GCC Code Coverage Report | |||||||||||||||||||||
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Line | Branch | Exec | Source |
1 |
/* |
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2 |
* CDXL video decoder |
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3 |
* Copyright (c) 2011-2012 Paul B Mahol |
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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 |
* Commodore CDXL video decoder |
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25 |
* @author Paul B Mahol |
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26 |
*/ |
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27 |
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28 |
#define UNCHECKED_BITSTREAM_READER 1 |
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29 |
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30 |
#include "libavutil/intreadwrite.h" |
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31 |
#include "libavutil/imgutils.h" |
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32 |
#include "avcodec.h" |
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33 |
#include "bytestream.h" |
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34 |
#include "get_bits.h" |
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35 |
#include "internal.h" |
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36 |
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37 |
#define BIT_PLANAR 0x00 |
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38 |
#define CHUNKY 0x20 |
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39 |
#define BYTE_PLANAR 0x40 |
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40 |
#define BIT_LINE 0x80 |
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41 |
#define BYTE_LINE 0xC0 |
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42 |
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43 |
typedef struct CDXLVideoContext { |
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44 |
AVCodecContext *avctx; |
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45 |
int bpp; |
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46 |
int format; |
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47 |
int padded_bits; |
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48 |
const uint8_t *palette; |
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49 |
int palette_size; |
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50 |
const uint8_t *video; |
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51 |
int video_size; |
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52 |
uint8_t *new_video; |
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53 |
int new_video_size; |
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54 |
} CDXLVideoContext; |
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55 |
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56 |
11 |
static av_cold int cdxl_decode_init(AVCodecContext *avctx) |
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57 |
{ |
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58 |
11 |
CDXLVideoContext *c = avctx->priv_data; |
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59 |
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60 |
11 |
c->new_video_size = 0; |
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61 |
11 |
c->avctx = avctx; |
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62 |
|||
63 |
11 |
return 0; |
|
64 |
} |
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65 |
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66 |
90 |
static void import_palette(CDXLVideoContext *c, uint32_t *new_palette) |
|
67 |
{ |
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68 |
int i; |
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69 |
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70 |
✓✓ | 4554 |
for (i = 0; i < c->palette_size / 2; i++) { |
71 |
4464 |
unsigned rgb = AV_RB16(&c->palette[i * 2]); |
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72 |
4464 |
unsigned r = ((rgb >> 8) & 0xF) * 0x11; |
|
73 |
4464 |
unsigned g = ((rgb >> 4) & 0xF) * 0x11; |
|
74 |
4464 |
unsigned b = (rgb & 0xF) * 0x11; |
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75 |
4464 |
AV_WN32(&new_palette[i], (0xFFU << 24) | (r << 16) | (g << 8) | b); |
|
76 |
} |
