Commit | Line | Data |
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2ba45a60 DM |
1 | /* |
2 | * Interface to xvidcore for mpeg4 encoding | |
3 | * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * Interface to xvidcore for MPEG-4 compliant encoding. | |
25 | * @author Adam Thayer (krevnik@comcast.net) | |
26 | */ | |
27 | ||
28 | #include <xvid.h> | |
29 | ||
30 | #include "libavutil/cpu.h" | |
31 | #include "libavutil/file.h" | |
32 | #include "libavutil/intreadwrite.h" | |
33 | #include "libavutil/mathematics.h" | |
34 | ||
35 | #include "avcodec.h" | |
36 | #include "internal.h" | |
37 | #include "libxvid.h" | |
38 | #include "mpegvideo.h" | |
39 | ||
40 | #if HAVE_UNISTD_H | |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
44 | #if HAVE_IO_H | |
45 | #include <io.h> | |
46 | #endif | |
47 | ||
48 | /** | |
49 | * Buffer management macros. | |
50 | */ | |
51 | #define BUFFER_SIZE 1024 | |
52 | #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x)) | |
53 | #define BUFFER_CAT(x) (&((x)[strlen(x)])) | |
54 | ||
55 | /** | |
56 | * Structure for the private Xvid context. | |
57 | * This stores all the private context for the codec. | |
58 | */ | |
59 | struct xvid_context { | |
60 | AVClass *class; | |
61 | void *encoder_handle; /**< Handle for Xvid encoder */ | |
62 | int xsize; /**< Frame x size */ | |
63 | int ysize; /**< Frame y size */ | |
64 | int vop_flags; /**< VOP flags for Xvid encoder */ | |
65 | int vol_flags; /**< VOL flags for Xvid encoder */ | |
66 | int me_flags; /**< Motion Estimation flags */ | |
67 | int qscale; /**< Do we use constant scale? */ | |
68 | int quicktime_format; /**< Are we in a QT-based format? */ | |
69 | char *twopassbuffer; /**< Character buffer for two-pass */ | |
70 | char *old_twopassbuffer; /**< Old character buffer (two-pass) */ | |
71 | char *twopassfile; /**< second pass temp file name */ | |
72 | int twopassfd; | |
73 | unsigned char *intra_matrix; /**< P-Frame Quant Matrix */ | |
74 | unsigned char *inter_matrix; /**< I-Frame Quant Matrix */ | |
75 | int lumi_aq; /**< Lumi masking as an aq method */ | |
76 | int variance_aq; /**< Variance adaptive quantization */ | |
77 | int ssim; /**< SSIM information display mode */ | |
78 | int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */ | |
79 | int gmc; | |
80 | }; | |
81 | ||
82 | /** | |
83 | * Structure for the private first-pass plugin. | |
84 | */ | |
85 | struct xvid_ff_pass1 { | |
86 | int version; /**< Xvid version */ | |
87 | struct xvid_context *context; /**< Pointer to private context */ | |
88 | }; | |
89 | ||
90 | static int xvid_encode_close(AVCodecContext *avctx); | |
91 | ||
92 | /* | |
93 | * Xvid 2-Pass Kludge Section | |
94 | * | |
95 | * Xvid's default 2-pass doesn't allow us to create data as we need to, so | |
96 | * this section spends time replacing the first pass plugin so we can write | |
97 | * statistic information as libavcodec requests in. We have another kludge | |
98 | * that allows us to pass data to the second pass in Xvid without a custom | |
99 | * rate-control plugin. | |
100 | */ | |
101 | ||
102 | /** | |
103 | * Initialize the two-pass plugin and context. | |
104 | * | |
105 | * @param param Input construction parameter structure | |
106 | * @param handle Private context handle | |
107 | * @return Returns XVID_ERR_xxxx on failure, or 0 on success. | |
108 | */ | |
109 | static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle) | |
110 | { | |
111 | struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param; | |
