GCC Code Coverage Report | |||||||||||||||||||||
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Line | Branch | Exec | Source |
1 |
/* |
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2 |
* Indeo Video Interactive v5 compatible decoder |
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3 |
* Copyright (c) 2009 Maxim Poliakovski |
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4 |
* |
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5 |
* This file is part of FFmpeg. |
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6 |
* |
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7 |
* FFmpeg is free software; you can redistribute it and/or |
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8 |
* modify it under the terms of the GNU Lesser General Public |
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9 |
* License as published by the Free Software Foundation; either |
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10 |
* version 2.1 of the License, or (at your option) any later version. |
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11 |
* |
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12 |
* FFmpeg is distributed in the hope that it will be useful, |
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13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 |
* Lesser General Public License for more details. |
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16 |
* |
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17 |
* You should have received a copy of the GNU Lesser General Public |
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18 |
* License along with FFmpeg; if not, write to the Free Software |
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19 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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20 |
*/ |
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21 |
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22 |
/** |
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23 |
* @file |
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24 |
* Indeo Video Interactive version 5 decoder |
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25 |
* |
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26 |
* Indeo5 data is usually transported within .avi or .mov files. |
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27 |
* Known FOURCCs: 'IV50' |
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28 |
*/ |
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29 |
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30 |
#define BITSTREAM_READER_LE |
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31 |
#include "avcodec.h" |
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32 |
#include "get_bits.h" |
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33 |
#include "internal.h" |
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34 |
#include "ivi.h" |
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35 |
#include "ivi_dsp.h" |
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36 |
#include "indeo5data.h" |
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37 |
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38 |
/** |
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39 |
* Indeo5 frame types. |
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40 |
*/ |
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41 |
enum { |
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42 |
FRAMETYPE_INTRA = 0, |
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43 |
FRAMETYPE_INTER = 1, ///< non-droppable P-frame |
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44 |
FRAMETYPE_INTER_SCAL = 2, ///< droppable P-frame used in the scalability mode |
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45 |
FRAMETYPE_INTER_NOREF = 3, ///< droppable P-frame |
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46 |
FRAMETYPE_NULL = 4 ///< empty frame with no data |
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47 |
}; |
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48 |
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49 |
#define IVI5_PIC_SIZE_ESC 15 |
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50 |
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51 |
/** |
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52 |