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77 |
90 |
} |
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78 |
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79 |
79 |
static void bitplanar2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
80 |
{ |
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81 |
GetBitContext gb; |
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82 |
int x, y, plane; |
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83 |
|||
84 |
✗✓ | 79 |
if (init_get_bits8(&gb, c->video, c->video_size) < 0) |
85 |
return; |
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86 |
✓✓ | 489 |
for (plane = 0; plane < c->bpp; plane++) { |
87 |
✓✓ | 43050 |
for (y = 0; y < c->avctx->height; y++) { |
88 |
✓✓ | 6629520 |
for (x = 0; x < c->avctx->width; x++) |
89 |
6586880 |
out[linesize * y + x] |= get_bits1(&gb) << plane; |
|
90 |
42640 |
skip_bits(&gb, c->padded_bits); |
|
91 |
} |
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92 |
} |
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93 |
} |
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94 |
|||
95 |
11 |
static void bitline2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
96 |
{ |
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97 |
GetBitContext gb; |
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98 |
int x, y, plane; |
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99 |
|||
100 |
✗✓ | 11 |
if (init_get_bits8(&gb, c->video, c->video_size) < 0) |
101 |
return; |
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102 |
✓✓ | 1441 |
for (y = 0; y < c->avctx->height; y++) { |
103 |
✓✓ | 10010 |
for (plane = 0; plane < c->bpp; plane++) { |
104 |
✓✓ | 1398540 |
for (x = 0; x < c->avctx->width; x++) |
105 |
1389960 |
out[linesize * y + x] |= get_bits1(&gb) << plane; |
|
106 |
8580 |
skip_bits(&gb, c->padded_bits); |
|
107 |
} |
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108 |
} |
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109 |
} |
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110 |
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111 |
static void chunky2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
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112 |
{ |
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113 |
GetByteContext gb; |
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114 |
int y; |
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115 |
|||
116 |
bytestream2_init(&gb, c->video, c->video_size); |
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117 |
for (y = 0; y < c->avctx->height; y++) { |
||
118 |
bytestream2_get_buffer(&gb, out + linesize * y, c->avctx->width * 3); |
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119 |
} |
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120 |
} |
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121 |
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122 |
90 |
static void import_format(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
123 |
{ |
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124 |
90 |
memset(out, 0, linesize * c->avctx->height); |
|
125 |
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126 |
✓✓✗✗ |
90 |
switch (c->format) { |
127 |
79 |
case BIT_PLANAR: |
|
128 |
79 |
bitplanar2chunky(c, linesize, out); |
|
129 |
79 |
break; |
|
130 |
11 |
case BIT_LINE: |
|
131 |
11 |
bitline2chunky(c, linesize, out); |
|
132 |
11 |
break; |
|
133 |
case CHUNKY: |
||
134 |
chunky2chunky(c, linesize, out); |
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135 |
break; |
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136 |
} |
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137 |
90 |
} |
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138 |
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139 |
59 |
static void cdxl_decode_rgb(CDXLVideoContext *c, AVFrame *frame) |
|
140 |
{ |
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141 |
59 |
uint32_t *new_palette = (uint32_t *)frame->data[1]; |
|
142 |
|||
143 |
59 |
memset(frame->data[1], 0, AVPALETTE_SIZE); |
|
144 |
59 |
import_palette(c, new_palette); |
|
145 |
59 |
import_format(c, frame->linesize[0], frame->data[0]); |
|
146 |
59 |
} |
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147 |
|||
148 |
static void cdxl_decode_raw(CDXLVideoContext *c, AVFrame *frame) |