112 | char *log = x->context->twopassbuffer; | |
113 | ||
114 | /* Do a quick bounds check */ | |
115 | if (!log) | |
116 | return XVID_ERR_FAIL; | |
117 | ||
118 | /* We use snprintf() */ | |
119 | /* This is because we can safely prevent a buffer overflow */ | |
120 | log[0] = 0; | |
121 | snprintf(log, BUFFER_REMAINING(log), | |
122 | "# ffmpeg 2-pass log file, using xvid codec\n"); | |
123 | snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), | |
124 | "# Do not modify. libxvidcore version: %d.%d.%d\n\n", | |
125 | XVID_VERSION_MAJOR(XVID_VERSION), | |
126 | XVID_VERSION_MINOR(XVID_VERSION), | |
127 | XVID_VERSION_PATCH(XVID_VERSION)); | |
128 | ||
129 | *handle = x->context; | |
130 | return 0; | |
131 | } | |
132 | ||
133 | /** | |
134 | * Destroy the two-pass plugin context. | |
135 | * | |
136 | * @param ref Context pointer for the plugin | |
137 | * @param param Destrooy context | |
138 | * @return Returns 0, success guaranteed | |
139 | */ | |
140 | static int xvid_ff_2pass_destroy(struct xvid_context *ref, | |
141 | xvid_plg_destroy_t *param) | |
142 | { | |
143 | /* Currently cannot think of anything to do on destruction */ | |
144 | /* Still, the framework should be here for reference/use */ | |
145 | if (ref->twopassbuffer) | |
146 | ref->twopassbuffer[0] = 0; | |
147 | return 0; | |
148 | } | |
149 | ||
150 | /** | |
151 | * Enable fast encode mode during the first pass. | |
152 | * | |
153 | * @param ref Context pointer for the plugin | |
154 | * @param param Frame data | |
155 | * @return Returns 0, success guaranteed | |
156 | */ | |
157 | static int xvid_ff_2pass_before(struct xvid_context *ref, | |
158 | xvid_plg_data_t *param) | |
159 | { | |
160 | int motion_remove; | |
161 | int motion_replacements; | |
162 | int vop_remove; | |
163 | ||
164 | /* Nothing to do here, result is changed too much */ | |
165 | if (param->zone && param->zone->mode == XVID_ZONE_QUANT) | |
166 | return 0; | |
167 | ||
168 | /* We can implement a 'turbo' first pass mode here */ | |
169 | param->quant = 2; | |
170 | ||
171 | /* Init values */ | |
172 | motion_remove = ~XVID_ME_CHROMA_PVOP & | |
173 | ~XVID_ME_CHROMA_BVOP & | |
174 | ~XVID_ME_EXTSEARCH16 & | |
175 | ~XVID_ME_ADVANCEDDIAMOND16; | |
176 | motion_replacements = XVID_ME_FAST_MODEINTERPOLATE | | |
177 | XVID_ME_SKIP_DELTASEARCH | | |
178 | XVID_ME_FASTREFINE16 | | |
179 | XVID_ME_BFRAME_EARLYSTOP; | |
180 | vop_remove = ~XVID_VOP_MODEDECISION_RD & | |
181 | ~XVID_VOP_FAST_MODEDECISION_RD & | |
182 | ~XVID_VOP_TRELLISQUANT & | |
183 | ~XVID_VOP_INTER4V & | |
184 | ~XVID_VOP_HQACPRED; | |
185 | ||
186 | param->vol_flags &= ~XVID_VOL_GMC; | |
187 | param->vop_flags &= vop_remove; | |
188 | param->motion_flags &= motion_remove; | |
189 | param->motion_flags |= motion_replacements; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | /** | |
195 | * Capture statistic data and write it during first pass. | |
196 | * | |
197 | * @param ref Context pointer for the plugin | |
198 | * @param param Statistic data | |
199 | * @return Returns XVID_ERR_xxxx on failure, or 0 on success | |
200 | */ | |
201 | static int xvid_ff_2pass_after(struct xvid_context *ref, | |
202 | xvid_plg_data_t *param) | |
203 | { | |
204 | char *log = ref->twopassbuffer; | |
205 | const char *frame_types = " ipbs"; | |
206 | char frame_type; | |
207 | ||
208 | /* Quick bounds check */ | |
209 | if (!log) | |
210 | return XVID_ERR_FAIL; | |
211 | ||
212 | /* Convert the type given to us into a character */ | |
