FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/asvenc.c
Date: 2025-04-25 22:50:00
Exec Total Coverage
Lines: 189 201 94.0%
Functions: 8 8 100.0%
Branches: 106 118 89.8%
Line Branch Exec Source
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 encoder.
24 */
25
26 #include "config_components.h"
27
28 #include "libavutil/attributes.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/mem_internal.h"
31
32 #include "aandcttab.h"
33 #include "asv.h"
34 #include "avcodec.h"
35 #include "codec_internal.h"
36 #include "encode.h"
37 #include "fdctdsp.h"
38 #include "mpeg12data.h"
39 #include "pixblockdsp.h"
40 #include "put_bits.h"
41
42 typedef struct ASVEncContext {
43 ASVCommonContext c;
44
45 PutBitContext pb;
46
47 PixblockDSPContext pdsp;
48 FDCTDSPContext fdsp;
49 DECLARE_ALIGNED(32, int16_t, block)[6][64];
50 int q_intra_matrix[64];
51 } ASVEncContext;
52
53 enum {
54 ASV1_MAX_BLOCK_SIZE = 8 + 10 * FFMAX(2 /* skip */, 5 /* ccp */ + 4 * 11 /* level */) + 5,
55 ASV1_MAX_MB_SIZE = 6 * ASV1_MAX_BLOCK_SIZE,
56 ASV2_MAX_BLOCK_SIZE = 4 + 8 + 16 * (6 /* ccp */ + 4 * 13 /* level */),
57 ASV2_MAX_MB_SIZE = 6 * ASV2_MAX_BLOCK_SIZE,
58 MAX_MB_SIZE = (FFMAX(ASV1_MAX_MB_SIZE, ASV2_MAX_MB_SIZE) + 7) / 8
59 };
60
61 2972884 static inline void asv1_put_level(PutBitContext *pb, int level)
62 {
63 2972884 unsigned int index = level + 3;
64
65
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 2972884 if (index <= 6) {
66 2543172 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
67 } else {
68 429712 put_bits(pb, 3, 0); /* Escape code */
69 429712 put_sbits(pb, 8, level);
70 }
71 2972884 }
72
73 3660409 static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level)
74 {
75 3660409 unsigned int index = level + 31;
76
77
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 3660409 if (index <= 62) {
78 3659796 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
79 } else {
80 613 put_bits_le(pb, 5, 0); /* Escape code */
81
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 613 if (level < -128 || level > 127) {
82 ✗ av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
83 ✗ level = av_clip_int8(level);
84 }
85 613 put_bits_le(pb, 8, level & 0xFF);
86 }
87 3660409 }
88
89 359100 static inline void asv1_encode_block(ASVEncContext *a, int16_t block[64])
90 {
91 int i;
92 359100 int nc_count = 0;
93
94 359100 put_bits(&a->pb, 8, (block[0] + 32) >> 6);
95 359100 block[0] = 0;
96
97
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 3950100 for (i = 0; i < 10; i++) {
98 3591000 const int index = ff_asv_scantab[4 * i];
99 3591000 int ccp = 0;
100
101 3591000 if ((block[index + 0] = (block[index + 0] *
102
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 3591000 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
103 759471 ccp |= 8;
104 3591000 if ((block[index + 8] = (block[index + 8] *
105
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 3591000 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
106 828513 ccp |= 4;
107 3591000 if ((block[index + 1] = (block[index + 1] *
108
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 3591000 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
109 781213 ccp |= 2;
110 3591000 if ((block[index + 9] = (block[index + 9] *
111
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 3591000 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
112 603687 ccp |= 1;
113
114
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 3591000 if (ccp) {
115
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 1769652 for (; nc_count; nc_count--)
116 405258 put_bits(&a->pb, 2, 2); /* Skip */
117
118 1364394 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
119
120
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 1364394 if (ccp & 8)
121 759471 asv1_put_level(&a->pb, block[index + 0]);
122
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 1364394 if (ccp & 4)
123 828513 asv1_put_level(&a->pb, block[index + 8]);
124
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 1364394 if (ccp & 2)
125 781213 asv1_put_level(&a->pb, block[index + 1]);
126
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 1364394 if (ccp & 1)
127 603687 asv1_put_level(&a->pb, block[index + 9]);
128 } else {
129 2226606 nc_count++;
130 }
131 }
132 359100 put_bits(&a->pb, 5, 0xF); /* End of block */
133 359100 }
134
135 359100 static inline void asv2_encode_block(ASVEncContext *a, int16_t block[64])
136 {
137 int i;
138 359100 int count = 0;
139
140
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 14496453 for (count = 63; count > 3; count--) {
141 14433466 const int index = ff_asv_scantab[count];
142
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 14433466 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
143 296113 break;
144 }
145
146 359100 count >>= 2;
147
148 359100 put_bits_le(&a->pb, 4, count);
149 359100 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