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149 |
{ |
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150 |
import_format(c, frame->linesize[0], frame->data[0]); |
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151 |
} |
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152 |
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153 |
28 |
static void cdxl_decode_ham6(CDXLVideoContext *c, AVFrame *frame) |
|
154 |
{ |
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155 |
28 |
AVCodecContext *avctx = c->avctx; |
|
156 |
uint32_t new_palette[16], r, g, b; |
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157 |
uint8_t *ptr, *out, index, op; |
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158 |
int x, y; |
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159 |
|||
160 |
28 |
ptr = c->new_video; |
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161 |
28 |
out = frame->data[0]; |
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162 |
|||
163 |
28 |
import_palette(c, new_palette); |
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164 |
28 |
import_format(c, avctx->width, c->new_video); |
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165 |
|||
166 |
✓✓ | 3498 |
for (y = 0; y < avctx->height; y++) { |
167 |
3470 |
r = new_palette[0] & 0xFF0000; |
|
168 |
3470 |
g = new_palette[0] & 0xFF00; |
|
169 |
3470 |
b = new_palette[0] & 0xFF; |
|
170 |
✓✓ | 561530 |
for (x = 0; x < avctx->width; x++) { |
171 |
558060 |
index = *ptr++; |
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172 |
558060 |
op = index >> 4; |
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173 |
558060 |
index &= 15; |
|
174 |
✓✓✓✓ ✗ |
558060 |
switch (op) { |
175 |
131279 |
case 0: |
|
176 |
131279 |
r = new_palette[index] & 0xFF0000; |
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177 |
131279 |
g = new_palette[index] & 0xFF00; |
|
178 |
131279 |
b = new_palette[index] & 0xFF; |
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179 |
131279 |
break; |
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180 |
108493 |
case 1: |
|
181 |
108493 |
b = index * 0x11; |
|
182 |
108493 |
break; |
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183 |
212370 |
case 2: |
|
184 |
212370 |
r = index * 0x11 << 16; |
|
185 |
212370 |
break; |
|
186 |
105918 |
case 3: |
|
187 |
105918 |
g = index * 0x11 << 8; |
|
188 |
105918 |
break; |
|
189 |
} |
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190 |
558060 |
AV_WL24(out + x * 3, r | g | b); |
|
191 |
} |
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192 |
3470 |
out += frame->linesize[0]; |
|
193 |
} |
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194 |
28 |
} |
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195 |
|||
196 |
3 |
static void cdxl_decode_ham8(CDXLVideoContext *c, AVFrame *frame) |
|
197 |
{ |
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198 |
3 |
AVCodecContext *avctx = c->avctx; |
|
199 |
uint32_t new_palette[64], r, g, b; |
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200 |
uint8_t *ptr, *out, index, op; |
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201 |
int x, y; |
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202 |
|||
203 |
3 |
ptr = c->new_video; |
|
204 |
3 |
out = frame->data[0]; |
|
205 |
|||
206 |
3 |
import_palette(c, new_palette); |
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207 |
3 |
import_format(c, avctx->width, c->new_video); |
|
208 |
|||
209 |
✓✓ | 387 |
for (y = 0; y < avctx->height; y++) { |
210 |
384 |
r = new_palette[0] & 0xFF0000; |
|
211 |
384 |
g = new_palette[0] & 0xFF00; |
|
212 |
384 |
b = new_palette[0] & 0xFF; |
|
213 |
✓✓ | 67968 |
for (x = 0; x < avctx->width; x++) { |
214 |
67584 |
index = *ptr++; |
|
215 |
67584 |
op = index >> 6; |
|
216 |
67584 |
index &= 63; |
|
217 |
✓✓✓✓ ✗ |
67584 |
switch (op) { |
218 |
3417 |
case 0: |
|
219 |
3417 |
r = new_palette[index] & 0xFF0000; |
|
220 |
3417 |
g = new_palette[index] & 0xFF00; |
|
221 |
3417 |
b = new_palette[index] & 0xFF; |
|
222 |
3417 |
break; |
|
223 |
627 |
case 1: |
|
224 |
627 |
b = (index << 2) | (b & 3); |
|
225 |
627 |
break; |
|
226 |
1122 |
case 2: |
|
227 |
1122 |
r = (index << 18) | (r & (3 << 16)); |
|
228 |
1122 |
break; |
|
229 |
62418 |
case 3: |
|
230 |
62418 |
g = (index << 10) | (g & (3 << 8)); |
|
231 |
62418 |
break; |
|
232 |
} |
