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 |
|||
28 |
#define UNCHECKED_BITSTREAM_READER 1 |
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29 |
|||
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 |
|||
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 type; |
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47 |
int format; |
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48 |
int padded_bits; |
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49 |
const uint8_t *palette; |
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50 |
int palette_size; |
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51 |
const uint8_t *video; |
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52 |
int video_size; |
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53 |
uint8_t *new_video; |
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54 |
int new_video_size; |
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55 |
} CDXLVideoContext; |
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56 |
|||
57 |
11 |
static av_cold int cdxl_decode_init(AVCodecContext *avctx) |
|
58 |
{ |
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59 |
11 |
CDXLVideoContext *c = avctx->priv_data; |
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60 |
|||
61 |
11 |
c->new_video_size = 0; |
|
62 |
11 |
c->avctx = avctx; |
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63 |
|||
64 |
11 |
return 0; |
|
65 |
} |
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66 |
|||
67 |
90 |
static void import_palette(CDXLVideoContext *c, uint32_t *new_palette) |
|
68 |
{ |
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69 |
✓✗ | 90 |
if (c->type == 1) { |
70 |
✓✓ | 4554 |
for (int 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; |
|
75 |
4464 |
AV_WN32(&new_palette[i], (0xFFU << 24) | (r << 16) | (g << 8) | b); |
|
76 |
} |
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77 |
} else { |
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78 |
for (int i = 0; i < c->palette_size / 3; i++) { |
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79 |
unsigned rgb = AV_RB24(&c->palette[i * 3]); |
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80 |
AV_WN32(&new_palette[i], (0xFFU << 24) | rgb); |
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81 |
} |
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82 |
} |
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83 |
90 |
} |
|
84 |
|||
85 |
79 |
static void bitplanar2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
86 |
{ |
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87 |
GetBitContext gb; |
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88 |
int x, y, plane; |
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89 |
|||
90 |
✗✓ | 79 |
if (init_get_bits8(&gb, c->video, c->video_size) < 0) |
91 |
return; |
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92 |
✓✓ | 489 |
for (plane = 0; plane < c->bpp; plane++) { |
93 |
✓✓ | 43050 |
for (y = 0; y < c->avctx->height; y++) { |
94 |
✓✓ | 6629520 |
for (x = 0; x < c->avctx->width; x++) |
95 |
6586880 |
out[linesize * y + x] |= get_bits1(&gb) << plane; |
|
96 |
42640 |
skip_bits(&gb, c->padded_bits); |
|
97 |
} |
||
98 |
} |
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99 |
} |
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100 |
|||
101 |
11 |
static void bitline2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
102 |
{ |
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103 |
GetBitContext gb; |