150 359100 block[0] = 0;
151
152
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 2709128 for (i = 0; i <= count; i++) {
153 2350028 const int index = ff_asv_scantab[4 * i];
154 2350028 int ccp = 0;
155
156 2350028 if ((block[index + 0] = (block[index + 0] *
157
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 2350028 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
158 968959 ccp |= 8;
159 2350028 if ((block[index + 8] = (block[index + 8] *
160
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 2350028 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
161 1014552 ccp |= 4;
162 2350028 if ((block[index + 1] = (block[index + 1] *
163
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 2350028 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
164 951514 ccp |= 2;
165 2350028 if ((block[index + 9] = (block[index + 9] *
166
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 2350028 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
167 725384 ccp |= 1;
168
169 av_assert2(i || ccp < 8);
170
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 2350028 if (i)
171 1990928 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
172 else
173 359100 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
174
175
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 2350028 if (ccp) {
176
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 1697818 if (ccp & 8)
177 968959 asv2_put_level(a, &a->pb, block[index + 0]);
178
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 1697818 if (ccp & 4)
179 1014552 asv2_put_level(a, &a->pb, block[index + 8]);
180
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 1697818 if (ccp & 2)
181 951514 asv2_put_level(a, &a->pb, block[index + 1]);
182
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 1697818 if (ccp & 1)
183 725384 asv2_put_level(a, &a->pb, block[index + 9]);
184 }
185 }
186 359100 }
187
188 119700 static inline int encode_mb(ASVEncContext *a, int16_t block[6][64])
189 {
190 int i;
191
192
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 119700 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
193
194
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 119700 if (a->c.avctx->codec_id == AV_CODEC_ID_ASV1) {
195
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 418950 for (i = 0; i < 6; i++)
196 359100 asv1_encode_block(a, block[i]);
197 } else {
198
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 418950 for (i = 0; i < 6; i++) {
199 359100 asv2_encode_block(a, block[i]);
200 }
201 }
202 119700 return 0;
203 }
204
205 119700 static inline void dct_get(ASVEncContext *a, const AVFrame *frame,
206 int mb_x, int mb_y)
207 {
208 119700 int16_t (*block)[64] = a->block;
209 119700 int linesize = frame->linesize[0];
210 int i;
211
212 119700 const uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
213 119700 const uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
214 119700 const uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
215
216 119700 a->pdsp.get_pixels(block[0], ptr_y, linesize);
217 119700 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
218 119700 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
219 119700 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
220
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 598500 for (i = 0; i < 4; i++)
221 478800 a->fdsp.fdct(block[i]);
222
223
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 119700 if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) {
224 119700 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
225 119700 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
226
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 359100 for (i = 4; i < 6; i++)
227 239400 a->fdsp.fdct(block[i]);
228 }
229 119700 }
230
231 500 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
232 const AVFrame *pict, int *got_packet)
233 {
234 500 ASVEncContext *const a = avctx->priv_data;
235 500 const ASVCommonContext *const c = &a->c;
236 int size, ret;
237
238
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 500 if (pict->width % 16 || pict->height % 16) {
239 100 AVFrame *clone = av_frame_alloc();
240 int i;
241
242
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 100 if (!clone)
243 ✗ return AVERROR(ENOMEM);
244 100 clone->format = pict->format;
245 100 clone->width = FFALIGN(pict->width, 16);
246 100 clone->height = FFALIGN(pict->height, 16);
247 100 ret = av_frame_get_buffer(clone, 0);
248
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 100 if (ret < 0) {
249 ✗ av_frame_free(&clone);
250 ✗ return ret;
251 }
252
253 100 ret = av_frame_copy(clone, pict);
254
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 100 if (ret < 0) {
255 ✗ av_frame_free(&clone);
256 ✗ return ret;
257 }
258
259
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 400 for (i = 0; i<3; i++) {
260 int x, y;
261 300 int w = AV_CEIL_RSHIFT(pict->width, !!i);
