Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/asvenc.c |
Date: | 2022-07-04 00:18:54 |
Exec | Total | Coverage | |
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Lines: | 188 | 200 | 94.0% |
Branches: | 106 | 118 | 89.8% |
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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 |