FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/asvenc.c
Date: 2023-12-04 05:51:44
Exec Total Coverage
Lines: 188 200 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 2972884 static inline void asv1_put_level(PutBitContext *pb, int level)
54 {
55 2972884 unsigned int index = level + 3;
56
57
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 2972884 if (index <= 6) {
58 2543172 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
59 } else {
60 429712 put_bits(pb, 3, 0); /* Escape code */
61 429712 put_sbits(pb, 8, level);
62 }
63 2972884 }
64
65 3660409 static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level)
66 {
67 3660409 unsigned int index = level + 31;
68
69
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 3660409 if (index <= 62) {
70 3659796 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
71 } else {
72 613 put_bits_le(pb, 5, 0); /* Escape code */
73
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 613 if (level < -128 || level > 127) {
74 ✗ av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
75 ✗ level = av_clip_int8(level);
76 }
77 613 put_bits_le(pb, 8, level & 0xFF);
78 }
79 3660409 }
80
81 359100 static inline void asv1_encode_block(ASVEncContext *a, int16_t block[64])
82 {
83 int i;
84 359100 int nc_count = 0;
85
86 359100 put_bits(&a->pb, 8, (block[0] + 32) >> 6);
87 359100 block[0] = 0;
88
89
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 3950100 for (i = 0; i < 10; i++) {
90 3591000 const int index = ff_asv_scantab[4 * i];
91 3591000 int ccp = 0;
92
93 3591000 if ((block[index + 0] = (block[index + 0] *
94
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 3591000 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
95 759471 ccp |= 8;
96 3591000 if ((block[index + 8] = (block[index + 8] *
97
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 3591000 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
98 828513 ccp |= 4;
99 3591000 if ((block[index + 1] = (block[index + 1] *
100
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 3591000 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
101 781213 ccp |= 2;
102 3591000 if ((block[index + 9] = (block[index + 9] *
103
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 3591000 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
104 603687 ccp |= 1;
105
106
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 3591000 if (ccp) {
107
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 1769652 for (; nc_count; nc_count--)
108 405258 put_bits(&a->pb, 2, 2); /* Skip */
109
110 1364394 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
111
112
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 1364394 if (ccp & 8)
113 759471 asv1_put_level(&a->pb, block[index + 0]);
114
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 1364394 if (ccp & 4)
115 828513 asv1_put_level(&a->pb, block[index + 8]);
116
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 1364394 if (ccp & 2)
117 781213 asv1_put_level(&a->pb, block[index + 1]);
118
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 1364394 if (ccp & 1)
119 603687 asv1_put_level(&a->pb, block[index + 9]);
120 } else {
121 2226606 nc_count++;
122 }
123 }
124 359100 put_bits(&a->pb, 5, 0xF); /* End of block */
125 359100 }
126
127 359100 static inline void asv2_encode_block(ASVEncContext *a, int16_t block[64])
128 {
129 int i;
130 359100 int count = 0;
131
132
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 14496453 for (count = 63; count > 3; count--) {
133 14433466 const int index = ff_asv_scantab[count];
134
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 14433466 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
135 296113 break;
136 }
137
138 359100 count >>= 2;
139
140 359100 put_bits_le(&a->pb, 4, count);
141 359100 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
142 359100 block[0] = 0;
143
144
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 2709128 for (i = 0; i <= count; i++) {
145 2350028 const int index = ff_asv_scantab[4 * i];
146 2350028 int ccp = 0;
147
148 2350028 if ((block[index + 0] = (block[index + 0] *
149
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 2350028 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
150 968959 ccp |= 8;
151 2350028 if ((block[index + 8] = (block[index + 8] *
152
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 2350028 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
153 1014552 ccp |= 4;
154 2350028 if ((block[index + 1] = (block[index + 1] *
155
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 2350028 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
