1 |
|
|
/* |
2 |
|
|
* Copyright (c) 2003 Michael Niedermayer |
3 |
|
|
* |
4 |
|
|
* This file is part of FFmpeg. |
5 |
|
|
* |
6 |
|
|
* FFmpeg is free software; you can redistribute it and/or |
7 |
|
|
* modify it under the terms of the GNU Lesser General Public |
8 |
|
|
* License as published by the Free Software Foundation; either |
9 |
|
|
* version 2.1 of the License, or (at your option) any later version. |
10 |
|
|
* |
11 |
|
|
* FFmpeg is distributed in the hope that it will be useful, |
12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 |
|
|
* Lesser General Public License for more details. |
15 |
|
|
* |
16 |
|
|
* You should have received a copy of the GNU Lesser General Public |
17 |
|
|
* License along with FFmpeg; if not, write to the Free Software |
18 |
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 |
|
|
*/ |
20 |
|
|
|
21 |
|
|
/** |
22 |
|
|
* @file |
23 |
|
|
* ASUS V1/V2 decoder. |
24 |
|
|
*/ |
25 |
|
|
|
26 |
|
|
#include "libavutil/attributes.h" |
27 |
|
|
#include "libavutil/mem.h" |
28 |
|
|
#include "libavutil/thread.h" |
29 |
|
|
|
30 |
|
|
#include "asv.h" |
31 |
|
|
#include "avcodec.h" |
32 |
|
|
#include "blockdsp.h" |
33 |
|
|
#include "idctdsp.h" |
34 |
|
|
#include "internal.h" |
35 |
|
|
#include "mpeg12data.h" |
36 |
|
|
|
37 |
|
|
#define CCP_VLC_BITS 5 |
38 |
|
|
#define DC_CCP_VLC_BITS 4 |
39 |
|
|
#define AC_CCP_VLC_BITS 6 |
40 |
|
|
#define ASV1_LEVEL_VLC_BITS 4 |
41 |
|
|
#define ASV2_LEVEL_VLC_BITS 10 |
42 |
|
|
|
43 |
|
|
static VLC ccp_vlc; |
44 |
|
|
static VLC level_vlc; |
45 |
|
|
static VLC dc_ccp_vlc; |
46 |
|
|
static VLC ac_ccp_vlc; |
47 |
|
|
static VLC asv2_level_vlc; |
48 |
|
|
|
49 |
|
10 |
static av_cold void init_vlcs(void) |
50 |
|
|
{ |
51 |
|
10 |
INIT_VLC_STATIC(&ccp_vlc, CCP_VLC_BITS, 17, |
52 |
|
|
&ff_asv_ccp_tab[0][1], 2, 1, |
53 |
|
|
&ff_asv_ccp_tab[0][0], 2, 1, 32); |
54 |
|
10 |
INIT_LE_VLC_STATIC(&dc_ccp_vlc, DC_CCP_VLC_BITS, 8, |
55 |
|
|
&ff_asv_dc_ccp_tab[0][1], 2, 1, |
56 |
|
|
&ff_asv_dc_ccp_tab[0][0], 2, 1, 16); |
57 |
|
10 |
INIT_LE_VLC_STATIC(&ac_ccp_vlc, AC_CCP_VLC_BITS, 16, |
58 |
|
|
&ff_asv_ac_ccp_tab[0][1], 2, 1, |
59 |
|
|
&ff_asv_ac_ccp_tab[0][0], 2, 1, 64); |
60 |
|
10 |
INIT_VLC_STATIC(&level_vlc, ASV1_LEVEL_VLC_BITS, 7, |
61 |
|
|
&ff_asv_level_tab[0][1], 2, 1, |
62 |
|
|
&ff_asv_level_tab[0][0], 2, 1, 16); |
63 |
|
10 |
INIT_LE_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63, |
64 |
|
|
&ff_asv2_level_tab[0][1], 4, 2, |
65 |
|
|
&ff_asv2_level_tab[0][0], 4, 2, 1024); |
66 |
|
10 |
} |
67 |
|
|
|
68 |
|
2972884 |
static inline int asv1_get_level(GetBitContext *gb) |
69 |
|
|
{ |
70 |
|
2972884 |
int code = get_vlc2(gb, level_vlc.table, ASV1_LEVEL_VLC_BITS, 1); |
71 |
|
|
|
72 |
✓✓ |
2972884 |
if (code == 3) |
73 |
|
429712 |
return get_sbits(gb, 8); |
74 |
|
|
else |
