|
/* if still not finished, no need to parse other blocks */ |
427 |
✓✓ |
4487907 |
if (mb->pos < 64) |
428 |
|
996496 |
break; |
429 |
✓✓ |
3491411 |
if (mb->pos < 127) |
430 |
|
2 |
vs_bit_buffer_damaged = mb_bit_buffer_damaged[mb_index] = 1; |
431 |
|
|
} |
432 |
|
|
} |
433 |
|
|
/* all blocks are finished, so the extra bytes can be used at |
434 |
|
|
* the video segment level */ |
435 |
✓✓ |
3058024 |
if (j >= s->sys->bpm) |
436 |
|
2061528 |
bit_copy(&vs_pb, &gb); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
/* we need a pass over the whole video segment */ |
440 |
|
|
ff_dlog(avctx, "***pass 3 size=%d\n", put_bits_count(&vs_pb)); |
441 |
|
611605 |
block = &sblock[0][0]; |
442 |
|
611605 |
mb = mb_data; |
443 |
|
611605 |
init_get_bits(&gb, vs_bit_buffer, put_bits_count(&vs_pb)); |
444 |
|
611605 |
put_bits32(&vs_pb, 0); // padding must be zeroed |
445 |
|
611605 |
flush_put_bits(&vs_pb); |
446 |
✓✓ |
3669630 |
for (mb_index = 0; mb_index < 5; mb_index++) { |
447 |
✓✓ |
24986375 |
for (j = 0; j < s->sys->bpm; j++) { |
448 |
✓✓✓✓
✓✗ |
21928350 |
if (mb->pos < 64 && get_bits_left(&gb) > 0 && !vs_bit_buffer_damaged) { |
449 |
|
|
ff_dlog(avctx, "start %d:%d\n", mb_index, j); |
450 |
|
3877539 |
dv_decode_ac(&gb, mb, block); |
451 |
|
|
} |
452 |
|
|
|
453 |
✓✓✓✓
|
21928350 |
if (mb->pos >= 64 && mb->pos < 127) { |
454 |
|
2 |
av_log(avctx, AV_LOG_ERROR, |
455 |
|
2 |
"AC EOB marker is absent pos=%d\n", mb->pos); |
456 |
|
2 |
vs_bit_buffer_damaged = 1; |
457 |
|
|
} |
458 |
|
21928350 |
block += 64; |
459 |
|
21928350 |
mb++; |
460 |
|
|
} |
461 |
|
|
} |
462 |
✓✓✓✓
|
611605 |
if (vs_bit_buffer_damaged && !retried) { |
463 |
|
1 |
av_log(avctx, AV_LOG_ERROR, "Concealing bitstream errors\n"); |
464 |
|
1 |
retried = 1; |
465 |
|
1 |
goto retry; |
466 |
|
|
} |
467 |
|
|
|
468 |
|
|
/* compute idct and place blocks */ |
469 |
|
611604 |
block = &sblock[0][0]; |
470 |
|
611604 |
mb = mb_data; |
471 |
✓✓ |
3669624 |
for (mb_index = 0; mb_index < 5; mb_index++) { |
472 |
|
3058020 |
dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y); |
473 |
|
|
|
474 |
|
|
/* idct_put'ting luminance */ |
475 |
✓✓ |
3058020 |
if ((s->sys->pix_fmt == AV_PIX_FMT_YUV420P) || |
476 |
✓✓✓✓
|
2677320 |
(s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) || |
477 |
✓✓✓✓
|
2670636 |
(s->sys->height >= 720 && mb_y != 134)) { |
478 |
|
2168304 |
y_stride = (s->frame->linesize[0] << |
479 |
|
2168304 |
((!is_field_mode[mb_index]) * log2_blocksize)); |
480 |
|
|
} else { |
481 |
|
889716 |
y_stride = (2 << log2_blocksize); |
482 |
|
|
} |
483 |
|
3058020 |
y_ptr = s->frame->data[0] + |
484 |
|
3058020 |
((mb_y * s->frame->linesize[0] + mb_x) << log2_blocksize); |
485 |
✓✓✗✓
|
3058020 |
if (mb_y == 134 && is_field_mode[mb_index]) { |
486 |
|
|
dv100_idct_put_last_row_field_luma(s, y_ptr, s->frame->linesize[0], block); |
487 |
|
|
} else { |
488 |
|
3058020 |
linesize = s->frame->linesize[0] << is_field_mode[mb_index]; |
489 |
|
3058020 |
mb[0].idct_put(y_ptr, linesize, block + 0 * 64); |
490 |
✓✓ |
3058020 |
if (s->sys->video_stype == 4) { /* SD 422 */ |
491 |
|
586440 |