156 951514 ccp |= 2;
157 2350028 if ((block[index + 9] = (block[index + 9] *
158
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 2350028 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
159 725384 ccp |= 1;
160
161 av_assert2(i || ccp < 8);
162
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 2350028 if (i)
163 1990928 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
164 else
165 359100 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
166
167
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 2350028 if (ccp) {
168
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 1697818 if (ccp & 8)
169 968959 asv2_put_level(a, &a->pb, block[index + 0]);
170
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 1697818 if (ccp & 4)
171 1014552 asv2_put_level(a, &a->pb, block[index + 8]);
172
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 1697818 if (ccp & 2)
173 951514 asv2_put_level(a, &a->pb, block[index + 1]);
174
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 1697818 if (ccp & 1)
175 725384 asv2_put_level(a, &a->pb, block[index + 9]);
176 }
177 }
178 359100 }
179
180 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
181
182 119700 static inline int encode_mb(ASVEncContext *a, int16_t block[6][64])
183 {
184 int i;
185
186
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 119700 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
187
188
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 119700 if (a->c.avctx->codec_id == AV_CODEC_ID_ASV1) {
189
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 418950 for (i = 0; i < 6; i++)
190 359100 asv1_encode_block(a, block[i]);
191 } else {
192
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 418950 for (i = 0; i < 6; i++) {
193 359100 asv2_encode_block(a, block[i]);
194 }
195 }
196 119700 return 0;
197 }
198
199 119700 static inline void dct_get(ASVEncContext *a, const AVFrame *frame,
200 int mb_x, int mb_y)
201 {
202 119700 int16_t (*block)[64] = a->block;
203 119700 int linesize = frame->linesize[0];
204 int i;
205
206 119700 const uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
207 119700 const uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
208 119700 const uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
209
210 119700 a->pdsp.get_pixels(block[0], ptr_y, linesize);
211 119700 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
212 119700 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
213 119700 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
214
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 598500 for (i = 0; i < 4; i++)
215 478800 a->fdsp.fdct(block[i]);
216
217
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 119700 if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) {
218 119700 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
219 119700 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
220
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 359100 for (i = 4; i < 6; i++)
221 239400 a->fdsp.fdct(block[i]);
222 }
223 119700 }
224
225 500 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
226 const AVFrame *pict, int *got_packet)
227 {
228 500 ASVEncContext *const a = avctx->priv_data;
229 500 const ASVCommonContext *const c = &a->c;
230 int size, ret;
231
232
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 500 if (pict->width % 16 || pict->height % 16) {
233 100 AVFrame *clone = av_frame_alloc();
234 int i;
235
236
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 100 if (!clone)
237 ✗ return AVERROR(ENOMEM);
238 100 clone->format = pict->format;
239 100 clone->width = FFALIGN(pict->width, 16);
240 100 clone->height = FFALIGN(pict->height, 16);
241 100 ret = av_frame_get_buffer(clone, 0);
242
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 100 if (ret < 0) {
243 ✗ av_frame_free(&clone);
244 ✗ return ret;
245 }
246
247 100 ret = av_frame_copy(clone, pict);
248
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 100 if (ret < 0) {
249 ✗ av_frame_free(&clone);
250 ✗ return ret;
251 }
252
253
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 400 for (i = 0; i<3; i++) {
254 int x, y;
255 300 int w = AV_CEIL_RSHIFT(pict->width, !!i);
256 300 int h = AV_CEIL_RSHIFT(pict->height, !!i);
257 300 int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
258 300 int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
259
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 7100 for (y=0; y<h; y++)
260
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 78200 for (x=w; x<w2; x++)