* Decode Indeo5 GOP (Group of pictures) header. |
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53 |
* This header is present in key frames only. |
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54 |
* It defines parameters for all frames in a GOP. |
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55 |
* |
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56 |
* @param[in,out] ctx ptr to the decoder context |
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57 |
* @param[in] avctx ptr to the AVCodecContext |
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58 |
* @return result code: 0 = OK, -1 = error |
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59 |
*/ |
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60 |
9 |
static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx) |
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61 |
{ |
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62 |
int result, i, p, tile_size, pic_size_indx, mb_size, blk_size, is_scalable; |
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63 |
9 |
int quant_mat, blk_size_changed = 0; |
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64 |
IVIBandDesc *band, *band1, *band2; |
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65 |
IVIPicConfig pic_conf; |
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66 |
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67 |
9 |
ctx->gop_flags = get_bits(&ctx->gb, 8); |
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68 |
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69 |
✓✗ | 9 |
ctx->gop_hdr_size = (ctx->gop_flags & 1) ? get_bits(&ctx->gb, 16) : 0; |
70 |
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71 |
✗✓ | 9 |
if (ctx->gop_flags & IVI5_IS_PROTECTED) |
72 |
ctx->lock_word = get_bits_long(&ctx->gb, 32); |
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73 |
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74 |
✗✓ | 9 |
tile_size = (ctx->gop_flags & 0x40) ? 64 << get_bits(&ctx->gb, 2) : 0; |
75 |
✗✓ | 9 |
if (tile_size > 256) { |
76 |
av_log(avctx, AV_LOG_ERROR, "Invalid tile size: %d\n", tile_size); |
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77 |
return AVERROR_INVALIDDATA; |
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78 |
} |
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79 |
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80 |
/* decode number of wavelet bands */ |
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81 |
/* num_levels * 3 + 1 */ |
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82 |
9 |
pic_conf.luma_bands = get_bits(&ctx->gb, 2) * 3 + 1; |
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83 |
9 |
pic_conf.chroma_bands = get_bits1(&ctx->gb) * 3 + 1; |
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84 |
✓✗✗✓ |
9 |
is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1; |
85 |
✗✓✗✗ ✗✗ |
9 |
if (is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) { |
86 |
av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n", |
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87 |
pic_conf.luma_bands, pic_conf.chroma_bands); |
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88 |
return AVERROR_INVALIDDATA; |
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89 |
} |
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90 |
|||
91 |
9 |
pic_size_indx = get_bits(&ctx->gb, 4); |
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92 |
✗✓ | 9 |
if (pic_size_indx == IVI5_PIC_SIZE_ESC) { |
93 |
pic_conf.pic_height = get_bits(&ctx->gb, 13); |
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94 |
pic_conf.pic_width = get_bits(&ctx->gb, 13); |
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95 |
} else { |
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96 |
9 |
pic_conf.pic_height = ivi5_common_pic_sizes[pic_size_indx * 2 + 1] << 2; |
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97 |
9 |
pic_conf.pic_width = ivi5_common_pic_sizes[pic_size_indx * 2 ] << 2; |
|
98 |
} |
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99 |
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100 |
✗✓ | 9 |
if (ctx->gop_flags & 2) { |
101 |
avpriv_report_missing_feature(avctx, "YV12 picture format"); |
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102 |
return AVERROR_PATCHWELCOME; |
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103 |
