FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/asvenc.c
Date: 2022-07-04 00:18:54
Exec Total Coverage
Lines: 188 200 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 "config_components.h"
27
28 #include "libavutil/attributes.h"
29 #include "libavutil/mem.h"
30
31 #include "aandcttab.h"
32 #include "asv.h"
33 #include "avcodec.h"
34 #include "codec_internal.h"
35 #include "dct.h"
36 #include "encode.h"
37 #include "fdctdsp.h"
38 #include "mpeg12data.h"
39
40 2972884 static inline void asv1_put_level(PutBitContext *pb, int level)
41 {
42 2972884 unsigned int index = level + 3;
43
44
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2972884 if (index <= 6) {
45 2543172 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
46 } else {
47 429712 put_bits(pb, 3, 0); /* Escape code */
48 429712 put_sbits(pb, 8, level);
49 }
50 2972884 }
51
52 3660409 static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
53 {
54 3660409 unsigned int index = level + 31;
55
56
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3660409 if (index <= 62) {
57 3659796 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
58 } else {
59 613 put_bits_le(pb, 5, 0); /* Escape code */
60
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613 if (level < -128 || level > 127) {
61 av_log(a->avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
62 level = av_clip_int8(level);
63 }
64 613 put_bits_le(pb, 8, level & 0xFF);
65 }
66 3660409 }
67
68 359100 static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
69 {
70 int i;
71 359100 int nc_count = 0;
72
73 359100 put_bits(&a->pb, 8, (block[0] + 32) >> 6);
74 359100 block[0] = 0;
75
76
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3950100 for (i = 0; i < 10; i++) {
77 3591000 const int index = ff_asv_scantab[4 * i];
78 3591000 int ccp = 0;
79
80 3591000 if ((block[index + 0] = (block[index + 0] *
81
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3591000 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
82 759471 ccp |= 8;
83 3591000 if ((block[index + 8] = (block[index + 8] *
84
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3591000 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
85 828513 ccp |= 4;
86 3591000 if ((block[index + 1] = (block[index + 1] *
87
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3591000 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
88 781213 ccp |= 2;
89 3591000 if ((block[index + 9] = (block[index + 9] *
90
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3591000 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
91 603687 ccp |= 1;
92
93
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3591000 if (ccp) {
94
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1769652 for (; nc_count; nc_count--)
95 405258 put_bits(&a->pb, 2, 2); /* Skip */
96
97 1364394 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
98
99
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1364394 if (ccp & 8)
100 759471 asv1_put_level(&a->pb, block[index + 0]);
101
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1364394 if (ccp & 4)
102 828513 asv1_put_level(&a->pb, block[index + 8]);
103
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1364394 if (ccp & 2)
104 781213 asv1_put_level(&a->pb, block[index + 1]);
105
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1364394 if (ccp & 1)
106 603687 asv1_put_level(&a->pb, block[index + 9]);
107 } else {
108 2226606 nc_count++;
109 }
110 }
111 359100 put_bits(&a->pb, 5, 0xF); /* End of block */
112 359100 }
113
114 359100 static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
115 {
116 int i;
117 359100 int count = 0;
118
119
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14496453 for (count = 63; count > 3; count--) {
120 14433466 const int index = ff_asv_scantab[count];
121
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14433466 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
122 296113 break;
123 }
124
125 359100 count >>= 2;
126
127 359100 put_bits_le(&a->pb, 4, count);
128 359100 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
129 359100 block[0] = 0;
130
131
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2709128 for (i = 0; i <= count; i++) {
132 2350028 const int index = ff_asv_scantab[4 * i];
133 2350028 int ccp = 0;
134
135 2350028 if ((block[index + 0] = (block[index + 0] *
136
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2350028 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
137 968959 ccp |= 8;
138 2350028 if ((block[index + 8] = (block[index + 8] *
139
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2350028 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
140 1014552 ccp |= 4;
141 2350028 if ((block[index + 1] = (block[index + 1] *
142
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2350028 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
143 951514 ccp |= 2;
144 2350028 if ((block[index + 9] = (block[index + 9] *
145
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2350028 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
146 725384 ccp |= 1;
147
148 av_assert2(i || ccp < 8);
149
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2350028 if (i)
150 1990928 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
151 else
152 359100 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
153
154
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2350028 if (ccp) {
155
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1697818 if (ccp & 8)
156 968959 asv2_put_level(a, &a->pb, block[index + 0]);
157
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1697818 if (ccp & 4)
158 1014552 asv2_put_level(a, &a->pb, block[index + 8]);
159
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1697818 if (ccp & 2)
160 951514 asv2_put_level(a, &a->pb, block[index + 1]);
161
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1697818 if (ccp & 1)
162 725384 asv2_put_level(a, &a->pb, block[index + 9]);
163 }
164 }
165 359100 }
166
167 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
168
169 119700 static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
170 {
171 int i;
172
173
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119700 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
174
175
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119700 if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
176
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418950 for (i = 0; i < 6; i++)
177 359100 asv1_encode_block(a, block[i]);
178 } else {
179
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418950 for (i = 0; i < 6; i++) {
180 359100 asv2_encode_block(a, block[i]);
181 }
182 }
183 119700 return 0;
184 }
185
186 119700 static inline void dct_get(ASV1Context *a, const AVFrame *frame,
187 int mb_x, int mb_y)
188 {
189 119700 int16_t (*block)[64] = a->block;
190 119700 int linesize = frame->linesize[0];
191 int i;
192
193 119700 uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