mb[2].idct_put(y_ptr + (1 << log2_blocksize), linesize, block + 2 * 64); |
492 |
|
|
} else { |
493 |
|
2471580 |
mb[1].idct_put(y_ptr + (1 << log2_blocksize), linesize, block + 1 * 64); |
494 |
|
2471580 |
mb[2].idct_put(y_ptr + y_stride, linesize, block + 2 * 64); |
495 |
|
2471580 |
mb[3].idct_put(y_ptr + (1 << log2_blocksize) + y_stride, linesize, block + 3 * 64); |
496 |
|
|
} |
497 |
|
|
} |
498 |
|
3058020 |
mb += 4; |
499 |
|
3058020 |
block += 4 * 64; |
500 |
|
|
|
501 |
|
|
/* idct_put'ting chrominance */ |
502 |
|
6116040 |
c_offset = (((mb_y >> (s->sys->pix_fmt == AV_PIX_FMT_YUV420P)) * s->frame->linesize[1] + |
503 |
✓✓ |
3058020 |
(mb_x >> ((s->sys->pix_fmt == AV_PIX_FMT_YUV411P) ? 2 : 1))) << log2_blocksize); |
504 |
✓✓ |
9174060 |
for (j = 2; j; j--) { |
505 |
|
6116040 |
uint8_t *c_ptr = s->frame->data[j] + c_offset; |
506 |
✓✓✓✓
|
6116040 |
if (s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) { |
507 |
|
|
uint64_t aligned_pixels[64 / 8]; |
508 |
|
13368 |
uint8_t *pixels = (uint8_t *) aligned_pixels; |
509 |
|
|
uint8_t *c_ptr1, *ptr1; |
510 |
|
|
int x, y; |
511 |
|
13368 |
mb->idct_put(pixels, 8, block); |
512 |
✓✓ |
120312 |
for (y = 0; y < (1 << log2_blocksize); y++, c_ptr += s->frame->linesize[j], pixels += 8) { |
513 |
|
106944 |
ptr1 = pixels + ((1 << (log2_blocksize))>>1); |
514 |
|
106944 |
c_ptr1 = c_ptr + (s->frame->linesize[j] << log2_blocksize); |
515 |
✓✓ |
534720 |
for (x = 0; x < (1 << FFMAX(log2_blocksize - 1, 0)); x++) { |
516 |
|
427776 |
c_ptr[x] = pixels[x]; |
517 |
|
427776 |
c_ptr1[x] = ptr1[x]; |
518 |
|
|
} |
519 |
|
|
} |
520 |
|
13368 |
block += 64; |
521 |
|
13368 |
mb++; |
522 |
|
|
} else { |
523 |
✓✓ |
6102672 |
y_stride = (mb_y == 134) ? (1 << log2_blocksize) : |
524 |
|
6084312 |
s->frame->linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize); |
525 |
✓✓✗✓
|
6102672 |
if (mb_y == 134 && is_field_mode[mb_index]) { |
526 |
|
|
dv100_idct_put_last_row_field_chroma(s, c_ptr, s->frame->linesize[j], block); |
527 |
|
|
mb += 2; |
528 |
|
|
block += 2*64; |
529 |
|
|
} else { |
530 |
|
6102672 |
linesize = s->frame->linesize[j] << is_field_mode[mb_index]; |
531 |
|
6102672 |
(mb++)->idct_put(c_ptr, linesize, block); |
532 |
|
6102672 |
block += 64; |
533 |
✓✓ |
6102672 |
if (s->sys->bpm == 8) { |
534 |
|
3580200 |
(mb++)->idct_put(c_ptr + y_stride, linesize, block); |
535 |
|
3580200 |
block += 64; |
536 |
|
|
} |
537 |
|
|
} |
538 |
|
|
} |
539 |
|
|
} |
540 |
|
|
} |
541 |
|
611604 |
return 0; |
542 |
|
|
} |
543 |
|
|
|
544 |
|
|
/* NOTE: exactly one frame must be given (120000 bytes for NTSC, |
545 |
|
|
* 144000 bytes for PAL - or twice those for 50Mbps) */ |
546 |
|
1016 |
static int dvvideo_decode_frame(AVCodecContext *avctx, void *data, |
547 |
|
|
int *got_frame, AVPacket *avpkt) |
548 |
|
|
{ |
549 |
|
1016 |
uint8_t *buf = avpkt->data; |
550 |
|
1016 |
int buf_size = avpkt->size; |
551 |
|
1016 |
DVVideoContext *s = avctx->priv_data; |
552 |
|
1016 |
ThreadFrame frame = { .f = data }; |
553 |
|
|
const uint8_t *vsc_pack; |
554 |
|
|
int apt, is16_9, ret; |
555 |
|
|
const AVDVProfile *sys; |
556 |