} |
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104 |
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105 |
9 |
pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2; |
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106 |
9 |
pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2; |
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107 |
|||
108 |
✓✗ | 9 |
if (!tile_size) { |
109 |
9 |
pic_conf.tile_height = pic_conf.pic_height; |
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110 |
9 |
pic_conf.tile_width = pic_conf.pic_width; |
|
111 |
} else { |
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112 |
pic_conf.tile_height = pic_conf.tile_width = tile_size; |
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113 |
} |
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114 |
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115 |
/* check if picture layout was changed and reallocate buffers */ |
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116 |
✓✗✓✓ |
9 |
if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) { |
117 |
1 |
result = ff_ivi_init_planes(avctx, ctx->planes, &pic_conf, 0); |
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118 |
✗✓ | 1 |
if (result < 0) { |
119 |
av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n"); |
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120 |
return result; |
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121 |
} |
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122 |
1 |
ctx->pic_conf = pic_conf; |
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123 |
1 |
ctx->is_scalable = is_scalable; |
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124 |
1 |
blk_size_changed = 1; /* force reallocation of the internal structures */ |
|
125 |
} |
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126 |
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127 |
✓✓ | 27 |
for (p = 0; p <= 1; p++) { |
128 |
✓✓✓✓ |
36 |
for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) { |
129 |
18 |
band = &ctx->planes[p].bands[i]; |
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130 |
|||
131 |
18 |
band->is_halfpel = get_bits1(&ctx->gb); |
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132 |
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133 |
18 |
mb_size = get_bits1(&ctx->gb); |
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134 |
18 |
blk_size = 8 >> get_bits1(&ctx->gb); |
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135 |
18 |
mb_size = blk_size << !mb_size; |
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136 |
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137 |
✓✓✗✓ |
18 |
if (p==0 && blk_size==4) { |
138 |
av_log(avctx, AV_LOG_ERROR, "4x4 luma blocks are unsupported!\n"); |
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139 |
return AVERROR_PATCHWELCOME; |
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140 |
} |
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141 |
|||
142 |
✓✓✗✓ |
18 |
blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size; |
143 |
✓✓ | 18 |
if (blk_size_changed) { |
144 |
2 |
band->mb_size = mb_size; |
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145 |
2 |
band->blk_size = blk_size; |
|
146 |
} |
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147 |
|||
148 |
✗✓ | 18 |
if (get_bits1(&ctx->gb)) { |
149 |
avpriv_report_missing_feature(avctx, "Extended transform info"); |
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150 |
return AVERROR_PATCHWELCOME; |
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151 |
} |
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152 |
|||
153 |
/* select transform function and scan pattern according to plane and band number */ |
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154 |
✓✗✗✗ ✓✗ |
18 |
switch ((p << 2) + i) { |
155 |
9 |
case 0: |
|
156 |
9 |
band->inv_transform = ff_ivi_inverse_slant_8x8; |
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157 |
9 |
band->dc_transform = ff_ivi_dc_slant_2d; |
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158 |
9 |
band->scan = ff_zigzag_direct; |
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159 |
9 |
band->transform_size = 8; |
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160 |
9 |
break; |
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161 |
|||
162 |
case 1: |