75 |
|
2543172 |
return code - 3; |
76 |
|
|
} |
77 |
|
|
|
78 |
|
|
// get_vlc2() is big-endian in this file |
79 |
|
6010437 |
static inline int asv2_get_vlc2(GetBitContext *gb, VLC_TYPE (*table)[2], int bits) |
80 |
|
|
{ |
81 |
|
|
unsigned int index; |
82 |
|
|
int code, n; |
83 |
|
|
|
84 |
|
6010437 |
OPEN_READER(re, gb); |
85 |
|
6010437 |
UPDATE_CACHE_LE(re, gb); |
86 |
|
|
|
87 |
|
6010437 |
index = SHOW_UBITS_LE(re, gb, bits); |
88 |
|
6010437 |
code = table[index][0]; |
89 |
|
6010437 |
n = table[index][1]; |
90 |
|
6010437 |
LAST_SKIP_BITS(re, gb, n); |
91 |
|
|
|
92 |
|
6010437 |
CLOSE_READER(re, gb); |
93 |
|
|
|
94 |
|
6010437 |
return code; |
95 |
|
|
} |
96 |
|
|
|
97 |
|
3660409 |
static inline int asv2_get_level(GetBitContext *gb) |
98 |
|
|
{ |
99 |
|
3660409 |
int code = asv2_get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS); |
100 |
|
|
|
101 |
✓✓ |
3660409 |
if (code == 31) |
102 |
|
613 |
return (int8_t) get_bits_le(gb, 8); |
103 |
|
|
else |
104 |
|
3659796 |
return code - 31; |
105 |
|
|
} |
106 |
|
|
|
107 |
|
359100 |
static inline int asv1_decode_block(ASV1Context *a, int16_t block[64]) |
108 |
|
|
{ |
109 |
|
|
int i; |
110 |
|
|
|
111 |
|
359100 |
block[0] = 8 * get_bits(&a->gb, 8); |
112 |
|
|
|
113 |
✓✗ |
2128752 |
for (i = 0; i < 11; i++) { |
114 |
|
2128752 |
const int ccp = get_vlc2(&a->gb, ccp_vlc.table, CCP_VLC_BITS, 1); |
115 |
|
|
|
116 |
✓✓ |
2128752 |
if (ccp) { |
117 |
✓✓ |
1723494 |
if (ccp == 16) |
118 |
|
359100 |
break; |
119 |
✓✗✗✓
|
1364394 |
if (ccp < 0 || i >= 10) { |
120 |
|
|
av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n"); |
121 |
|
|
return AVERROR_INVALIDDATA; |
122 |
|
|
} |
123 |
|
|
|
124 |
✓✓ |
1364394 |
if (ccp & 8) |
125 |
|
759471 |
block[a->scantable.permutated[4 * i + 0]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 0]) >> 4; |
126 |
✓✓ |
1364394 |
if (ccp & 4) |
127 |
|
828513 |
block[a->scantable.permutated[4 * i + 1]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 1]) >> 4; |
128 |
✓✓ |
1364394 |
if (ccp & 2) |
129 |
|
781213 |
block[a->scantable.permutated[4 * i + 2]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 2]) >> 4; |
130 |
✓✓ |
1364394 |
if (ccp & 1) |
131 |
|
603687 |
block[a->scantable.permutated[4 * i + 3]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 3]) >> 4; |
132 |
|
|
} |
133 |
|
|
} |
134 |
|
|
|
135 |
|
359100 |
return 0; |
136 |
|
|
} |
137 |
|
|
|
138 |
|
359100 |
static inline int asv2_decode_block(ASV1Context *a, int16_t block[64]) |
139 |
|
|
{ |
140 |
|
|
int i, count, ccp; |
141 |
|
|
|
142 |
|
359100 |
count = get_bits_le(&a->gb, 4); |
143 |
|
|
|
144 |
|
359100 |
block[0] = 8 * get_bits_le(&a->gb, 8); |
145 |
|
|
|
146 |
|
359100 |
ccp = asv2_get_vlc2(&a->gb, dc_ccp_vlc.table, DC_CCP_VLC_BITS); |
147 |
✓✓ |
359100 |
if (ccp) { |
148 |
