FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/asvenc.c
Date: 2021-09-23 20:34:37
Exec Total Coverage
Lines: 189 201 94.0%
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 "libavutil/attributes.h"
27 #include "libavutil/mem.h"
28
29 #include "aandcttab.h"
30 #include "asv.h"
31 #include "avcodec.h"
32 #include "dct.h"
33 #include "encode.h"
34 #include "fdctdsp.h"
35 #include "internal.h"
36 #include "mpeg12data.h"
37
38 2972884 static inline void asv1_put_level(PutBitContext *pb, int level)
39 {
40 2972884 unsigned int index = level + 3;
41
42
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 2972884 if (index <= 6) {
43 2543172 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
44 } else {
45 429712 put_bits(pb, 3, 0); /* Escape code */
46 429712 put_sbits(pb, 8, level);
47 }
48 2972884 }
49
50 3660409 static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
51 {
52 3660409 unsigned int index = level + 31;
53
54
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 3660409 if (index <= 62) {
55 3659796 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
56 } else {
57 613 put_bits_le(pb, 5, 0); /* Escape code */
58
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 613 if (level < -128 || level > 127) {
59 ✗ av_log(a->avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
60 ✗ level = av_clip_int8(level);
61 }
62 613 put_bits_le(pb, 8, level & 0xFF);
63 }
64 3660409 }
65
66 359100 static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
67 {
68 int i;
69 359100 int nc_count = 0;
70
71 359100 put_bits(&a->pb, 8, (block[0] + 32) >> 6);
72 359100 block[0] = 0;
73
74
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 3950100 for (i = 0; i < 10; i++) {
75 3591000 const int index = ff_asv_scantab[4 * i];
76 3591000 int ccp = 0;
77
78 3591000 if ((block[index + 0] = (block[index + 0] *
79
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 3591000 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
80 759471 ccp |= 8;
81 3591000 if ((block[index + 8] = (block[index + 8] *
82
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 3591000 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
83 828513 ccp |= 4;
84 3591000 if ((block[index + 1] = (block[index + 1] *
85
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 3591000 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
86 781213 ccp |= 2;
87 3591000 if ((block[index + 9] = (block[index + 9] *
88
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 3591000 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
89 603687 ccp |= 1;
90
91
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 3591000 if (ccp) {
92
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 1769652 for (; nc_count; nc_count--)
93 405258 put_bits(&a->pb, 2, 2); /* Skip */
94
95 1364394 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
96
97
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 1364394 if (ccp & 8)
98 759471 asv1_put_level(&a->pb, block[index + 0]);
99
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 1364394 if (ccp & 4)
100 828513 asv1_put_level(&a->pb, block[index + 8]);
101
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 1364394 if (ccp & 2)
102 781213 asv1_put_level(&a->pb, block[index + 1]);
103
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 1364394 if (ccp & 1)
104 603687 asv1_put_level(&a->pb, block[index + 9]);
105 } else {
106 2226606 nc_count++;
107 }
108 }
109 359100 put_bits(&a->pb, 5, 0xF); /* End of block */
110 359100 }
111
112 359100 static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
113 {
114 int i;
115 359100 int count = 0;
116
117
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 14496453 for (count = 63; count > 3; count--) {
118 14433466 const int index = ff_asv_scantab[count];
119
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 14433466 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
120 296113 break;
121 }
122
123 359100 count >>= 2;
124
125 359100 put_bits_le(&a->pb, 4, count);
126 359100 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
127 359100 block[0] = 0;
128
129
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 2709128 for (i = 0; i <= count; i++) {
130 2350028 const int index = ff_asv_scantab[4 * i];
131 2350028 int ccp = 0;
132
133 2350028 if ((block[index + 0] = (block[index + 0] *
134
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 2350028 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
135 968959 ccp |= 8;
136 2350028 if ((block[index + 8] = (block[index + 8] *
137
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 2350028 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
138 1014552 ccp |= 4;