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233 |
67584 |
AV_WL24(out + x * 3, r | g | b); |
|
234 |
} |
||
235 |
384 |
out += frame->linesize[0]; |
|
236 |
} |
||
237 |
3 |
} |
|
238 |
|||
239 |
90 |
static int cdxl_decode_frame(AVCodecContext *avctx, void *data, |
|
240 |
int *got_frame, AVPacket *pkt) |
||
241 |
{ |
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242 |
90 |
CDXLVideoContext *c = avctx->priv_data; |
|
243 |
90 |
AVFrame * const p = data; |
|
244 |
90 |
int ret, w, h, encoding, aligned_width, buf_size = pkt->size; |
|
245 |
90 |
const uint8_t *buf = pkt->data; |
|
246 |
|||
247 |
✗✓ | 90 |
if (buf_size < 32) |
248 |
return AVERROR_INVALIDDATA; |
||
249 |
90 |
encoding = buf[1] & 7; |
|
250 |
90 |
c->format = buf[1] & 0xE0; |
|
251 |
90 |
w = AV_RB16(&buf[14]); |
|
252 |
90 |
h = AV_RB16(&buf[16]); |
|
253 |
90 |
c->bpp = buf[19]; |
|
254 |
90 |
c->palette_size = AV_RB16(&buf[20]); |
|
255 |
90 |
c->palette = buf + 32; |
|
256 |
90 |
c->video = c->palette + c->palette_size; |
|
257 |
90 |
c->video_size = buf_size - c->palette_size - 32; |
|
258 |
|||
259 |
✗✓ | 90 |
if (c->palette_size > 512) |
260 |
return AVERROR_INVALIDDATA; |
||
261 |
✗✓ | 90 |
if (buf_size < c->palette_size + 32) |
262 |
return AVERROR_INVALIDDATA; |
||
263 |
✗✓ | 90 |
if (c->bpp < 1) |
264 |
return AVERROR_INVALIDDATA; |
||
265 |
✓✓✗✓ ✗✗ |
90 |
if (c->format != BIT_PLANAR && c->format != BIT_LINE && c->format != CHUNKY) { |
266 |
avpriv_request_sample(avctx, "Pixel format 0x%0x", c->format); |
||
267 |
return AVERROR_PATCHWELCOME; |
||
268 |
} |
||
269 |
|||
270 |
✗✓ | 90 |
if ((ret = ff_set_dimensions(avctx, w, h)) < 0) |
271 |
return ret; |
||
272 |
|||
273 |
✗✓ | 90 |
if (c->format == CHUNKY) |
274 |
aligned_width = avctx->width; |
||
275 |
else |
||
276 |
90 |
aligned_width = FFALIGN(c->avctx->width, 16); |
|
277 |
90 |
c->padded_bits = aligned_width - c->avctx->width; |
|
278 |
✗✓ | 90 |
if (c->video_size < aligned_width * avctx->height * (int64_t)c->bpp / 8) |
279 |
return AVERROR_INVALIDDATA; |
||
280 |
✓✓✓✗ ✓✗✓✗ |
90 |
if (!encoding && c->palette_size && c->bpp <= 8 && c->format != CHUNKY) { |
281 |
59 |
avctx->pix_fmt = AV_PIX_FMT_PAL8; |
|
282 |
✓✗✓✓ ✓✗✓✗ |
31 |
} else if (encoding == 1 && (c->bpp == 6 || c->bpp == 8) && c->format != CHUNKY) { |
283 |
✗✓ | 31 |
if (c->palette_size != (1 << (c->bpp - 1))) |
284 |
return AVERROR_INVALIDDATA; |
||
285 |
31 |
avctx->pix_fmt = AV_PIX_FMT_BGR24; |
|
286 |
} else if (!encoding && c->bpp == 24 && c->format == CHUNKY && |
||
287 |
!c->palette_size) { |
||
288 |
avctx->pix_fmt = AV_PIX_FMT_RGB24; |
||
289 |
} else { |
||
290 |
avpriv_request_sample(avctx, "Encoding %d, bpp %d and format 0x%x", |
||
291 |
encoding, c->bpp, c->format); |
||
292 |
return AVERROR_PATCHWELCOME; |
||
293 |
} |
||
294 |
|||
295 |
✗✓ | 90 |
if ((ret = ff_get_buffer(avctx, p, 0)) < 0) |
296 |
return ret; |
||
297 |
90 |
p->pict_type = AV_PICTURE_TYPE_I; |
|
298 |
90 |
p->key_frame = 1; |
|
299 |
|||
300 |
✓✓ | 90 |
if (encoding) { |
301 |
31 |
av_fast_padded_malloc(&c->new_video, &c->new_video_size, |
|
302 |
31 |
h * w + AV_INPUT_BUFFER_PADDING_SIZE); |
|
303 |
✗✓ | 31 |
if (!c->new_video) |
304 |
return AVERROR(ENOMEM); |
||
305 |
✓✓ | 31 |
if (c->bpp == 8) |
306 |
3 |
cdxl_decode_ham8(c, p); |
|
307 |
else |
||
308 |
28 |
cdxl_decode_ham6(c, p); |
|
309 |
✓✗ | 59 |
} else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
310 |
59 |
cdxl_decode_rgb(c, p); |
|
311 |
} else { |
||
312 |
cdxl_decode_raw(c, p); |
||
313 |
} |
||
314 |
90 |
*got_frame = 1; |
|
315 |
|||
316 |
90 |
return buf_size; |
|
317 |
} |
||
318 |
|||
319 |
11 |
static av_cold int cdxl_decode_end(AVCodecContext *avctx) |
|
320 |
{ |
||
321 |
11 |
CDXLVideoContext *c = avctx->priv_data; |
|
322 |
|||
323 |
11 |
av_freep(&c->new_video); |
|
324 |
|||
325 |
11 |
return 0; |
|
326 |
} |
||
327 |
|||
328 |
AVCodec ff_cdxl_decoder = { |
||
329 |
.name = "cdxl", |
||
330 |
.long_name = NULL_IF_CONFIG_SMALL("Commodore CDXL video"), |
||
331 |
.type = AVMEDIA_TYPE_VIDEO, |
||
332 |
.id = AV_CODEC_ID_CDXL, |
||
333 |
.priv_data_size = sizeof(CDXLVideoContext), |
||
334 |
.init = cdxl_decode_init, |
||
335 |
.close = cdxl_decode_end, |
||
336 |
.decode = cdxl_decode_frame, |
||
337 |
.capabilities = AV_CODEC_CAP_DR1, |
||
338 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
||
339 |
}; |
Generated by: GCOVR (Version 4.2) |