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104 |
int x, y, plane; |
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105 |
|||
106 |
✗✓ | 11 |
if (init_get_bits8(&gb, c->video, c->video_size) < 0) |
107 |
return; |
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108 |
✓✓ | 1441 |
for (y = 0; y < c->avctx->height; y++) { |
109 |
✓✓ | 10010 |
for (plane = 0; plane < c->bpp; plane++) { |
110 |
✓✓ | 1398540 |
for (x = 0; x < c->avctx->width; x++) |
111 |
1389960 |
out[linesize * y + x] |= get_bits1(&gb) << plane; |
|
112 |
8580 |
skip_bits(&gb, c->padded_bits); |
|
113 |
} |
||
114 |
} |
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115 |
} |
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116 |
|||
117 |
static void chunky2chunky(CDXLVideoContext *c, int linesize, uint8_t *out) |
||
118 |
{ |
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119 |
GetByteContext gb; |
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120 |
int y; |
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121 |
|||
122 |
bytestream2_init(&gb, c->video, c->video_size); |
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123 |
for (y = 0; y < c->avctx->height; y++) { |
||
124 |
bytestream2_get_buffer(&gb, out + linesize * y, c->avctx->width * 3); |
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125 |
} |
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126 |
} |
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127 |
|||
128 |
90 |
static void import_format(CDXLVideoContext *c, int linesize, uint8_t *out) |
|
129 |
{ |
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130 |
90 |
memset(out, 0, linesize * c->avctx->height); |
|
131 |
|||
132 |
✓✓✗✗ |
90 |
switch (c->format) { |
133 |
79 |
case BIT_PLANAR: |
|
134 |
79 |
bitplanar2chunky(c, linesize, out); |
|
135 |
79 |
break; |
|
136 |
11 |
case BIT_LINE: |
|
137 |
11 |
bitline2chunky(c, linesize, out); |
|
138 |
11 |
break; |
|
139 |
case CHUNKY: |
||
140 |
chunky2chunky(c, linesize, out); |
||
141 |
break; |
||
142 |
} |
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143 |
90 |
} |
|
144 |
|||
145 |
59 |
static void cdxl_decode_rgb(CDXLVideoContext *c, AVFrame *frame) |
|
146 |
{ |
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147 |
59 |
uint32_t *new_palette = (uint32_t *)frame->data[1]; |
|
148 |
|||
149 |
59 |
memset(frame->data[1], 0, AVPALETTE_SIZE); |
|
150 |
59 |
import_palette(c, new_palette); |
|
151 |
59 |
import_format(c, frame->linesize[0], frame->data[0]); |
|
152 |
59 |
} |
|
153 |
|||
154 |
static void cdxl_decode_raw(CDXLVideoContext *c, AVFrame *frame) |
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155 |
{ |
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156 |
import_format(c, frame->linesize[0], frame->data[0]); |
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157 |
} |
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158 |
|||
159 |
28 |
static void cdxl_decode_ham6(CDXLVideoContext *c, AVFrame *frame) |
|
160 |
{ |
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161 |
28 |
AVCodecContext *avctx = c->avctx; |
|
162 |
uint32_t new_palette[16], r, g, b; |
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163 |
uint8_t *ptr, *out, index, op; |
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164 |
int x, y; |
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165 |
|||
166 |
28 |
ptr = c->new_video; |
|
167 |
28 |
out = frame->data[0]; |
|
168 |
|||
169 |
28 |
import_palette(c, new_palette); |
|
170 |
28 |
import_format(c, avctx->width, c->new_video); |
|
171 |
|||
172 |
✓✓ | 3498 |