139 2350028 if ((block[index + 1] = (block[index + 1] *
140
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 2350028 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
141 951514 ccp |= 2;
142 2350028 if ((block[index + 9] = (block[index + 9] *
143
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 2350028 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
144 725384 ccp |= 1;
145
146 av_assert2(i || ccp < 8);
147
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 2350028 if (i)
148 1990928 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
149 else
150 359100 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
151
152
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 2350028 if (ccp) {
153
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 1697818 if (ccp & 8)
154 968959 asv2_put_level(a, &a->pb, block[index + 0]);
155
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 1697818 if (ccp & 4)
156 1014552 asv2_put_level(a, &a->pb, block[index + 8]);
157
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 1697818 if (ccp & 2)
158 951514 asv2_put_level(a, &a->pb, block[index + 1]);
159
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 1697818 if (ccp & 1)
160 725384 asv2_put_level(a, &a->pb, block[index + 9]);
161 }
162 }
163 359100 }
164
165 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
166
167 119700 static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
168 {
169 int i;
170
171
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 119700 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
172
173
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 119700 if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
174
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 418950 for (i = 0; i < 6; i++)
175 359100 asv1_encode_block(a, block[i]);
176 } else {
177
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 418950 for (i = 0; i < 6; i++) {
178 359100 asv2_encode_block(a, block[i]);
179 }
180 }
181 119700 return 0;
182 }
183
184 119700 static inline void dct_get(ASV1Context *a, const AVFrame *frame,
185 int mb_x, int mb_y)
186 {
187 119700 int16_t (*block)[64] = a->block;
188 119700 int linesize = frame->linesize[0];
189 int i;
190
191 119700 uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
192 119700 uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
193 119700 uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
194
195 119700 a->pdsp.get_pixels(block[0], ptr_y, linesize);
196 119700 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
197 119700 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
198 119700 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
199
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 598500 for (i = 0; i < 4; i++)
200 478800 a->fdsp.fdct(block[i]);
201
202
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 119700 if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) {
203 119700 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
204 119700 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
205
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 359100 for (i = 4; i < 6; i++)
206 239400 a->fdsp.fdct(block[i]);
207 }
208 119700 }
209
210 500 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
211 const AVFrame *pict, int *got_packet)
212 {
213 500 ASV1Context *const a = avctx->priv_data;
214 int size, ret;
215 int mb_x, mb_y;
216
217
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 500 if (pict->width % 16 || pict->height % 16) {
218 100 AVFrame *clone = av_frame_alloc();
219 int i;
220
221
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 100 if (!clone)
222 ✗ return AVERROR(ENOMEM);
223 100 clone->format = pict->format;
224 100 clone->width = FFALIGN(pict->width, 16);
225 100 clone->height = FFALIGN(pict->height, 16);
226 100 ret = av_frame_get_buffer(clone, 0);
227
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 100 if (ret < 0) {
228 ✗ av_frame_free(&clone);
229 ✗ return ret;
230 }
231
232 100 ret = av_frame_copy(clone, pict);
233
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 100 if (ret < 0) {
234 ✗ av_frame_free(&clone);
235 ✗ return ret;
236 }
237
238
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 400 for (i = 0; i<3; i++) {
239 int x, y;
240 300 int w = AV_CEIL_RSHIFT(pict->width, !!i);
241 300 int h = AV_CEIL_RSHIFT(pict->height, !!i);
242 300 int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
243 300 int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
244
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 7100 for (y=0; y<h; y++)
245
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 78200 for (x=w; x<w2; x++)