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163 |
band->inv_transform = ff_ivi_row_slant8; |
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164 |
band->dc_transform = ff_ivi_dc_row_slant; |
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165 |
band->scan = ff_ivi_vertical_scan_8x8; |
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166 |
band->transform_size = 8; |
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167 |
break; |
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168 |
|||
169 |
case 2: |
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170 |
band->inv_transform = ff_ivi_col_slant8; |
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171 |
band->dc_transform = ff_ivi_dc_col_slant; |
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172 |
band->scan = ff_ivi_horizontal_scan_8x8; |
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173 |
band->transform_size = 8; |
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174 |
break; |
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175 |
|||
176 |
case 3: |
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177 |
band->inv_transform = ff_ivi_put_pixels_8x8; |
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178 |
band->dc_transform = ff_ivi_put_dc_pixel_8x8; |
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179 |
band->scan = ff_ivi_horizontal_scan_8x8; |
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180 |
band->transform_size = 8; |
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181 |
break; |
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182 |
|||
183 |
9 |
case 4: |
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184 |
9 |
band->inv_transform = ff_ivi_inverse_slant_4x4; |
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185 |
9 |
band->dc_transform = ff_ivi_dc_slant_2d; |
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186 |
9 |
band->scan = ff_ivi_direct_scan_4x4; |
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187 |
9 |
band->transform_size = 4; |
|
188 |
9 |
break; |
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189 |
} |
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190 |
|||
191 |
✓✓ | 27 |
band->is_2d_trans = band->inv_transform == ff_ivi_inverse_slant_8x8 || |
192 |
✓✗ | 9 |
band->inv_transform == ff_ivi_inverse_slant_4x4; |
193 |
|||
194 |
✗✓ | 18 |
if (band->transform_size != band->blk_size) { |
195 |
av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size); |
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196 |
return AVERROR_INVALIDDATA; |
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197 |
} |
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198 |
|||
199 |
/* select dequant matrix according to plane and band number */ |
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200 |
✓✓ | 18 |
if (!p) { |
201 |
✗✓ | 9 |
quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0; |
202 |
} else { |
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203 |
9 |
quant_mat = 5; |
|
204 |
} |
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205 |
|||
206 |
✓✓ | 18 |
if (band->blk_size == 8) { |
207 |
✗✓ | 9 |
if(quant_mat >= 5){ |
208 |
av_log(avctx, AV_LOG_ERROR, "quant_mat %d too large!\n", quant_mat); |
||
209 |
return -1; |
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210 |
} |
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211 |
9 |
band->intra_base = &ivi5_base_quant_8x8_intra[quant_mat][0]; |
|
212 |
9 |
band->inter_base = &ivi5_base_quant_8x8_inter[quant_mat][0]; |
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213 |
9 |
band->intra_scale = &ivi5_scale_quant_8x8_intra[quant_mat][0]; |
|
214 |
9 |
band->inter_scale = &ivi5_scale_quant_8x8_inter[quant_mat][0]; |
|
215 |
} else { |
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216 |
9 |
band->intra_base = ivi5_base_quant_4x4_intra; |
|
217 |
9 |
band->inter_base = ivi5_base_quant_4x4_inter; |
|
218 |
9 |
band->intra_scale = ivi5_scale_quant_4x4_intra; |
|
219 |
9 |
band->inter_scale = ivi5_scale_quant_4x4_inter; |
|
220 |
} |
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221 |
|||
222 |
✗✓ | 18 |
if (get_bits(&ctx->gb, 2)) { |
223 |
av_log(avctx, AV_LOG_ERROR, "End marker missing!\n"); |
||
224 |
return AVERROR_INVALIDDATA; |
||
225 |
} |
||
226 |
} |
||
227 |
} |
||
228 |
|||
229 |
/* copy chroma parameters into the 2nd chroma plane */ |