262 300 int h = AV_CEIL_RSHIFT(pict->height, !!i);
263 300 int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
264 300 int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
265
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 7100 for (y=0; y<h; y++)
266
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 78200 for (x=w; x<w2; x++)
267 71400 clone->data[i][x + y*clone->linesize[i]] =
268 71400 clone->data[i][w - 1 + y*clone->linesize[i]];
269
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 3100 for (y=h; y<h2; y++)
270
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271 100800 clone->data[i][x + y*clone->linesize[i]] =
272 100800 clone->data[i][x + (h-1)*clone->linesize[i]];
273 }
274 100 ret = encode_frame(avctx, pkt, clone, got_packet);
275
276 100 av_frame_free(&clone);
277 100 return ret;
278 }
279
280 400 ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE + 3);
281
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 400 if (ret < 0)
282 ✗ return ret;
283
284 400 init_put_bits(&a->pb, pkt->data, pkt->size);
285
286
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 6000 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
287
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 124800 for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) {
288 119200 dct_get(a, pict, mb_x, mb_y);
289 119200 encode_mb(a, a->block);
290 }
291 }
292
293
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 400 if (c->mb_width2 != c->mb_width) {
294 100 int mb_x = c->mb_width2;
295
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 300 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
296 200 dct_get(a, pict, mb_x, mb_y);
297 200 encode_mb(a, a->block);
298 }
299 }
300
301
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 400 if (c->mb_height2 != c->mb_height) {
302 100 int mb_y = c->mb_height2;
303
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 400 for (int mb_x = 0; mb_x < c->mb_width; mb_x++) {
304 300 dct_get(a, pict, mb_x, mb_y);
305 300 encode_mb(a, a->block);
306 }
307 }
308
309
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1)
310 200 flush_put_bits(&a->pb);
311 else
312 200 flush_put_bits_le(&a->pb);
313 400 AV_WN32(put_bits_ptr(&a->pb), 0);
314 400 size = (put_bytes_output(&a->pb) + 3) / 4;
315
316
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1) {
317 200 c->bbdsp.bswap_buf((uint32_t *) pkt->data,
318 200 (uint32_t *) pkt->data, size);
319 }
320
321 400 pkt->size = size * 4;
322 400 *got_packet = 1;
323
324 400 return 0;
325 }
326
327 8 static av_cold int encode_init(AVCodecContext *avctx)
328 {
329 8 ASVEncContext *const a = avctx->priv_data;
330 int i;
331
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 8 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
332 int inv_qscale;
333
334 8 ff_asv_common_init(avctx);
335 8 ff_fdctdsp_init(&a->fdsp, avctx);
336 8 ff_pixblockdsp_init(&a->pdsp, avctx);
337
338
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 8 if (avctx->global_quality <= 0)
339 ✗ avctx->global_quality = 4 * FF_QUALITY_SCALE;
340
341 8 inv_qscale = (32 * scale * FF_QUALITY_SCALE +
342 8 avctx->global_quality / 2) / avctx->global_quality;
343
344 8 avctx->extradata = av_mallocz(8);
345
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 8 if (!avctx->extradata)
346 ✗ return AVERROR(ENOMEM);
347 8 avctx->extradata_size = 8;
348 8 AV_WLA(32, avctx->extradata, inv_qscale);
349 8 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
350
351
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 520 for (i = 0; i < 64; i++) {
352
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 512 if (a->fdsp.fdct == ff_fdct_ifast) {
353 512 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
354 512 a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q;
355 } else {
356 ✗ int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
357 ✗ a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q;
358 }
359 }
360
361 8 return 0;
362 }
363
364 #if CONFIG_ASV1_ENCODER
365 const FFCodec ff_asv1_encoder = {
366 .p.name = "asv1",
367 CODEC_LONG_NAME("ASUS V1"),
368 .p.type = AVMEDIA_TYPE_VIDEO,
369 .p.id = AV_CODEC_ID_ASV1,
370 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
371 .priv_data_size = sizeof(ASVEncContext),
372 .init = encode_init,
373 FF_CODEC_ENCODE_CB(encode_frame),
374 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
375 .color_ranges = AVCOL_RANGE_MPEG,
376 };
377 #endif
378
379 #if CONFIG_ASV2_ENCODER
380 const FFCodec ff_asv2_encoder = {
381 .p.name = "asv2",
382 CODEC_LONG_NAME("ASUS V2"),
383 .p.type = AVMEDIA_TYPE_VIDEO,
384 .p.id = AV_CODEC_ID_ASV2,
385 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
386 .priv_data_size = sizeof(ASVEncContext),
387 .init = encode_init,
388 FF_CODEC_ENCODE_CB(encode_frame),
389 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
390 .color_ranges = AVCOL_RANGE_MPEG,
391 };
392 #endif
393