✓✓ |
329075 |
if (ccp & 4) |
149 |
|
281504 |
block[a->scantable.permutated[1]] = (asv2_get_level(&a->gb) * a->intra_matrix[1]) >> 4; |
150 |
✓✓ |
329075 |
if (ccp & 2) |
151 |
|
284503 |
block[a->scantable.permutated[2]] = (asv2_get_level(&a->gb) * a->intra_matrix[2]) >> 4; |
152 |
✓✓ |
329075 |
if (ccp & 1) |
153 |
|
226812 |
block[a->scantable.permutated[3]] = (asv2_get_level(&a->gb) * a->intra_matrix[3]) >> 4; |
154 |
|
|
} |
155 |
|
|
|
156 |
✓✓ |
2350028 |
for (i = 1; i < count + 1; i++) { |
157 |
|
1990928 |
const int ccp = asv2_get_vlc2(&a->gb, ac_ccp_vlc.table, AC_CCP_VLC_BITS); |
158 |
|
|
|
159 |
✓✓ |
1990928 |
if (ccp) { |
160 |
✓✓ |
1368743 |
if (ccp & 8) |
161 |
|
968959 |
block[a->scantable.permutated[4 * i + 0]] = (asv2_get_level(&a->gb) * a->intra_matrix[4 * i + 0]) >> 4; |
162 |
✓✓ |
1368743 |
if (ccp & 4) |
163 |
|
733048 |
block[a->scantable.permutated[4 * i + 1]] = (asv2_get_level(&a->gb) * a->intra_matrix[4 * i + 1]) >> 4; |
164 |
✓✓ |
1368743 |
if (ccp & 2) |
165 |
|
667011 |
block[a->scantable.permutated[4 * i + 2]] = (asv2_get_level(&a->gb) * a->intra_matrix[4 * i + 2]) >> 4; |
166 |
✓✓ |
1368743 |
if (ccp & 1) |
167 |
|
498572 |
block[a->scantable.permutated[4 * i + 3]] = (asv2_get_level(&a->gb) * a->intra_matrix[4 * i + 3]) >> 4; |
168 |
|
|
} |
169 |
|
|
} |
170 |
|
|
|
171 |
|
359100 |
return 0; |
172 |
|
|
} |
173 |
|
|
|
174 |
|
119700 |
static inline int decode_mb(ASV1Context *a, int16_t block[6][64]) |
175 |
|
|
{ |
176 |
|
|
int i, ret; |
177 |
|
|
|
178 |
|
119700 |
a->bdsp.clear_blocks(block[0]); |
179 |
|
|
|
180 |
✓✓ |
119700 |
if (a->avctx->codec_id == AV_CODEC_ID_ASV1) { |
181 |
✓✓ |
418950 |
for (i = 0; i < 6; i++) { |
182 |
✗✓ |
359100 |
if ((ret = asv1_decode_block(a, block[i])) < 0) |
183 |
|
|
return ret; |
184 |
|
|
} |
185 |
|
|
} else { |
186 |
✓✓ |
418950 |
for (i = 0; i < 6; i++) { |
187 |
✗✓ |
359100 |
if ((ret = asv2_decode_block(a, block[i])) < 0) |
188 |
|
|
return ret; |
189 |
|
|
} |
190 |
|
|
} |
191 |
|
119700 |
return 0; |
192 |
|
|
} |
193 |
|
|
|
194 |
|
119700 |
static inline void idct_put(ASV1Context *a, AVFrame *frame, int mb_x, int mb_y) |
195 |
|
|
{ |
196 |
|
119700 |
int16_t(*block)[64] = a->block; |
197 |
|
119700 |
int linesize = frame->linesize[0]; |
198 |
|
|
|
199 |
|
119700 |
uint8_t *dest_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16; |
200 |
|
119700 |
uint8_t *dest_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8; |
201 |
|
119700 |
uint8_t *dest_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8; |
202 |
|
|
|
203 |
|
119700 |
a->idsp.idct_put(dest_y, linesize, block[0]); |
204 |
|
119700 |
a->idsp.idct_put(dest_y + 8, linesize, block[1]); |
205 |
|
119700 |
a->idsp.idct_put(dest_y + 8 * linesize, linesize, block[2]); |
206 |
|
119700 |
a->idsp.idct_put(dest_y + 8 * linesize + 8, linesize, block[3]); |