||
230 |
✓✓ | 18 |
for (i = 0; i < pic_conf.chroma_bands; i++) { |
231 |
9 |
band1 = &ctx->planes[1].bands[i]; |
|
232 |
9 |
band2 = &ctx->planes[2].bands[i]; |
|
233 |
|||
234 |
9 |
band2->width = band1->width; |
|
235 |
9 |
band2->height = band1->height; |
|
236 |
9 |
band2->mb_size = band1->mb_size; |
|
237 |
9 |
band2->blk_size = band1->blk_size; |
|
238 |
9 |
band2->is_halfpel = band1->is_halfpel; |
|
239 |
9 |
band2->intra_base = band1->intra_base; |
|
240 |
9 |
band2->inter_base = band1->inter_base; |
|
241 |
9 |
band2->intra_scale = band1->intra_scale; |
|
242 |
9 |
band2->inter_scale = band1->inter_scale; |
|
243 |
9 |
band2->scan = band1->scan; |
|
244 |
9 |
band2->inv_transform = band1->inv_transform; |
|
245 |
9 |
band2->dc_transform = band1->dc_transform; |
|
246 |
9 |
band2->is_2d_trans = band1->is_2d_trans; |
|
247 |
9 |
band2->transform_size= band1->transform_size; |
|
248 |
} |
||
249 |
|||
250 |
/* reallocate internal structures if needed */ |
||
251 |
✓✓ | 9 |
if (blk_size_changed) { |
252 |
1 |
result = ff_ivi_init_tiles(ctx->planes, pic_conf.tile_width, |
|
253 |
1 |
pic_conf.tile_height); |
|
254 |
✗✓ | 1 |
if (result < 0) { |
255 |
av_log(avctx, AV_LOG_ERROR, |
||
256 |
"Couldn't reallocate internal structures!\n"); |
||
257 |
return result; |
||
258 |
} |
||
259 |
} |
||
260 |
|||
261 |
✗✓ | 9 |
if (ctx->gop_flags & 8) { |
262 |
if (get_bits(&ctx->gb, 3)) { |
||
263 |
av_log(avctx, AV_LOG_ERROR, "Alignment bits are not zero!\n"); |
||
264 |
return AVERROR_INVALIDDATA; |
||
265 |
} |
||
266 |
|||
267 |
if (get_bits1(&ctx->gb)) |
||
268 |
skip_bits(&ctx->gb, 24); /* skip transparency fill color */ |
||
269 |
} |
||
270 |
|||
271 |
9 |
align_get_bits(&ctx->gb); |
|
272 |
|||
273 |
9 |
skip_bits(&ctx->gb, 23); /* FIXME: unknown meaning */ |
|
274 |
|||
275 |
/* skip GOP extension if any */ |
||
276 |
✗✓ | 9 |
if (get_bits1(&ctx->gb)) { |
277 |
do { |
||
278 |
i = get_bits(&ctx->gb, 16); |
||
279 |
} while (i & 0x8000); |
||
280 |
} |
||
281 |
|||
282 |
9 |
align_get_bits(&ctx->gb); |
|
283 |
|||
284 |
9 |
return 0; |
|
285 |
} |
||
286 |
|||
287 |
|||
288 |
/** |
||
289 |
* Skip a header extension. |
||
290 |
* |
||
291 |
* @param[in,out] gb the GetBit context |
||
292 |
*/ |
||
293 |
static inline int skip_hdr_extension(GetBitContext *gb) |
||
294 |
{ |
||
295 |
int i, len; |
||
296 |
|||
297 |
do { |
||
298 |
len = get_bits(gb, 8); |
||
299 |
if (8*len > get_bits_left(gb)) |
||
300 |
return AVERROR_INVALIDDATA; |
||
301 |
for (i = 0; i < len; i++) skip_bits(gb, 8); |
||
302 |
} while(len); |
||
303 |
|||
304 |
return 0; |
||
305 |
} |
||
306 |
|||
307 |
|||
308 |
/** |
||
309 |
* Decode Indeo5 picture header. |
||
310 |
* |
||
311 |
* @param[in,out] ctx ptr to the decoder context |
||
312 |
* @param[in] avctx ptr to the AVCodecContext |
||
313 |
* @return result code: 0 = OK, -1 = error |
||
314 |
*/ |
||
315 |
134 |
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx) |
|
316 |
{ |
||
317 |
int ret; |
||
318 |
|||
319 |
✗✓ | 134 |
if (get_bits(&ctx->gb, 5) != 0x1F) { |
320 |
av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n"); |
||
321 |
return AVERROR_INVALIDDATA; |
||
322 |
} |
||
323 |
|||
324 |
134 |
ctx->prev_frame_type = ctx->frame_type; |
|
325 |
134 |
ctx->frame_type = get_bits(&ctx->gb, 3); |
|
326 |
✗✓ | 134 |
if (ctx->frame_type >= 5) { |
327 |
av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d \n", ctx->frame_type); |
||
328 |
ctx->frame_type = FRAMETYPE_INTRA; |
||
329 |
return AVERROR_INVALIDDATA; |
||
330 |
} |
||
331 |
|||
332 |
134 |
ctx->frame_num = get_bits(&ctx->gb, 8); |
|
333 |
|||
334 |
✓✓ | 134 |
if (ctx->frame_type == FRAMETYPE_INTRA) { |
335 |
✗✓ | 9 |
if ((ret = decode_gop_header(ctx, avctx)) < 0) { |
336 |
av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n"); |
||
337 |
ctx->gop_invalid = 1; |
||
338 |
return ret; |
||
339 |
} |
||
340 |
9 |
ctx->gop_invalid = 0; |
|
341 |
} |
||
342 |
|||
343 |
✗✓✗✗ |
134 |
if (ctx->frame_type == FRAMETYPE_INTER_SCAL && !ctx->is_scalable) { |
344 |
av_log(avctx, AV_LOG_ERROR, "Scalable inter frame in non scalable stream\n"); |
||
345 |
ctx->frame_type = FRAMETYPE_INTER; |
||
346 |
return AVERROR_INVALIDDATA; |
||
347 |
} |
||
348 |
|||
349 |
✓✓ | 134 |
if (ctx->frame_type != FRAMETYPE_NULL) { |
350 |
133 |
ctx->frame_flags = get_bits(&ctx->gb, 8); |
|
351 |
|||
352 |
✓✗ | 133 |