246 71400 clone->data[i][x + y*clone->linesize[i]] =
247 71400 clone->data[i][w - 1 + y*clone->linesize[i]];
248
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 3100 for (y=h; y<h2; y++)
249
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250 100800 clone->data[i][x + y*clone->linesize[i]] =
251 100800 clone->data[i][x + (h-1)*clone->linesize[i]];
252 }
253 100 ret = encode_frame(avctx, pkt, clone, got_packet);
254
255 100 av_frame_free(&clone);
256 100 return ret;
257 }
258
259
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 400 if ((ret = ff_alloc_packet(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
260 AV_INPUT_BUFFER_MIN_SIZE)) < 0)
261 ✗ return ret;
262
263 400 init_put_bits(&a->pb, pkt->data, pkt->size);
264
265
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 6000 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
266
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 124800 for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
267 119200 dct_get(a, pict, mb_x, mb_y);
268 119200 encode_mb(a, a->block);
269 }
270 }
271
272
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 400 if (a->mb_width2 != a->mb_width) {
273 100 mb_x = a->mb_width2;
274
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 300 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
275 200 dct_get(a, pict, mb_x, mb_y);
276 200 encode_mb(a, a->block);
277 }
278 }
279
280
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 400 if (a->mb_height2 != a->mb_height) {
281 100 mb_y = a->mb_height2;
282
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 400 for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
283 300 dct_get(a, pict, mb_x, mb_y);
284 300 encode_mb(a, a->block);
285 }
286 }
287 400 emms_c();
288
289
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1)
290 200 flush_put_bits(&a->pb);
291 else
292 200 flush_put_bits_le(&a->pb);
293 400 AV_WN32(put_bits_ptr(&a->pb), 0);
294 400 size = (put_bytes_output(&a->pb) + 3) / 4;
295
296
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 400 if (avctx->codec_id == AV_CODEC_ID_ASV1) {
297 200 a->bbdsp.bswap_buf((uint32_t *) pkt->data,
298 200 (uint32_t *) pkt->data, size);
299 }
300
301 400 pkt->size = size * 4;
302 400 pkt->flags |= AV_PKT_FLAG_KEY;
303 400 *got_packet = 1;
304
305 400 return 0;
306 }
307
308 8 static av_cold int encode_init(AVCodecContext *avctx)
309 {
310 8 ASV1Context *const a = avctx->priv_data;
311 int i;
312
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 8 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
313
314 8 ff_asv_common_init(avctx);
315 8 ff_fdctdsp_init(&a->fdsp, avctx);
316 8 ff_pixblockdsp_init(&a->pdsp, avctx);
317
318
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 8 if (avctx->global_quality <= 0)
319 ✗ avctx->global_quality = 4 * FF_QUALITY_SCALE;
320
321 8 a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
322 8 avctx->global_quality / 2) / avctx->global_quality;
323
324 8 avctx->extradata = av_mallocz(8);
325
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 8 if (!avctx->extradata)
326 ✗ return AVERROR(ENOMEM);
327 8 avctx->extradata_size = 8;
328 8 ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
329 8 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
330
331
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 520 for (i = 0; i < 64; i++) {
332
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 512 if (a->fdsp.fdct == ff_fdct_ifast) {
333 512 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
334 512 a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
335 } else {
336 ✗ int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
337 ✗ a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
338 }
339 }
340
341 8 return 0;
342 }
343
344 #if CONFIG_ASV1_ENCODER
345 const AVCodec ff_asv1_encoder = {
346 .name = "asv1",
347 .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
348 .type = AVMEDIA_TYPE_VIDEO,
349 .id = AV_CODEC_ID_ASV1,
350 .priv_data_size = sizeof(ASV1Context),
351 .init = encode_init,
352 .encode2 = encode_frame,
353 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
354 AV_PIX_FMT_NONE },
355 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
356 };
357 #endif
358
359 #if CONFIG_ASV2_ENCODER
360 const AVCodec ff_asv2_encoder = {
361 .name = "asv2",
362 .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
363 .type = AVMEDIA_TYPE_VIDEO,
364 .id = AV_CODEC_ID_ASV2,
365 .priv_data_size = sizeof(ASV1Context),
366 .init = encode_init,
367 .encode2 = encode_frame,
368 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
369 AV_PIX_FMT_NONE },
370 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
371 };
372 #endif
373