207 |
|
|
|
208 |
✓✗ |
119700 |
if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) { |
209 |
|
119700 |
a->idsp.idct_put(dest_cb, frame->linesize[1], block[4]); |
210 |
|
119700 |
a->idsp.idct_put(dest_cr, frame->linesize[2], block[5]); |
211 |
|
|
} |
212 |
|
119700 |
} |
213 |
|
|
|
214 |
|
400 |
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
215 |
|
|
AVPacket *avpkt) |
216 |
|
|
{ |
217 |
|
400 |
ASV1Context *const a = avctx->priv_data; |
218 |
|
400 |
const uint8_t *buf = avpkt->data; |
219 |
|
400 |
int buf_size = avpkt->size; |
220 |
|
400 |
AVFrame *const p = data; |
221 |
|
|
int mb_x, mb_y, ret; |
222 |
|
|
|
223 |
✗✓ |
400 |
if (buf_size * 8LL < a->mb_height * a->mb_width * 13LL) |
224 |
|
|
return AVERROR_INVALIDDATA; |
225 |
|
|
|
226 |
✗✓ |
400 |
if ((ret = ff_get_buffer(avctx, p, 0)) < 0) |
227 |
|
|
return ret; |
228 |
|
400 |
p->pict_type = AV_PICTURE_TYPE_I; |
229 |
|
400 |
p->key_frame = 1; |
230 |
|
|
|
231 |
✓✓ |
400 |
if (avctx->codec_id == AV_CODEC_ID_ASV1) { |
232 |
|
200 |
av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, |
233 |
|
|
buf_size); |
234 |
✗✓ |
200 |
if (!a->bitstream_buffer) |
235 |
|
|
return AVERROR(ENOMEM); |
236 |
|
|
|
237 |
|
200 |
a->bbdsp.bswap_buf((uint32_t *) a->bitstream_buffer, |
238 |
|
|
(const uint32_t *) buf, buf_size / 4); |
239 |
|
200 |
ret = init_get_bits8(&a->gb, a->bitstream_buffer, buf_size); |
240 |
|
|
} else { |
241 |
|
200 |
ret = init_get_bits8_le(&a->gb, buf, buf_size); |
242 |
|
|
} |
243 |
✗✓ |
400 |
if (ret < 0) |
244 |
|
|
return ret; |
245 |
|
|
|
246 |
✓✓ |
6000 |
for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { |
247 |
✓✓ |
124800 |
for (mb_x = 0; mb_x < a->mb_width2; mb_x++) { |
248 |
✗✓ |
119200 |
if ((ret = decode_mb(a, a->block)) < 0) |
249 |
|
|
return ret; |
250 |
|
|
|
251 |
|
119200 |
idct_put(a, p, mb_x, mb_y); |
252 |
|
|
} |
253 |
|
|
} |
254 |
|
|
|
255 |
✓✓ |
400 |
if (a->mb_width2 != a->mb_width) { |
256 |
|
100 |
mb_x = a->mb_width2; |
257 |
✓✓ |
300 |
for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { |
258 |
✗✓ |
200 |
if ((ret = decode_mb(a, a->block)) < 0) |
259 |
|
|
return ret; |
260 |
|
|
|
261 |
|
200 |
idct_put(a, p, mb_x, mb_y); |
262 |
|
|
} |
263 |
|
|
} |
264 |
|
|
|
265 |
✓✓ |
400 |
if (a->mb_height2 != a->mb_height) { |
266 |
|
100 |
mb_y = a->mb_height2; |
267 |
✓✓ |
400 |
for (mb_x = 0; mb_x < a->mb_width; mb_x++) { |
268 |
✗✓ |
300 |
if ((ret = decode_mb(a, a->block)) < 0) |
269 |
|
|
return ret; |
270 |
|
|
|
271 |
|
300 |
idct_put(a, p, mb_x, mb_y); |
272 |
|
|
} |
273 |
|
|
} |
274 |
|
|
|
275 |
|
400 |
*got_frame = 1; |
276 |
|
|
|
277 |
|
400 |
emms_c(); |
278 |
|
|
|
279 |
|
400 |
return (get_bits_count(&a->gb) + 31) / 32 * 4; |
280 |
|
|
} |
281 |
|
|
|
282 |
|
18 |
static av_cold int decode_init(AVCodecContext *avctx) |