ctx->pic_hdr_size = (ctx->frame_flags & 1) ? get_bits(&ctx->gb, 24) : 0; |
353 |
|||
354 |
✓✗ | 133 |
ctx->checksum = (ctx->frame_flags & 0x10) ? get_bits(&ctx->gb, 16) : 0; |
355 |
|||
356 |
/* skip unknown extension if any */ |
||
357 |
✗✓ | 133 |
if (ctx->frame_flags & 0x20) |
358 |
skip_hdr_extension(&ctx->gb); /* XXX: untested */ |
||
359 |
|||
360 |
/* decode macroblock huffman codebook */ |
||
361 |
133 |
ret = ff_ivi_dec_huff_desc(&ctx->gb, ctx->frame_flags & 0x40, |
|
362 |
IVI_MB_HUFF, &ctx->mb_vlc, avctx); |
||
363 |
✗✓ | 133 |
if (ret < 0) |
364 |
return ret; |
||
365 |
|||
366 |
133 |
skip_bits(&ctx->gb, 3); /* FIXME: unknown meaning! */ |
|
367 |
} |
||
368 |
|||
369 |
134 |
align_get_bits(&ctx->gb); |
|
370 |
|||
371 |
134 |
return 0; |
|
372 |
} |
||
373 |
|||
374 |
|||
375 |
/** |
||
376 |
* Decode Indeo5 band header. |
||
377 |
* |
||
378 |
* @param[in,out] ctx ptr to the decoder context |
||
379 |
* @param[in,out] band ptr to the band descriptor |
||
380 |
* @param[in] avctx ptr to the AVCodecContext |
||
381 |
* @return result code: 0 = OK, -1 = error |
||
382 |
*/ |
||
383 |
399 |
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, |
|
384 |
AVCodecContext *avctx) |
||
385 |
{ |
||
386 |
int i, ret; |
||
387 |
uint8_t band_flags; |
||
388 |
|||
389 |
399 |
band_flags = get_bits(&ctx->gb, 8); |
|
390 |
|||
391 |
✗✓ | 399 |
if (band_flags & 1) { |
392 |
band->is_empty = 1; |
||
393 |
return 0; |
||
394 |
} |
||
395 |
|||
396 |
✓✗ | 399 |
band->data_size = (ctx->frame_flags & 0x80) ? get_bits(&ctx->gb, 24) : 0; |
397 |
|||
398 |
399 |
band->inherit_mv = band_flags & 2; |
|
399 |
399 |
band->inherit_qdelta = band_flags & 8; |
|
400 |
399 |
band->qdelta_present = band_flags & 4; |
|
401 |
✓✗ | 399 |
if (!band->qdelta_present) band->inherit_qdelta = 1; |
402 |
|||
403 |
/* decode rvmap probability corrections if any */ |
||
404 |
399 |
band->num_corr = 0; /* there are no corrections */ |
|
405 |
✓✓ | 399 |
if (band_flags & 0x10) { |
406 |
252 |
band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */ |
|
407 |
✗✓ | 252 |
if (band->num_corr > 61) { |
408 |
av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n", |
||
409 |
band->num_corr); |
||
410 |
return AVERROR_INVALIDDATA; |
||
411 |
} |
||
412 |
|||
413 |
/* read correction pairs */ |
||
414 |
✓✓ | 2316 |
for (i = 0; i < band->num_corr * 2; i++) |
415 |
2064 |
band->corr[i] = get_bits(&ctx->gb, 8); |
|
416 |
} |
||
417 |
|||
418 |
/* select appropriate rvmap table for this band */ |
||
419 |
✓✓ | 399 |
band->rvmap_sel = (band_flags & 0x40) ? get_bits(&ctx->gb, 3) : 8; |
420 |
|||
421 |
/* decode block huffman codebook */ |
||
422 |
399 |
ret = ff_ivi_dec_huff_desc(&ctx->gb, band_flags & 0x80, IVI_BLK_HUFF, |
|
423 |
&band->blk_vlc, avctx); |
||
424 |
✗✓ | 399 |
if (ret < 0) |
425 |
return ret; |
||
426 |
|||
427 |
399 |
band->checksum_present = get_bits1(&ctx->gb); |
|
428 |
✓✗ | 399 |
if (band->checksum_present) |
429 |
399 |
band->checksum = get_bits(&ctx->gb, 16); |
|
430 |
|||
431 |
399 |
band->glob_quant = get_bits(&ctx->gb, 5); |
|
432 |
|||
433 |
/* skip unknown extension if any */ |
||
434 |
✗✓ | 399 |
if (band_flags & 0x20) { /* XXX: untested */ |
435 |
align_get_bits(&ctx->gb); |
||
436 |
skip_hdr_extension(&ctx->gb); |
||
437 |
} |
||
438 |
|||
439 |
399 |
align_get_bits(&ctx->gb); |
|
440 |
|||
441 |
399 |
return 0; |
|
442 |
} |
||
443 |
|||
444 |
|||
445 |
/** |
||
446 |
* Decode info (block type, cbp, quant delta, motion vector) |
||
447 |
* for all macroblocks in the current tile. |
||
448 |
* |
||
449 |
* @param[in,out] ctx ptr to the decoder context |
||
450 |
* @param[in,out] band ptr to the band descriptor |
||
451 |
* @param[in,out] tile ptr to the tile descriptor |
||
452 |
* @param[in] avctx ptr to the AVCodecContext |
||
453 |
* @return result code: 0 = OK, -1 = error |
||
454 |
*/ |
||
455 |
399 |
static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, |
|
456 |
IVITile *tile, AVCodecContext *avctx) |
||
457 |
{ |
||
458 |
int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, |
||
459 |
mv_scale, blks_per_mb, s; |
||
460 |
IVIMbInfo *mb, *ref_mb; |
||
461 |
399 |
int row_offset = band->mb_size * band->pitch; |
|
462 |
|||
463 |
399 |
mb = tile->mbs; |
|
464 |
399 |
ref_mb = tile->ref_mbs; |
|
465 |
399 |
offs = tile->ypos * band->pitch + tile->xpos; |
|
466 |
|||
467 |
✓✓ | 399 |
if (!ref_mb && |
468 |
✗✓✗✗ ✗✓ |
133 |
