FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/asvenc.c
Date: 2022-12-09 07:38:14
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 "dct.h"
37 #include "encode.h"
38 #include "fdctdsp.h"
39 #include "mpeg12data.h"
40 #include "pixblockdsp.h"
41 #include "put_bits.h"
42
43 typedef struct ASVEncContext {
44 ASVCommonContext c;
45
46 PutBitContext pb;
47
48 PixblockDSPContext pdsp;
49 FDCTDSPContext fdsp;
50 DECLARE_ALIGNED(32, int16_t, block)[6][64];
51 int q_intra_matrix[64];
52 } ASVEncContext;
53
54 2972884 static inline void asv1_put_level(PutBitContext *pb, int level)
55 {
56 2972884 unsigned int index = level + 3;
57
58
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2972884 if (index <= 6) {
59 2543172 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
60 } else {
61 429712 put_bits(pb, 3, 0); /* Escape code */
62 429712 put_sbits(pb, 8, level);
63 }
64 2972884 }
65
66 3660409 static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level)
67 {
68 3660409 unsigned int index = level + 31;
69
70
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3660409 if (index <= 62) {
71 3659796 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
72 } else {
73 613 put_bits_le(pb, 5, 0); /* Escape code */
74
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613 if (level < -128 || level > 127) {
75 av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
76 level = av_clip_int8(level);
77 }
78 613 put_bits_le(pb, 8, level & 0xFF);
79 }
80 3660409 }
81
82 359100 static inline void asv1_encode_block(ASVEncContext *a, int16_t block[64])
83 {
84 int i;
85 359100 int nc_count = 0;
86
87 359100 put_bits(&a->pb, 8, (block[0] + 32) >> 6);
88 359100 block[0] = 0;
89
90
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3950100 for (i = 0; i < 10; i++) {
91 3591000 const int index = ff_asv_scantab[4 * i];
92 3591000 int ccp = 0;
93
94 3591000 if ((block[index + 0] = (block[index + 0] *
95
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3591000 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
96 759471 ccp |= 8;
97 3591000 if ((block[index + 8] = (block[index + 8] *
98
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3591000 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
99 828513 ccp |= 4;
100 3591000 if ((block[index + 1] = (block[index + 1] *
101
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3591000 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
102 781213 ccp |= 2;
103 3591000 if ((block[index + 9] = (block[index + 9] *
104
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3591000 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
105 603687 ccp |= 1;
106
107
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3591000 if (ccp) {
108
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1769652 for (; nc_count; nc_count--)
109 405258 put_bits(&a->pb, 2, 2); /* Skip */
110
111 1364394 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
112
113
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1364394 if (ccp & 8)
114 759471 asv1_put_level(&a->pb, block[index + 0]);
115
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1364394 if (ccp & 4)
116 828513 asv1_put_level(&a->pb, block[index + 8]);
117
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1364394 if (ccp & 2)
118 781213 asv1_put_level(&a->pb, block[index + 1]);
119
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1364394 if (ccp & 1)
120 603687 asv1_put_level(&a->pb, block[index + 9]);
121 } else {
122 2226606 nc_count++;
123 }
124 }
125 359100 put_bits(&a->pb, 5, 0xF); /* End of block */
126 359100 }
127
128 359100 static inline void asv2_encode_block(ASVEncContext *a, int16_t block[64])
129 {
130 int i;
131 359100 int count = 0;
132
133
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14496453 for (count = 63; count > 3; count--) {
134 14433466 const int index = ff_asv_scantab[count];
135
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14433466 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
136 296113 break;
137 }
138
139 359100 count >>= 2;
140
141 359100 put_bits_le(&a->pb, 4, count);
142 359100 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
143 359100 block[0] = 0;
144
145
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2709128 for (i = 0; i <= count; i++) {
146 2350028 const int index = ff_asv_scantab[4 * i];
147 2350028 int ccp = 0;
148
149 2350028 if ((block[index + 0] = (block[index + 0] *
150
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2350028 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
151 968959 ccp |= 8;
152 2350028 if ((block[index + 8] = (block[index + 8] *
153
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2350028 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