194 119700 uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
195 119700 uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
196
197 119700 a->pdsp.get_pixels(block[0], ptr_y, linesize);
198 119700 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
199 119700 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
200 119700 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
201
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598500 for (i = 0; i < 4; i++)
202 478800 a->fdsp.fdct(block[i]);
203
204
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119700 if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) {
205 119700 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
206 119700 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
207
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359100 for (i = 4; i < 6; i++)
208 239400 a->fdsp.fdct(block[i]);
209 }
210 119700 }
211
212 500 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
213 const AVFrame *pict, int *got_packet)
214 {
215 500 ASV1Context *const a = avctx->priv_data;
216 int size, ret;
217 int mb_x, mb_y;
218
219
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500 if (pict->width % 16 || pict->height % 16) {
220 100 AVFrame *clone = av_frame_alloc();
221 int i;
222
223
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100 if (!clone)
224 return AVERROR(ENOMEM);
225 100 clone->format = pict->format;
226 100 clone->width = FFALIGN(pict->width, 16);
227 100 clone->height = FFALIGN(pict->height, 16);
228 100 ret = av_frame_get_buffer(clone, 0);
229
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100 if (ret < 0) {
230 av_frame_free(&clone);
231 return ret;
232 }
233
234 100 ret = av_frame_copy(clone, pict);
235
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100 if (ret < 0) {
236 av_frame_free(&clone);
237 return ret;
238 }
239
240
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400 for (i = 0; i<3; i++) {
241 int x, y;
242 300 int w = AV_CEIL_RSHIFT(pict->width, !!i);
243 300 int h = AV_CEIL_RSHIFT(pict->height, !!i);
244 300 int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
245 300 int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
246
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7100 for (y=0; y<h; y++)
247
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78200 for (x=w; x<w2; x++)
248 71400 clone->data[i][x + y*clone->linesize[i]] =
249 71400 clone->data[i][w - 1 + y*clone->linesize[i]];
250
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3100 for (y=h; y<h2; y++)
251
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103600 for (x=0; x<w2; x++)
252 100800 clone->data[i][x + y*clone->linesize[i]] =
253 100800 clone->data[i][x + (h-1)*clone->linesize[i]];
254 }
255 100 ret = encode_frame(avctx, pkt, clone, got_packet);
256
257 100 av_frame_free(&clone);
258 100 return ret;
259 }
260
261
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400 if ((ret = ff_alloc_packet(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
262 AV_INPUT_BUFFER_MIN_SIZE)) < 0)
263 return ret;
264
265 400 init_put_bits(&a->pb, pkt->data, pkt->size);
266
267
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6000 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
268
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124800 for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
269 119200 dct_get(a, pict, mb_x, mb_y);
270 119200 encode_mb(a, a->block);
271 }
272 }
273
274
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400 if (a->mb_width2 != a->mb_width) {
275 100 mb_x = a->mb_width2;
276
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300 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
277 200 dct_get(a, pict, mb_x, mb_y);
278 200 encode_mb(a, a->block);
279 }
280 }
281
282
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400 if (a->mb_height2 != a->mb_height) {
283 100 mb_y = a->mb_height2;
284
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400 for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
285 300 dct_get(a, pict, mb_x, mb_y);
286 300 encode_mb(a, a->block);
287 }
288 }
289 400 emms_c();
290
291
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400 if (avctx->codec_id == AV_CODEC_ID_ASV1)
292 200 flush_put_bits(&a->pb);
293 else
294 200 flush_put_bits_le(&a->pb);
295 400 AV_WN32(put_bits_ptr(&a->pb), 0);
296 400 size = (put_bytes_output(&a->pb) + 3) / 4;
297
298
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400 if (avctx->codec_id == AV_CODEC_ID_ASV1) {
299 200 a->bbdsp.bswap_buf((uint32_t *) pkt->data,
300 200 (uint32_t *) pkt->data, size);
301 }
302
303 400 pkt->size = size * 4;
304 400 *got_packet = 1;
305
306 400 return 0;
307 }
308
309 8 static av_cold int encode_init(AVCodecContext *avctx)
310 {
311 8 ASV1Context *const a = avctx->priv_data;
312 int i;
313
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8 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
314
315 8 ff_asv_common_init(avctx);
316 8 ff_fdctdsp_init(&a->fdsp, avctx);
317 8 ff_pixblockdsp_init(&a->pdsp, avctx);
318
319
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8 if (avctx->global_quality <= 0)
320 avctx->global_quality = 4 * FF_QUALITY_SCALE;
321
322 8 a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
323 8 avctx->global_quality / 2) / avctx->global_quality;
324
325 8 avctx->extradata = av_mallocz(8);
326
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8 if (!avctx->extradata)
327 return AVERROR(ENOMEM);
328 8 avctx->extradata_size = 8;
329 8 ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
330 8 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
331
332
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520 for (i = 0; i < 64; i++) {
333
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512 if (a->fdsp.fdct == ff_fdct_ifast) {
334 512 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
335 512 a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
336 } else {
337 int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
338 a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
339 }
340 }
341
342 8 return 0;
343 }
344
345 #if CONFIG_ASV1_ENCODER
346 const FFCodec ff_asv1_encoder = {
347 .p.name = "asv1",
348 .p.long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
349 .p.type = AVMEDIA_TYPE_VIDEO,
350 .p.id = AV_CODEC_ID_ASV1,
351 .priv_data_size = sizeof(ASV1Context),
352 .init = encode_init,
353 FF_CODEC_ENCODE_CB(encode_frame),
354 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
355 AV_PIX_FMT_NONE },
356 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
357 };
358 #endif
359
360 #if CONFIG_ASV2_ENCODER
361 const FFCodec ff_asv2_encoder = {
362 .p.name = "asv2",
363 .p.long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
364 .p.type = AVMEDIA_TYPE_VIDEO,
365 .p.id = AV_CODEC_ID_ASV2,
366 .priv_data_size = sizeof(ASV1Context),
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 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
372 };
373 #endif
374