213 | if (param->type < 5 && param->type > 0) | |
214 | frame_type = frame_types[param->type]; | |
215 | else | |
216 | return XVID_ERR_FAIL; | |
217 | ||
218 | snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), | |
219 | "%c %d %d %d %d %d %d\n", | |
220 | frame_type, param->stats.quant, param->stats.kblks, | |
221 | param->stats.mblks, param->stats.ublks, | |
222 | param->stats.length, param->stats.hlength); | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | /** | |
228 | * Dispatch function for our custom plugin. | |
229 | * This handles the dispatch for the Xvid plugin. It passes data | |
230 | * on to other functions for actual processing. | |
231 | * | |
232 | * @param ref Context pointer for the plugin | |
233 | * @param cmd The task given for us to complete | |
234 | * @param p1 First parameter (varies) | |
235 | * @param p2 Second parameter (varies) | |
236 | * @return Returns XVID_ERR_xxxx on failure, or 0 on success | |
237 | */ | |
238 | static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) | |
239 | { | |
240 | switch (cmd) { | |
241 | case XVID_PLG_INFO: | |
242 | case XVID_PLG_FRAME: | |
243 | return 0; | |
244 | case XVID_PLG_BEFORE: | |
245 | return xvid_ff_2pass_before(ref, p1); | |
246 | case XVID_PLG_CREATE: | |
247 | return xvid_ff_2pass_create(p1, p2); | |
248 | case XVID_PLG_AFTER: | |
249 | return xvid_ff_2pass_after(ref, p1); | |
250 | case XVID_PLG_DESTROY: | |
251 | return xvid_ff_2pass_destroy(ref, p1); | |
252 | default: | |
253 | return XVID_ERR_FAIL; | |
254 | } | |
255 | } | |
256 | ||
257 | /** | |
258 | * Routine to create a global VO/VOL header for MP4 container. | |
259 | * What we do here is extract the header from the Xvid bitstream | |
260 | * as it is encoded. We also strip the repeated headers from the | |
261 | * bitstream when a global header is requested for MPEG-4 ISO | |
262 | * compliance. | |
263 | * | |
264 | * @param avctx AVCodecContext pointer to context | |
265 | * @param frame Pointer to encoded frame data | |
266 | * @param header_len Length of header to search | |
267 | * @param frame_len Length of encoded frame data | |
268 | * @return Returns new length of frame data | |
269 | */ | |
270 | static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt, | |
271 | unsigned int header_len, | |
272 | unsigned int frame_len) | |
273 | { | |
274 | int vo_len = 0, i; | |
275 | ||
276 | for (i = 0; i < header_len - 3; i++) { | |
277 | if (pkt->data[i] == 0x00 && | |
278 | pkt->data[i + 1] == 0x00 && | |
279 | pkt->data[i + 2] == 0x01 && | |
280 | pkt->data[i + 3] == 0xB6) { | |
281 | vo_len = i; | |
282 | break; | |
283 | } | |
284 | } | |
285 | ||
286 | if (vo_len > 0) { | |
287 | /* We need to store the header, so extract it */ | |
288 | if (!avctx->extradata) { | |
289 | avctx->extradata = av_malloc(vo_len); | |
290 | memcpy(avctx->extradata, pkt->data, vo_len); | |
291 | avctx->extradata_size = vo_len; | |
292 | } | |
293 | /* Less dangerous now, memmove properly copies the two | |
294 | * chunks of overlapping data */ | |
295 | memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len); | |
296 | pkt->size = frame_len - vo_len; | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
301 | /** | |
302 | * Routine to correct a possibly erroneous framerate being fed to us. | |
303 | * Xvid currently chokes on framerates where the ticks per frame is | |
304 | * extremely large. This function works to correct problems in this area | |
305 | * by estimating a new framerate and taking the simpler fraction of | |