261 71400 clone->data[i][x + y*clone->linesize[i]] =
262 71400 clone->data[i][w - 1 + y*clone->linesize[i]];
263
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 3100 for (y=h; y<h2; y++)
264
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 103600 for (x=0; x<w2; x++)
265 100800 clone->data[i][x + y*clone->linesize[i]] =
266 100800 clone->data[i][x + (h-1)*clone->linesize[i]];
267 }
268 100 ret = encode_frame(avctx, pkt, clone, got_packet);
269
270 100 av_frame_free(&clone);
271 100 return ret;
272 }
273
274
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 400 if ((ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE +
275 AV_INPUT_BUFFER_MIN_SIZE)) < 0)
276 ✗ return ret;
277
278 400 init_put_bits(&a->pb, pkt->data, pkt->size);
279
280
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 6000 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
281
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 124800 for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) {
282 119200 dct_get(a, pict, mb_x, mb_y);
283 119200 encode_mb(a, a->block);
284 }
285 }
286
287
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 400 if (c->mb_width2 != c->mb_width) {
288 100 int mb_x = c->mb_width2;
289
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 300 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
290 200 dct_get(a, pict, mb_x, mb_y);
291 200 encode_mb(a, a->block);
292 }
293 }
294
295
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 400 if (c->mb_height2 != c->mb_height) {
296 100 int mb_y = c->mb_height2;
297
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 400 for (int mb_x = 0; mb_x < c->mb_width; mb_x++) {
298 300 dct_get(a, pict, mb_x, mb_y);
299 300 encode_mb(a, a->block);
300 }
301 }
302
303
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1)
304 200 flush_put_bits(&a->pb);
305 else
306 200 flush_put_bits_le(&a->pb);
307 400 AV_WN32(put_bits_ptr(&a->pb), 0);
308 400 size = (put_bytes_output(&a->pb) + 3) / 4;
309
310
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1) {
311 200 c->bbdsp.bswap_buf((uint32_t *) pkt->data,
312 200 (uint32_t *) pkt->data, size);
313 }
314
315 400 pkt->size = size * 4;
316 400 *got_packet = 1;
317
318 400 return 0;
319 }
320
321 8 static av_cold int encode_init(AVCodecContext *avctx)
322 {
323 8 ASVEncContext *const a = avctx->priv_data;
324 int i;
325
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 8 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
326 int inv_qscale;
327
328 8 ff_asv_common_init(avctx);
329 8 ff_fdctdsp_init(&a->fdsp, avctx);
330 8 ff_pixblockdsp_init(&a->pdsp, avctx);
331
332
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 8 if (avctx->global_quality <= 0)
333 ✗ avctx->global_quality = 4 * FF_QUALITY_SCALE;
334
335 8 inv_qscale = (32 * scale * FF_QUALITY_SCALE +
336 8 avctx->global_quality / 2) / avctx->global_quality;
337
338 8 avctx->extradata = av_mallocz(8);
339
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 8 if (!avctx->extradata)
340 ✗ return AVERROR(ENOMEM);
341 8 avctx->extradata_size = 8;
342 8 AV_WLA(32, avctx->extradata, inv_qscale);
343 8 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
344
345
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 520 for (i = 0; i < 64; i++) {
346
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 512 if (a->fdsp.fdct == ff_fdct_ifast) {
347 512 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
348 512 a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q;
349 } else {
350 ✗ int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
351 ✗ a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q;
352 }
353 }
354
355 8 return 0;
356 }
357
358 #if CONFIG_ASV1_ENCODER
359 const FFCodec ff_asv1_encoder = {
360 .p.name = "asv1",
361 CODEC_LONG_NAME("ASUS V1"),
362 .p.type = AVMEDIA_TYPE_VIDEO,
363 .p.id = AV_CODEC_ID_ASV1,
364 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
365 .priv_data_size = sizeof(ASVEncContext),
366 .init = encode_init,
367 FF_CODEC_ENCODE_CB(encode_frame),
368 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
369 AV_PIX_FMT_NONE },
370 };
371 #endif
372
373 #if CONFIG_ASV2_ENCODER
374 const FFCodec ff_asv2_encoder = {
375 .p.name = "asv2",
376 CODEC_LONG_NAME("ASUS V2"),
377 .p.type = AVMEDIA_TYPE_VIDEO,
378 .p.id = AV_CODEC_ID_ASV2,
379 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
380 .priv_data_size = sizeof(ASVEncContext),
381 .init = encode_init,
382 FF_CODEC_ENCODE_CB(encode_frame),
383 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
384 AV_PIX_FMT_NONE },
385 };
386 #endif
387