|
|
|
557 |
|
1016 |
sys = ff_dv_frame_profile(avctx, s->sys, buf, buf_size); |
558 |
✓✗✗✓
|
1016 |
if (!sys || buf_size < sys->frame_size) { |
559 |
|
|
av_log(avctx, AV_LOG_ERROR, "could not find dv frame profile\n"); |
560 |
|
|
return -1; /* NOTE: we only accept several full frames */ |
561 |
|
|
} |
562 |
|
|
|
563 |
✓✓ |
1016 |
if (sys != s->sys) { |
564 |
|
55 |
ret = ff_dv_init_dynamic_tables(s, sys); |
565 |
✗✓ |
55 |
if (ret < 0) { |
566 |
|
|
av_log(avctx, AV_LOG_ERROR, "Error initializing the work tables.\n"); |
567 |
|
|
return ret; |
568 |
|
|
} |
569 |
|
55 |
dv_init_weight_tables(s, sys); |
570 |
|
55 |
s->sys = sys; |
571 |
|
|
} |
572 |
|
|
|
573 |
|
1016 |
s->frame = frame.f; |
574 |
|
1016 |
frame.f->key_frame = 1; |
575 |
|
1016 |
frame.f->pict_type = AV_PICTURE_TYPE_I; |
576 |
|
1016 |
avctx->pix_fmt = s->sys->pix_fmt; |
577 |
|
1016 |
avctx->framerate = av_inv_q(s->sys->time_base); |
578 |
|
|
|
579 |
|
1016 |
ret = ff_set_dimensions(avctx, s->sys->width, s->sys->height); |
580 |
✗✓ |
1016 |
if (ret < 0) |
581 |
|
|
return ret; |
582 |
|
|
|
583 |
|
|
/* Determine the codec's sample_aspect ratio from the packet */ |
584 |
|
1016 |
vsc_pack = buf + 80 * 5 + 48 + 5; |
585 |
✓✗ |
1016 |
if (*vsc_pack == dv_video_control) { |
586 |
|
1016 |
apt = buf[4] & 0x07; |
587 |
✓✓✓✓
|
1259 |
is16_9 = (vsc_pack[2] & 0x07) == 0x02 || |
588 |
✗✓ |
243 |
(!apt && (vsc_pack[2] & 0x07) == 0x07); |
589 |
|
1016 |
ff_set_sar(avctx, s->sys->sar[is16_9]); |
590 |
|
|
} |
591 |
|
|
|
592 |
✗✓ |
1016 |
if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
593 |
|
|
return ret; |
594 |
|
|
|
595 |
|
|
/* Determine the codec's field order from the packet */ |
596 |
✓✗ |
1016 |
if ( *vsc_pack == dv_video_control ) { |
597 |
✓✓ |
1016 |
if (avctx->height == 720) { |
598 |
|
204 |
frame.f->interlaced_frame = 0; |
599 |
|
204 |
frame.f->top_field_first = 0; |
600 |
✓✓ |
812 |
} else if (avctx->height == 1080) { |
601 |
|
204 |
frame.f->interlaced_frame = 1; |
602 |
|
204 |
frame.f->top_field_first = (vsc_pack[3] & 0x40) == 0x40; |
603 |
|
|
} else { |
604 |
|
608 |
frame.f->interlaced_frame = (vsc_pack[3] & 0x10) == 0x10; |
605 |
|
608 |
frame.f->top_field_first = !(vsc_pack[3] & 0x40); |
606 |
|
|
} |
607 |
|
|
} |
608 |
|
|
|
609 |
|
1016 |
s->buf = buf; |
610 |
|
1016 |
avctx->execute(avctx, dv_decode_video_segment, s->work_chunks, NULL, |
611 |
|
|
dv_work_pool_size(s->sys), sizeof(DVwork_chunk)); |
612 |
|
|
|
613 |
|
1016 |
emms_c(); |
614 |
|
|
|
615 |
|
|
/* return image */ |
616 |
|
1016 |
*got_frame = 1; |
617 |
|
|
|
618 |
|
1016 |
return s->sys->frame_size; |
619 |
|
|
} |
620 |
|
|
|
621 |
|
|
AVCodec ff_dvvideo_decoder = { |
622 |
|
|
.name = "dvvideo", |
623 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"), |
624 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
625 |
|
|
.id = AV_CODEC_ID_DVVIDEO, |
626 |
|
|
.priv_data_size = sizeof(DVVideoContext), |
627 |
|
|
.init = dvvideo_decode_init, |
628 |
|
|
.decode = dvvideo_decode_frame, |
629 |
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS, |
630 |
|
|
.max_lowres = 3, |
631 |
|
|
}; |