((band->qdelta_present && band->inherit_qdelta) || band->inherit_mv)) |
469 |
return AVERROR_INVALIDDATA; |
||
470 |
|||
471 |
✗✓ | 399 |
if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) { |
472 |
av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches parameters %d\n", |
||
473 |
tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)); |
||
474 |
return AVERROR_INVALIDDATA; |
||
475 |
} |
||
476 |
|||
477 |
/* scale factor for motion vectors */ |
||
478 |
399 |
mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3); |
|
479 |
399 |
mv_x = mv_y = 0; |
|
480 |
|||
481 |
✓✓ | 5187 |
for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) { |
482 |
4788 |
mb_offset = offs; |
|
483 |
|||
484 |
✓✓ | 76608 |
for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) { |
485 |
71820 |
mb->xpos = x; |
|
486 |
71820 |
mb->ypos = y; |
|
487 |
71820 |
mb->buf_offs = mb_offset; |
|
488 |
|||
489 |
✓✓ | 71820 |
if (get_bits1(&ctx->gb)) { |
490 |
✗✓ | 27025 |
if (ctx->frame_type == FRAMETYPE_INTRA) { |
491 |
av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n"); |
||
492 |
return AVERROR_INVALIDDATA; |
||
493 |
} |
||
494 |
27025 |
mb->type = 1; /* empty macroblocks are always INTER */ |
|
495 |
27025 |
mb->cbp = 0; /* all blocks are empty */ |
|
496 |
|||
497 |
27025 |
mb->q_delta = 0; |
|
498 |
✓✓✓✗ ✗✓ |
27025 |
if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) { |
499 |
mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, |
||
500 |
IVI_VLC_BITS, 1); |
||
501 |
mb->q_delta = IVI_TOSIGNED(mb->q_delta); |
||
502 |
} |
||
503 |
|||
504 |
27025 |
mb->mv_x = mb->mv_y = 0; /* no motion vector coded */ |
|
505 |
✓✓✓✗ |
27025 |
if (band->inherit_mv && ref_mb){ |
506 |
/* motion vector inheritance */ |
||
507 |
✓✗ | 19295 |
if (mv_scale) { |
508 |
19295 |
mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); |
|
509 |
19295 |
mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); |
|
510 |
} else { |
||
511 |
mb->mv_x = ref_mb->mv_x; |
||
512 |
mb->mv_y = ref_mb->mv_y; |
||
513 |
} |
||
514 |
} |
||
515 |
} else { |
||
516 |
✓✓✓✗ |
44795 |
if (band->inherit_mv && ref_mb) { |
517 |
28585 |
mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */ |
|
518 |
✓✓ | 16210 |
} else if (ctx->frame_type == FRAMETYPE_INTRA) { |
519 |
1620 |
mb->type = 0; /* mb_type is always INTRA for intra-frames */ |
|
520 |
} else { |
||
521 |
14590 |
mb->type = get_bits1(&ctx->gb); |
|
522 |
} |
||
523 |
|||
524 |
✓✓ | 44795 |
blks_per_mb = band->mb_size != band->blk_size ? 4 : 1; |
525 |
44795 |
mb->cbp = get_bits(&ctx->gb, blks_per_mb); |
|
526 |
|||
527 |
44795 |
mb->q_delta = 0; |
|
528 |
✗✓ | 44795 |
if (band->qdelta_present) { |
529 |
if (band->inherit_qdelta) { |
||
530 |
if (ref_mb) mb->q_delta = ref_mb->q_delta; |
||
531 |
} else if (mb->cbp || (!band->plane && !band->band_num && |
||
532 |
(ctx->frame_flags & 8))) { |
||
533 |
mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, |
||
534 |
IVI_VLC_BITS, 1); |
||
535 |
mb->q_delta = IVI_TOSIGNED(mb->q_delta); |
||
536 |
} |
||
537 |
} |
||
538 |
|||
539 |
✓✓ | 44795 |
if (!mb->type) { |
540 |
13239 |
mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */ |
|
541 |
} else { |
||
542 |
✓✓✓✗ |
31556 |
if (band->inherit_mv && ref_mb){ |
543 |
/* motion vector inheritance */ |
||
544 |
✓✗ | 19759 |
if (mv_scale) { |
545 |
19759 |
mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); |
|
546 |
19759 |
mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); |
|
547 |
} else { |
||
548 |
mb->mv_x = ref_mb->mv_x; |
||
549 |
mb->mv_y = ref_mb->mv_y; |
||
550 |
} |
||
551 |
} else { |
||
552 |
/* decode motion vector deltas */ |
||
553 |
11797 |
mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, |
|
554 |
IVI_VLC_BITS, 1); |
||
555 |
11797 |
mv_y += IVI_TOSIGNED(mv_delta); |
|
556 |
11797 |
mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, |
|
557 |
IVI_VLC_BITS, 1); |
||
558 |
11797 |
mv_x += IVI_TOSIGNED(mv_delta); |
|
559 |
11797 |
mb->mv_x = mv_x; |
|
560 |
11797 |
mb->mv_y = mv_y; |
|
561 |
} |
||
562 |
} |
||
563 |
} |
||
564 |
|||
565 |
71820 |
s= band->is_halfpel; |
|
566 |
✓✓ | 71820 |
if (mb->type) |
567 |
✓✗ | 58581 |
if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 || |
568 |
58581 |
x + ((mb->mv_x+s)>>s) + band->mb_size - 1 |
|
569 |
✗✓ | 58581 |
+ (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize - 1) { |
570 |
av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y); |