306 | * the two presented. | |
307 | * | |
308 | * @param avctx Context that contains the framerate to correct. | |
309 | */ | |
310 | static void xvid_correct_framerate(AVCodecContext *avctx) | |
311 | { | |
312 | int frate, fbase; | |
313 | int est_frate, est_fbase; | |
314 | int gcd; | |
315 | float est_fps, fps; | |
316 | ||
317 | frate = avctx->time_base.den; | |
318 | fbase = avctx->time_base.num; | |
319 | ||
320 | gcd = av_gcd(frate, fbase); | |
321 | if (gcd > 1) { | |
322 | frate /= gcd; | |
323 | fbase /= gcd; | |
324 | } | |
325 | ||
326 | if (frate <= 65000 && fbase <= 65000) { | |
327 | avctx->time_base.den = frate; | |
328 | avctx->time_base.num = fbase; | |
329 | return; | |
330 | } | |
331 | ||
332 | fps = (float) frate / (float) fbase; | |
333 | est_fps = roundf(fps * 1000.0) / 1000.0; | |
334 | ||
335 | est_frate = (int) est_fps; | |
336 | if (est_fps > (int) est_fps) { | |
337 | est_frate = (est_frate + 1) * 1000; | |
338 | est_fbase = (int) roundf((float) est_frate / est_fps); | |
339 | } else | |
340 | est_fbase = 1; | |
341 | ||
342 | gcd = av_gcd(est_frate, est_fbase); | |
343 | if (gcd > 1) { | |
344 | est_frate /= gcd; | |
345 | est_fbase /= gcd; | |
346 | } | |
347 | ||
348 | if (fbase > est_fbase) { | |
349 | avctx->time_base.den = est_frate; | |
350 | avctx->time_base.num = est_fbase; | |
351 | av_log(avctx, AV_LOG_DEBUG, | |
352 | "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n", | |
353 | est_fps, (((est_fps - fps) / fps) * 100.0)); | |
354 | } else { | |
355 | avctx->time_base.den = frate; | |
356 | avctx->time_base.num = fbase; | |
357 | } | |
358 | } | |
359 | ||
360 | static av_cold int xvid_encode_init(AVCodecContext *avctx) | |
361 | { | |
f6fa7814 | 362 | int xerr, i, ret = -1; |
2ba45a60 DM |
363 | int xvid_flags = avctx->flags; |
364 | struct xvid_context *x = avctx->priv_data; | |
365 | uint16_t *intra, *inter; | |
366 | int fd; | |
367 | ||
368 | xvid_plugin_single_t single = { 0 }; | |
369 | struct xvid_ff_pass1 rc2pass1 = { 0 }; | |
370 | xvid_plugin_2pass2_t rc2pass2 = { 0 }; | |
371 | xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */ | |
372 | xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */ | |
373 | xvid_plugin_ssim_t ssim = { 0 }; | |
374 | xvid_gbl_init_t xvid_gbl_init = { 0 }; | |
375 | xvid_enc_create_t xvid_enc_create = { 0 }; | |
376 | xvid_enc_plugin_t plugins[4]; | |
377 | ||
378 | x->twopassfd = -1; | |
379 | ||
380 | /* Bring in VOP flags from ffmpeg command-line */ | |
381 | x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */ | |
382 | if (xvid_flags & CODEC_FLAG_4MV) | |
383 | x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */ | |
384 | if (avctx->trellis) | |
385 | x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */ | |
386 | if (xvid_flags & CODEC_FLAG_AC_PRED) | |
387 | x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */ | |
388 | if (xvid_flags & CODEC_FLAG_GRAY) | |
389 | x->vop_flags |= XVID_VOP_GREYSCALE; | |
390 | ||
391 | /* Decide which ME quality setting to use */ | |
392 | x->me_flags = 0; | |
393 | switch (avctx->me_method) { | |
394 | case ME_FULL: /* Quality 6 */ | |
395 | x->me_flags |= XVID_ME_EXTSEARCH16 | | |
396 | XVID_ME_EXTSEARCH8; | |
397 | ||
398 | case ME_EPZS: /* Quality 4 */ | |
399 | x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 | | |
400 | XVID_ME_HALFPELREFINE8 | | |
401 | XVID_ME_CHROMA_PVOP | | |
402 | XVID_ME_CHROMA_BVOP; | |
403 | ||
404 | case ME_LOG: /* Quality 2 */ | |
405 | case ME_PHODS: | |
406 | case ME_X1: | |