154 1014552 ccp |= 4;
155 2350028 if ((block[index + 1] = (block[index + 1] *
156
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2350028 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
157 951514 ccp |= 2;
158 2350028 if ((block[index + 9] = (block[index + 9] *
159
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2350028 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
160 725384 ccp |= 1;
161
162 av_assert2(i || ccp < 8);
163
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2350028 if (i)
164 1990928 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
165 else
166 359100 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
167
168
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2350028 if (ccp) {
169
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1697818 if (ccp & 8)
170 968959 asv2_put_level(a, &a->pb, block[index + 0]);
171
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1697818 if (ccp & 4)
172 1014552 asv2_put_level(a, &a->pb, block[index + 8]);
173
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1697818 if (ccp & 2)
174 951514 asv2_put_level(a, &a->pb, block[index + 1]);
175
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1697818 if (ccp & 1)
176 725384 asv2_put_level(a, &a->pb, block[index + 9]);
177 }
178 }
179 359100 }
180
181 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
182
183 119700 static inline int encode_mb(ASVEncContext *a, int16_t block[6][64])
184 {
185 int i;
186
187
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119700 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
188
189
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119700 if (a->c.avctx->codec_id == AV_CODEC_ID_ASV1) {
190
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418950 for (i = 0; i < 6; i++)
191 359100 asv1_encode_block(a, block[i]);
192 } else {
193
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418950 for (i = 0; i < 6; i++) {
194 359100 asv2_encode_block(a, block[i]);
195 }
196 }
197 119700 return 0;
198 }
199
200 119700 static inline void dct_get(ASVEncContext *a, const AVFrame *frame,
201 int mb_x, int mb_y)
202 {
203 119700 int16_t (*block)[64] = a->block;
204 119700 int linesize = frame->linesize[0];
205 int i;
206
207 119700 const uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
208 119700 const uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
209 119700 const uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
210
211 119700 a->pdsp.get_pixels(block[0], ptr_y, linesize);
212 119700 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
213 119700 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
214 119700 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
215
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598500 for (i = 0; i < 4; i++)
216 478800 a->fdsp.fdct(block[i]);
217
218
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119700 if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) {
219 119700 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
220 119700 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
221
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359100 for (i = 4; i < 6; i++)
222 239400 a->fdsp.fdct(block[i]);
223 }
224 119700 }
225
226 500 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
227 const AVFrame *pict, int *got_packet)
228 {
229 500 ASVEncContext *const a = avctx->priv_data;
230 500 const ASVCommonContext *const c = &a->c;
231 int size, ret;
232
233
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500 if (pict->width % 16 || pict->height % 16) {
234 100 AVFrame *clone = av_frame_alloc();
235 int i;
236
237
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100 if (!clone)
238 return AVERROR(ENOMEM);
239 100 clone->format = pict->format;
240 100 clone->width = FFALIGN(pict->width, 16);
241 100 clone->height = FFALIGN(pict->height, 16);
242 100 ret = av_frame_get_buffer(clone, 0);
243
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100 if (ret < 0) {
244 av_frame_free(&clone);
245 return ret;
246 }
247
248 100 ret = av_frame_copy(clone, pict);
249
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100 if (ret < 0) {
250 av_frame_free(&clone);
251 return ret;
252 }
253
254
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400 for (i = 0; i<3; i++) {
255 int x, y;
256 300 int w = AV_CEIL_RSHIFT(pict->width, !!i);
257 300 int h = AV_CEIL_RSHIFT(pict->height, !!i);
258 300 int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
259 300 int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
260
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7100 for (y=0; y<h; y++)
261