||
571 |
return AVERROR_INVALIDDATA; |
||
572 |
} |
||
573 |
|||
574 |
71820 |
mb++; |
|
575 |
✓✓ | 71820 |
if (ref_mb) |
576 |
47880 |
ref_mb++; |
|
577 |
71820 |
mb_offset += band->mb_size; |
|
578 |
} |
||
579 |
|||
580 |
4788 |
offs += row_offset; |
|
581 |
} |
||
582 |
|||
583 |
399 |
align_get_bits(&ctx->gb); |
|
584 |
|||
585 |
399 |
return 0; |
|
586 |
} |
||
587 |
|||
588 |
|||
589 |
/** |
||
590 |
* Switch buffers. |
||
591 |
* |
||
592 |
* @param[in,out] ctx ptr to the decoder context |
||
593 |
*/ |
||
594 |
134 |
static void switch_buffers(IVI45DecContext *ctx) |
|
595 |
{ |
||
596 |
✓✗✗✓ |
134 |
switch (ctx->prev_frame_type) { |
597 |
133 |
case FRAMETYPE_INTRA: |
|
598 |
case FRAMETYPE_INTER: |
||
599 |
133 |
ctx->buf_switch ^= 1; |
|
600 |
133 |
ctx->dst_buf = ctx->buf_switch; |
|
601 |
133 |
ctx->ref_buf = ctx->buf_switch ^ 1; |
|
602 |
133 |
break; |
|
603 |
case FRAMETYPE_INTER_SCAL: |
||
604 |
if (!ctx->inter_scal) { |
||
605 |
ctx->ref2_buf = 2; |
||
606 |
ctx->inter_scal = 1; |
||
607 |
} |
||
608 |
FFSWAP(int, ctx->dst_buf, ctx->ref2_buf); |
||
609 |
ctx->ref_buf = ctx->ref2_buf; |
||
610 |
break; |
||
611 |
case FRAMETYPE_INTER_NOREF: |
||
612 |
break; |
||
613 |
} |
||
614 |
|||
615 |
✓✓✓✗ |
134 |
switch (ctx->frame_type) { |
616 |
9 |
case FRAMETYPE_INTRA: |
|
617 |
9 |
ctx->buf_switch = 0; |
|
618 |
/* FALLTHROUGH */ |
||
619 |
133 |
case FRAMETYPE_INTER: |
|
620 |
133 |
ctx->inter_scal = 0; |
|
621 |
133 |
ctx->dst_buf = ctx->buf_switch; |
|
622 |
133 |
ctx->ref_buf = ctx->buf_switch ^ 1; |
|
623 |
133 |
break; |
|
624 |
1 |
case FRAMETYPE_INTER_SCAL: |
|
625 |
case FRAMETYPE_INTER_NOREF: |
||
626 |
case FRAMETYPE_NULL: |
||
627 |
1 |
break; |
|
628 |
} |
||
629 |
134 |
} |
|
630 |
|||
631 |
|||
632 |
268 |
static int is_nonnull_frame(IVI45DecContext *ctx) |
|
633 |
{ |
||
634 |
268 |
return ctx->frame_type != FRAMETYPE_NULL; |
|
635 |
} |
||
636 |
|||
637 |
|||
638 |
/** |
||
639 |
* Initialize Indeo5 decoder. |
||
640 |
*/ |
||
641 |
2 |
static av_cold int decode_init(AVCodecContext *avctx) |
|
642 |
{ |
||
643 |
2 |
IVI45DecContext *ctx = avctx->priv_data; |
|
644 |
int result; |
||
645 |
|||
646 |
2 |
ctx->gop_invalid = 1; |
|
647 |
|||
648 |
2 |
ff_ivi_init_static_vlc(); |
|
649 |
|||
650 |
/* copy rvmap tables in our context so we can apply changes to them */ |
||
651 |
2 |
memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs)); |
|
652 |
|||
653 |
/* set the initial picture layout according to the basic profile: |
||
654 |
there is only one band per plane (no scalability), only one tile (no local decoding) |
||
655 |
and picture format = YVU9 */ |
||
656 |
2 |
ctx->pic_conf.pic_width = avctx->width; |
|
657 |
2 |
ctx->pic_conf.pic_height = avctx->height; |
|
658 |
2 |
ctx->pic_conf.chroma_width = (avctx->width + 3) >> 2; |
|
659 |
2 |
ctx->pic_conf.chroma_height = (avctx->height + 3) >> 2; |
|
660 |
2 |
ctx->pic_conf.tile_width = avctx->width; |
|
661 |
2 |
ctx->pic_conf.tile_height = avctx->height; |
|
662 |
2 |
ctx->pic_conf.luma_bands = ctx->pic_conf.chroma_bands = 1; |
|
663 |
|||
664 |
2 |
result = ff_ivi_init_planes(avctx, ctx->planes, &ctx->pic_conf, 0); |
|
665 |
✗✓ | 2 |
if (result) { |
666 |
av_log(avctx, AV_LOG_ERROR, "Couldn't allocate color planes!\n"); |
||
667 |
return AVERROR_INVALIDDATA; |
||
668 |
} |
||
669 |
|||
670 |
2 |
ctx->buf_switch = 0; |
|
671 |
2 |
ctx->inter_scal = 0; |
|
672 |
|||
673 |
2 |
ctx->decode_pic_hdr = decode_pic_hdr; |
|
674 |
2 |
ctx->decode_band_hdr = decode_band_hdr; |
|
675 |
2 |
ctx->decode_mb_info = decode_mb_info; |
|
676 |
2 |
ctx->switch_buffers = switch_buffers; |
|
677 |
2 |
ctx->is_nonnull_frame = is_nonnull_frame; |
|
678 |
|||
679 |
2 |
ctx->is_indeo4 = 0; |
|
680 |
|||
681 |
2 |
avctx->pix_fmt = AV_PIX_FMT_YUV410P; |
|
682 |
|||
683 |
2 |
return 0; |
|
684 |
} |
||
685 |
|||
686 |
AVCodec ff_indeo5_decoder = { |
||
687 |
.name = "indeo5", |
||
688 |
.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 5"), |
||
689 |
.type = AVMEDIA_TYPE_VIDEO, |
||
690 |
.id = AV_CODEC_ID_INDEO5, |
||
691 |
.priv_data_size = sizeof(IVI45DecContext), |
||
692 |
.init = decode_init, |
||
693 |
.close = ff_ivi_decode_close, |
||
694 |
.decode = ff_ivi_decode_frame, |
||
695 |
.capabilities = AV_CODEC_CAP_DR1, |
||
696 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, |
||
697 |
}; |
Generated by: GCOVR (Version 4.2) |