407 | x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 | | |
408 | XVID_ME_HALFPELREFINE16; | |
409 | ||
410 | case ME_ZERO: /* Quality 0 */ | |
411 | default: | |
412 | break; | |
413 | } | |
414 | ||
415 | /* Decide how we should decide blocks */ | |
416 | switch (avctx->mb_decision) { | |
417 | case 2: | |
418 | x->vop_flags |= XVID_VOP_MODEDECISION_RD; | |
419 | x->me_flags |= XVID_ME_HALFPELREFINE8_RD | | |
420 | XVID_ME_QUARTERPELREFINE8_RD | | |
421 | XVID_ME_EXTSEARCH_RD | | |
422 | XVID_ME_CHECKPREDICTION_RD; | |
423 | case 1: | |
424 | if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD)) | |
425 | x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD; | |
426 | x->me_flags |= XVID_ME_HALFPELREFINE16_RD | | |
427 | XVID_ME_QUARTERPELREFINE16_RD; | |
428 | default: | |
429 | break; | |
430 | } | |
431 | ||
432 | /* Bring in VOL flags from ffmpeg command-line */ | |
433 | #if FF_API_GMC | |
434 | if (avctx->flags & CODEC_FLAG_GMC) | |
435 | x->gmc = 1; | |
436 | #endif | |
437 | ||
438 | x->vol_flags = 0; | |
439 | if (x->gmc) { | |
440 | x->vol_flags |= XVID_VOL_GMC; | |
441 | x->me_flags |= XVID_ME_GME_REFINE; | |
442 | } | |
443 | if (xvid_flags & CODEC_FLAG_QPEL) { | |
444 | x->vol_flags |= XVID_VOL_QUARTERPEL; | |
445 | x->me_flags |= XVID_ME_QUARTERPELREFINE16; | |
446 | if (x->vop_flags & XVID_VOP_INTER4V) | |
447 | x->me_flags |= XVID_ME_QUARTERPELREFINE8; | |
448 | } | |
449 | ||
450 | xvid_gbl_init.version = XVID_VERSION; | |
451 | xvid_gbl_init.debug = 0; | |
452 | xvid_gbl_init.cpu_flags = 0; | |
453 | ||
454 | /* Initialize */ | |
455 | xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL); | |
456 | ||
457 | /* Create the encoder reference */ | |
458 | xvid_enc_create.version = XVID_VERSION; | |
459 | ||
460 | /* Store the desired frame size */ | |
461 | xvid_enc_create.width = | |
462 | x->xsize = avctx->width; | |
463 | xvid_enc_create.height = | |
464 | x->ysize = avctx->height; | |
465 | ||
466 | /* Xvid can determine the proper profile to use */ | |
467 | /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */ | |
468 | ||
469 | /* We don't use zones */ | |
470 | xvid_enc_create.zones = NULL; | |
471 | xvid_enc_create.num_zones = 0; | |
472 | ||
473 | xvid_enc_create.num_threads = avctx->thread_count; | |
474 | ||
475 | xvid_enc_create.plugins = plugins; | |
476 | xvid_enc_create.num_plugins = 0; | |
477 | ||
478 | /* Initialize Buffers */ | |
479 | x->twopassbuffer = NULL; | |
480 | x->old_twopassbuffer = NULL; | |
481 | x->twopassfile = NULL; | |
482 | ||
483 | if (xvid_flags & CODEC_FLAG_PASS1) { | |
484 | rc2pass1.version = XVID_VERSION; | |
485 | rc2pass1.context = x; | |
486 | x->twopassbuffer = av_malloc(BUFFER_SIZE); | |
487 | x->old_twopassbuffer = av_malloc(BUFFER_SIZE); | |
488 | if (!x->twopassbuffer || !x->old_twopassbuffer) { | |
489 | av_log(avctx, AV_LOG_ERROR, | |
490 | "Xvid: Cannot allocate 2-pass log buffers\n"); | |
f6fa7814 | 491 | ret = AVERROR(ENOMEM); |
2ba45a60 DM |
492 | goto fail; |
493 | } | |
494 | x->twopassbuffer[0] = | |
495 | x->old_twopassbuffer[0] = 0; | |
496 | ||
497 | plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass; | |
498 | plugins[xvid_enc_create.num_plugins].param = &rc2pass1; | |
499 | xvid_enc_create.num_plugins++; | |
500 | } else if (xvid_flags & CODEC_FLAG_PASS2) { | |
501 | rc2pass2.version = XVID_VERSION; | |
502 | rc2pass2.bitrate = avctx->bit_rate; | |
503 | ||
504 | fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx); | |
f6fa7814 | 505 | if (fd < 0) { |