for (y = 0; y < avctx->height; y++) { |
173 |
3470 |
r = new_palette[0] & 0xFF0000; |
|
174 |
3470 |
g = new_palette[0] & 0xFF00; |
|
175 |
3470 |
b = new_palette[0] & 0xFF; |
|
176 |
✓✓ | 561530 |
for (x = 0; x < avctx->width; x++) { |
177 |
558060 |
index = *ptr++; |
|
178 |
558060 |
op = index >> 4; |
|
179 |
558060 |
index &= 15; |
|
180 |
✓✓✓✓ ✗ |
558060 |
switch (op) { |
181 |
131279 |
case 0: |
|
182 |
131279 |
r = new_palette[index] & 0xFF0000; |
|
183 |
131279 |
g = new_palette[index] & 0xFF00; |
|
184 |
131279 |
b = new_palette[index] & 0xFF; |
|
185 |
131279 |
break; |
|
186 |
108493 |
case 1: |
|
187 |
108493 |
b = index * 0x11; |
|
188 |
108493 |
break; |
|
189 |
212370 |
case 2: |
|
190 |
212370 |
r = index * 0x11 << 16; |
|
191 |
212370 |
break; |
|
192 |
105918 |
case 3: |
|
193 |
105918 |
g = index * 0x11 << 8; |
|
194 |
105918 |
break; |
|
195 |
} |
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196 |
558060 |
AV_WL24(out + x * 3, r | g | b); |
|
197 |
} |
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198 |
3470 |
out += frame->linesize[0]; |
|
199 |
} |
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200 |
28 |
} |
|
201 |
|||
202 |
3 |
static void cdxl_decode_ham8(CDXLVideoContext *c, AVFrame *frame) |
|
203 |
{ |
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204 |
3 |
AVCodecContext *avctx = c->avctx; |
|
205 |
uint32_t new_palette[64], r, g, b; |
||
206 |
uint8_t *ptr, *out, index, op; |
||
207 |
int x, y; |
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208 |
|||
209 |
3 |
ptr = c->new_video; |
|
210 |
3 |
out = frame->data[0]; |
|
211 |
|||
212 |
3 |
import_palette(c, new_palette); |
|
213 |
3 |
import_format(c, avctx->width, c->new_video); |
|
214 |
|||
215 |
✓✓ | 387 |
for (y = 0; y < avctx->height; y++) { |
216 |
384 |
r = new_palette[0] & 0xFF0000; |
|
217 |
384 |
g = new_palette[0] & 0xFF00; |
|
218 |
384 |
b = new_palette[0] & 0xFF; |
|
219 |
✓✓ | 67968 |
for (x = 0; x < avctx->width; x++) { |
220 |
67584 |
index = *ptr++; |
|
221 |
67584 |
op = index >> 6; |
|
222 |
67584 |
index &= 63; |
|
223 |
✓✓✓✓ ✗ |
67584 |
switch (op) { |
224 |
3417 |
case 0: |
|
225 |
3417 |
r = new_palette[index] & 0xFF0000; |
|
226 |
3417 |
g = new_palette[index] & 0xFF00; |
|
227 |
3417 |
b = new_palette[index] & 0xFF; |
|
228 |
3417 |
break; |
|
229 |
627 |
case 1: |
|
230 |
627 |
b = (index << 2) | (b & 3); |
|
231 |
627 |
break; |
|
232 |
1122 |
case 2: |
|
233 |
1122 |
r = (index << 18) | (r & (3 << 16)); |
|
234 |
1122 |
break; |
|
235 |
62418 |
case 3: |
|
236 |
62418 |
g = (index << 10) | (g & (3 << 8)); |
|
237 |
62418 |
break; |
|
238 |
} |
||
239 |
67584 |
AV_WL24(out + x * 3, r | g | b); |
|
240 |
} |
||
241 |
384 |
out += frame->linesize[0]; |
|
242 |
} |
||
243 |
3 |
} |
|
244 |
|||
245 |
90 |
static int cdxl_decode_frame(AVCodecContext *avctx, void *data, |
|
246 |
int *got_frame, AVPacket *pkt) |
||
247 |
{ |
||
248 |
90 |
CDXLVideoContext *c = avctx->priv_data; |
|
249 |
90 |
AVFrame * const p = data; |
|
250 |
90 |
int ret, w, h, encoding, aligned_width, buf_size = pkt->size; |
|
251 |
90 |
const uint8_t *buf = pkt->data; |
|
252 |
|||
253 |
✗✓ | 90 |
if (buf_size < 32) |
254 |
return AVERROR_INVALIDDATA; |
||
255 |
90 |
c->type = buf[0]; |
|
256 |
90 |
encoding = buf[1] & 7; |
|
257 |
90 |
c->format = buf[1] & 0xE0; |
|
258 |
90 |
w = AV_RB16(&buf[14]); |
|
259 |
90 |
h = AV_RB16(&buf[16]); |
|
260 |
90 |
c->bpp = buf[19]; |
|
261 |
90 |
c->palette_size = AV_RB16(&buf[20]); |
|
262 |
90 |
c->palette = buf + 32; |
|
263 |
90 |
c->video = c->palette + c->palette_size; |