283 |
|
|
{ |
284 |
|
|
static AVOnce init_static_once = AV_ONCE_INIT; |
285 |
|
18 |
ASV1Context *const a = avctx->priv_data; |
286 |
✓✓ |
18 |
const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2; |
287 |
|
|
int i; |
288 |
|
|
|
289 |
✗✓ |
18 |
if (avctx->extradata_size < 1) { |
290 |
|
|
av_log(avctx, AV_LOG_WARNING, "No extradata provided\n"); |
291 |
|
|
} |
292 |
|
|
|
293 |
|
18 |
ff_asv_common_init(avctx); |
294 |
|
18 |
ff_blockdsp_init(&a->bdsp, avctx); |
295 |
|
18 |
ff_idctdsp_init(&a->idsp, avctx); |
296 |
|
18 |
ff_init_scantable(a->idsp.idct_permutation, &a->scantable, ff_asv_scantab); |
297 |
|
18 |
avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
298 |
|
|
|
299 |
✓✗✗✓
|
18 |
if (avctx->extradata_size < 1 || (a->inv_qscale = avctx->extradata[0]) == 0) { |
300 |
|
|
av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n"); |
301 |
|
|
if (avctx->codec_id == AV_CODEC_ID_ASV1) |
302 |
|
|
a->inv_qscale = 6; |
303 |
|
|
else |
304 |
|
|
a->inv_qscale = 10; |
305 |
|
|
} |
306 |
|
|
|
307 |
✓✓ |
1170 |
for (i = 0; i < 64; i++) { |
308 |
|
1152 |
int index = ff_asv_scantab[i]; |
309 |
|
|
|
310 |
|
1152 |
a->intra_matrix[i] = 64 * scale * ff_mpeg1_default_intra_matrix[index] / |
311 |
|
1152 |
a->inv_qscale; |
312 |
|
|
} |
313 |
|
|
|
314 |
|
18 |
ff_thread_once(&init_static_once, init_vlcs); |
315 |
|
|
|
316 |
|
18 |
return 0; |
317 |
|
|
} |
318 |
|
|
|
319 |
|
9 |
static av_cold int decode_end(AVCodecContext *avctx) |
320 |
|
|
{ |
321 |
|
9 |
ASV1Context *const a = avctx->priv_data; |
322 |
|
|
|
323 |
|
9 |
av_freep(&a->bitstream_buffer); |
324 |
|
9 |
a->bitstream_buffer_size = 0; |
325 |
|
|
|
326 |
|
9 |
return 0; |
327 |
|
|
} |
328 |
|
|
|
329 |
|
|
#if CONFIG_ASV1_DECODER |
330 |
|
|
AVCodec ff_asv1_decoder = { |
331 |
|
|
.name = "asv1", |
332 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("ASUS V1"), |
333 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
334 |
|
|
.id = AV_CODEC_ID_ASV1, |
335 |
|
|
.priv_data_size = sizeof(ASV1Context), |
336 |
|
|
.init = decode_init, |
337 |
|
|
.close = decode_end, |
338 |
|
|
.decode = decode_frame, |
339 |
|
|
.capabilities = AV_CODEC_CAP_DR1, |
340 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
341 |
|
|
}; |
342 |
|
|
#endif |
343 |
|
|
|
344 |
|
|
#if CONFIG_ASV2_DECODER |
345 |
|
|
AVCodec ff_asv2_decoder = { |
346 |
|
|
.name = "asv2", |
347 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("ASUS V2"), |
348 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
349 |
|
|
.id = AV_CODEC_ID_ASV2, |
350 |
|
|
.priv_data_size = sizeof(ASV1Context), |
351 |
|
|
.init = decode_init, |
352 |
|
|
.decode = decode_frame, |
353 |
|
|
.capabilities = AV_CODEC_CAP_DR1, |
354 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
355 |
|
|
}; |
356 |
|
|
#endif |