2ba45a60 | 506 | av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n"); |
f6fa7814 | 507 | ret = fd; |
2ba45a60 DM |
508 | goto fail; |
509 | } | |
510 | x->twopassfd = fd; | |
511 | ||
512 | if (!avctx->stats_in) { | |
513 | av_log(avctx, AV_LOG_ERROR, | |
514 | "Xvid: No 2-pass information loaded for second pass\n"); | |
f6fa7814 | 515 | ret = AVERROR(EINVAL); |
2ba45a60 DM |
516 | goto fail; |
517 | } | |
518 | ||
f6fa7814 DM |
519 | ret = write(fd, avctx->stats_in, strlen(avctx->stats_in)); |
520 | if (ret == -1) | |
521 | ret = AVERROR(errno); | |
522 | else if (strlen(avctx->stats_in) > ret) { | |
2ba45a60 | 523 | av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n"); |
f6fa7814 | 524 | ret = AVERROR(EIO); |
2ba45a60 | 525 | } |
f6fa7814 DM |
526 | if (ret < 0) |
527 | goto fail; | |
2ba45a60 DM |
528 | |
529 | rc2pass2.filename = x->twopassfile; | |
530 | plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2; | |
531 | plugins[xvid_enc_create.num_plugins].param = &rc2pass2; | |
532 | xvid_enc_create.num_plugins++; | |
533 | } else if (!(xvid_flags & CODEC_FLAG_QSCALE)) { | |
534 | /* Single Pass Bitrate Control! */ | |
535 | single.version = XVID_VERSION; | |
536 | single.bitrate = avctx->bit_rate; | |
537 | ||
538 | plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single; | |
539 | plugins[xvid_enc_create.num_plugins].param = &single; | |
540 | xvid_enc_create.num_plugins++; | |
541 | } | |
542 | ||
543 | if (avctx->lumi_masking != 0.0) | |
544 | x->lumi_aq = 1; | |
545 | ||
546 | /* Luminance Masking */ | |
547 | if (x->lumi_aq) { | |
548 | masking_l.method = 0; | |
549 | plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; | |
550 | ||
551 | /* The old behavior is that when avctx->lumi_masking is specified, | |
552 | * plugins[...].param = NULL. Trying to keep the old behavior here. */ | |
553 | plugins[xvid_enc_create.num_plugins].param = | |
554 | avctx->lumi_masking ? NULL : &masking_l; | |
555 | xvid_enc_create.num_plugins++; | |
556 | } | |
557 | ||
558 | /* Variance AQ */ | |
559 | if (x->variance_aq) { | |
560 | masking_v.method = 1; | |
561 | plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; | |
562 | plugins[xvid_enc_create.num_plugins].param = &masking_v; | |
563 | xvid_enc_create.num_plugins++; | |
564 | } | |
565 | ||
566 | if (x->lumi_aq && x->variance_aq ) | |
567 | av_log(avctx, AV_LOG_INFO, | |
568 | "Both lumi_aq and variance_aq are enabled. The resulting quality" | |
569 | "will be the worse one of the two effects made by the AQ.\n"); | |
570 | ||
571 | /* SSIM */ | |
572 | if (x->ssim) { | |
573 | plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim; | |
574 | ssim.b_printstat = x->ssim == 2; | |
575 | ssim.acc = x->ssim_acc; | |
576 | ssim.cpu_flags = xvid_gbl_init.cpu_flags; | |
577 | ssim.b_visualize = 0; | |
578 | plugins[xvid_enc_create.num_plugins].param = &ssim; | |
579 | xvid_enc_create.num_plugins++; | |
580 | } | |
581 | ||
582 | /* Frame Rate and Key Frames */ | |
583 | xvid_correct_framerate(avctx); | |
584 | xvid_enc_create.fincr = avctx->time_base.num; | |
585 | xvid_enc_create.fbase = avctx->time_base.den; | |
586 | if (avctx->gop_size > 0) | |
587 | xvid_enc_create.max_key_interval = avctx->gop_size; | |
588 | else | |
589 | xvid_enc_create.max_key_interval = 240; /* Xvid's best default */ | |
590 | ||
591 | /* Quants */ | |
592 | if (xvid_flags & CODEC_FLAG_QSCALE) | |
593 | x->qscale = 1; | |
594 | else | |
595 | x->qscale = 0; | |
596 | ||