|
264 |
90 |
c->video_size = buf_size - c->palette_size - 32; |
|
265 |
|||
266 |
✗✓ | 90 |
if (c->type > 1) |
267 |
return AVERROR_INVALIDDATA; |
||
268 |
✓✗✗✓ |
90 |
if (c->type == 1 && c->palette_size > 512) |
269 |
return AVERROR_INVALIDDATA; |
||
270 |
✗✓✗✗ |
90 |
if (c->type == 0 && c->palette_size > 768) |
271 |
return AVERROR_INVALIDDATA; |
||
272 |
✗✓ | 90 |
if (buf_size < c->palette_size + 32) |
273 |
return AVERROR_INVALIDDATA; |
||
274 |
✗✓ | 90 |
if (c->bpp < 1) |
275 |
return AVERROR_INVALIDDATA; |
||
276 |
✓✓✗✓ ✗✗ |
90 |
if (c->format != BIT_PLANAR && c->format != BIT_LINE && c->format != CHUNKY) { |
277 |
avpriv_request_sample(avctx, "Pixel format 0x%0x", c->format); |
||
278 |
return AVERROR_PATCHWELCOME; |
||
279 |
} |
||
280 |
|||
281 |
✗✓ | 90 |
if ((ret = ff_set_dimensions(avctx, w, h)) < 0) |
282 |
return ret; |
||
283 |
|||
284 |
✗✓ | 90 |
if (c->format == CHUNKY) |
285 |
aligned_width = avctx->width; |
||
286 |
else |
||
287 |
90 |
aligned_width = FFALIGN(c->avctx->width, 16); |
|
288 |
90 |
c->padded_bits = aligned_width - c->avctx->width; |
|
289 |
✗✓ | 90 |
if (c->video_size < aligned_width * avctx->height * (int64_t)c->bpp / 8) |
290 |
return AVERROR_INVALIDDATA; |
||
291 |
✓✓✓✗ ✓✗✓✗ |
90 |
if (!encoding && c->palette_size && c->bpp <= 8 && c->format != CHUNKY) { |
292 |
59 |
avctx->pix_fmt = AV_PIX_FMT_PAL8; |
|
293 |
✓✗✓✓ ✓✗✓✗ |
31 |
} else if (encoding == 1 && (c->bpp == 6 || c->bpp == 8) && c->format != CHUNKY) { |
294 |
✗✓ | 31 |
if (c->palette_size != (1 << (c->bpp - 1))) |
295 |
return AVERROR_INVALIDDATA; |
||
296 |
31 |
avctx->pix_fmt = AV_PIX_FMT_BGR24; |
|
297 |
} else if (!encoding && c->bpp == 24 && c->format == CHUNKY && |
||
298 |
!c->palette_size) { |
||
299 |
avctx->pix_fmt = AV_PIX_FMT_RGB24; |
||
300 |
} else { |
||
301 |
avpriv_request_sample(avctx, "Encoding %d, bpp %d and format 0x%x", |
||
302 |
encoding, c->bpp, c->format); |
||
303 |
return AVERROR_PATCHWELCOME; |
||
304 |
} |
||
305 |
|||
306 |
✗✓ | 90 |
if ((ret = ff_get_buffer(avctx, p, 0)) < 0) |
307 |
return ret; |
||
308 |
90 |
p->pict_type = AV_PICTURE_TYPE_I; |
|
309 |
90 |
p->key_frame = 1; |
|
310 |
|||
311 |
✓✓ | 90 |
if (encoding) { |
312 |
31 |
av_fast_padded_malloc(&c->new_video, &c->new_video_size, |
|
313 |
31 |
h * w + AV_INPUT_BUFFER_PADDING_SIZE); |
|
314 |
✗✓ | 31 |
if (!c->new_video) |
315 |
return AVERROR(ENOMEM); |
||
316 |
✓✓ | 31 |
if (c->bpp == 8) |
317 |
3 |
cdxl_decode_ham8(c, p); |
|
318 |
else |
||
319 |
28 |
cdxl_decode_ham6(c, p); |
|
320 |
✓✗ | 59 |
} else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
321 |
59 |
cdxl_decode_rgb(c, p); |
|
322 |
} else { |
||
323 |
cdxl_decode_raw(c, p); |
||
324 |
} |
||
325 |
90 |
*got_frame = 1; |
|
326 |
|||
327 |
90 |
return buf_size; |
|
328 |
} |
||
329 |
|||
330 |
11 |
static av_cold int cdxl_decode_end(AVCodecContext *avctx) |
|
331 |
{ |
||
332 |
11 |
CDXLVideoContext *c = avctx->priv_data; |
|
333 |
|||
334 |
11 |
av_freep(&c->new_video); |
|
335 |
|||
336 |
11 |
return 0; |
|
337 |
} |
||
338 |
|||
339 |
AVCodec ff_cdxl_decoder = { |
||
340 |
.name = "cdxl", |
||
341 |
.long_name = NULL_IF_CONFIG_SMALL("Commodore CDXL video"), |
||
342 |
.type = AVMEDIA_TYPE_VIDEO, |
||
343 |
.id = AV_CODEC_ID_CDXL, |
||
344 |
.priv_data_size = sizeof(CDXLVideoContext), |
||
345 |
.init = cdxl_decode_init, |
||
346 |
.close = cdxl_decode_end, |
||
347 |
.decode = cdxl_decode_frame, |
||
348 |
.capabilities = AV_CODEC_CAP_DR1, |
||
349 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
||
350 |
}; |
Generated by: GCOVR (Version 4.2) |