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78200 for (x=w; x<w2; x++)
262 71400 clone->data[i][x + y*clone->linesize[i]] =
263 71400 clone->data[i][w - 1 + y*clone->linesize[i]];
264
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3100 for (y=h; y<h2; y++)
265
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103600 for (x=0; x<w2; x++)
266 100800 clone->data[i][x + y*clone->linesize[i]] =
267 100800 clone->data[i][x + (h-1)*clone->linesize[i]];
268 }
269 100 ret = encode_frame(avctx, pkt, clone, got_packet);
270
271 100 av_frame_free(&clone);
272 100 return ret;
273 }
274
275
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400 if ((ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE +
276 AV_INPUT_BUFFER_MIN_SIZE)) < 0)
277 return ret;
278
279 400 init_put_bits(&a->pb, pkt->data, pkt->size);
280
281
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6000 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
282
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124800 for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) {
283 119200 dct_get(a, pict, mb_x, mb_y);
284 119200 encode_mb(a, a->block);
285 }
286 }
287
288
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400 if (c->mb_width2 != c->mb_width) {
289 100 int mb_x = c->mb_width2;
290
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300 for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
291 200 dct_get(a, pict, mb_x, mb_y);
292 200 encode_mb(a, a->block);
293 }
294 }
295
296
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400 if (c->mb_height2 != c->mb_height) {
297 100 int mb_y = c->mb_height2;
298
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400 for (int mb_x = 0; mb_x < c->mb_width; mb_x++) {
299 300 dct_get(a, pict, mb_x, mb_y);
300 300 encode_mb(a, a->block);
301 }
302 }
303
304
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400 if (avctx->codec_id == AV_CODEC_ID_ASV1)
305 200 flush_put_bits(&a->pb);
306 else
307 200 flush_put_bits_le(&a->pb);
308 400 AV_WN32(put_bits_ptr(&a->pb), 0);
309 400 size = (put_bytes_output(&a->pb) + 3) / 4;
310
311
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400 if (avctx->codec_id == AV_CODEC_ID_ASV1) {
312 200 c->bbdsp.bswap_buf((uint32_t *) pkt->data,
313 200 (uint32_t *) pkt->data, size);
314 }
315
316 400 pkt->size = size * 4;
317 400 *got_packet = 1;
318
319 400 return 0;
320 }
321
322 8 static av_cold int encode_init(AVCodecContext *avctx)
323 {
324 8 ASVEncContext *const a = avctx->priv_data;
325 int i;
326
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8 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
327 int inv_qscale;
328
329 8 ff_asv_common_init(avctx);
330 8 ff_fdctdsp_init(&a->fdsp, avctx);
331 8 ff_pixblockdsp_init(&a->pdsp, avctx);
332
333
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8 if (avctx->global_quality <= 0)
334 avctx->global_quality = 4 * FF_QUALITY_SCALE;
335
336 8 inv_qscale = (32 * scale * FF_QUALITY_SCALE +
337 8 avctx->global_quality / 2) / avctx->global_quality;
338
339 8 avctx->extradata = av_mallocz(8);
340
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8 if (!avctx->extradata)
341 return AVERROR(ENOMEM);
342 8 avctx->extradata_size = 8;
343 8 AV_WLA(32, avctx->extradata, inv_qscale);
344 8 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
345
346
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520 for (i = 0; i < 64; i++) {
347
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512 if (a->fdsp.fdct == ff_fdct_ifast) {
348 512 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
349 512 a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q;
350 } else {
351 int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
352 a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q;
353 }
354 }
355
356 8 return 0;
357 }
358
359 #if CONFIG_ASV1_ENCODER
360 const FFCodec ff_asv1_encoder = {
361 .p.name = "asv1",
362 CODEC_LONG_NAME("ASUS V1"),
363 .p.type = AVMEDIA_TYPE_VIDEO,
364 .p.id = AV_CODEC_ID_ASV1,
365 .p.capabilities = AV_CODEC_CAP_DR1,
366 .priv_data_size = sizeof(ASVEncContext),
367 .init = encode_init,
368 FF_CODEC_ENCODE_CB(encode_frame),
369 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
370 AV_PIX_FMT_NONE },
371 };
372 #endif
373
374 #if CONFIG_ASV2_ENCODER
375 const FFCodec ff_asv2_encoder = {
376 .p.name = "asv2",
377 CODEC_LONG_NAME("ASUS V2"),
378 .p.type = AVMEDIA_TYPE_VIDEO,
379 .p.id = AV_CODEC_ID_ASV2,
380 .p.capabilities = AV_CODEC_CAP_DR1,
381 .priv_data_size = sizeof(ASVEncContext),
382 .init = encode_init,
383 FF_CODEC_ENCODE_CB(encode_frame),
384 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
385 AV_PIX_FMT_NONE },
386 };
387 #endif
388