597 | xvid_enc_create.min_quant[0] = avctx->qmin; | |
598 | xvid_enc_create.min_quant[1] = avctx->qmin; | |
599 | xvid_enc_create.min_quant[2] = avctx->qmin; | |
600 | xvid_enc_create.max_quant[0] = avctx->qmax; | |
601 | xvid_enc_create.max_quant[1] = avctx->qmax; | |
602 | xvid_enc_create.max_quant[2] = avctx->qmax; | |
603 | ||
604 | /* Quant Matrices */ | |
605 | x->intra_matrix = | |
606 | x->inter_matrix = NULL; | |
607 | if (avctx->mpeg_quant) | |
608 | x->vol_flags |= XVID_VOL_MPEGQUANT; | |
609 | if ((avctx->intra_matrix || avctx->inter_matrix)) { | |
610 | x->vol_flags |= XVID_VOL_MPEGQUANT; | |
611 | ||
612 | if (avctx->intra_matrix) { | |
613 | intra = avctx->intra_matrix; | |
614 | x->intra_matrix = av_malloc(sizeof(unsigned char) * 64); | |
615 | } else | |
616 | intra = NULL; | |
617 | if (avctx->inter_matrix) { | |
618 | inter = avctx->inter_matrix; | |
619 | x->inter_matrix = av_malloc(sizeof(unsigned char) * 64); | |
620 | } else | |
621 | inter = NULL; | |
622 | ||
623 | for (i = 0; i < 64; i++) { | |
624 | if (intra) | |
625 | x->intra_matrix[i] = (unsigned char) intra[i]; | |
626 | if (inter) | |
627 | x->inter_matrix[i] = (unsigned char) inter[i]; | |
628 | } | |
629 | } | |
630 | ||
631 | /* Misc Settings */ | |
632 | xvid_enc_create.frame_drop_ratio = 0; | |
633 | xvid_enc_create.global = 0; | |
634 | if (xvid_flags & CODEC_FLAG_CLOSED_GOP) | |
635 | xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP; | |
636 | ||
637 | /* Determines which codec mode we are operating in */ | |
638 | avctx->extradata = NULL; | |
639 | avctx->extradata_size = 0; | |
640 | if (xvid_flags & CODEC_FLAG_GLOBAL_HEADER) { | |
641 | /* In this case, we are claiming to be MPEG4 */ | |
642 | x->quicktime_format = 1; | |
643 | avctx->codec_id = AV_CODEC_ID_MPEG4; | |
644 | } else { | |
645 | /* We are claiming to be Xvid */ | |
646 | x->quicktime_format = 0; | |
647 | if (!avctx->codec_tag) | |
648 | avctx->codec_tag = AV_RL32("xvid"); | |
649 | } | |
650 | ||
651 | /* Bframes */ | |
652 | xvid_enc_create.max_bframes = avctx->max_b_frames; | |
653 | xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset; | |
654 | xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor; | |
655 | if (avctx->max_b_frames > 0 && !x->quicktime_format) | |
656 | xvid_enc_create.global |= XVID_GLOBAL_PACKED; | |
657 | ||
658 | av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins)); | |
659 | ||
660 | /* Create encoder context */ | |
661 | xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL); | |
662 | if (xerr) { | |
663 | av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n"); | |
664 | goto fail; | |
665 | } | |
666 | ||
667 | x->encoder_handle = xvid_enc_create.handle; | |
668 | avctx->coded_frame = av_frame_alloc(); | |
f6fa7814 DM |
669 | if (!avctx->coded_frame) { |
670 | ret = AVERROR(ENOMEM); | |
671 | goto fail; | |
672 | } | |
2ba45a60 DM |
673 | |
674 | return 0; | |
675 | fail: | |
676 | xvid_encode_close(avctx); | |
f6fa7814 | 677 | return ret; |
2ba45a60 DM |
678 | } |
679 | ||
680 | static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
681 | const AVFrame *picture, int *got_packet) | |
682 | { | |
683 | int xerr, i, ret, user_packet = !!pkt->data; | |
684 | struct xvid_context *x = avctx->priv_data; | |
685 | AVFrame *p = avctx->coded_frame; | |
686 | int mb_width = (avctx->width + 15) / 16; | |
687 | int mb_height = (avctx->height + 15) / 16; | |
688 | char *tmp; | |
689 | ||
690 | xvid_enc_frame_t xvid_enc_frame = { 0 }; | |
691 | xvid_enc_stats_t xvid_enc_stats = { 0 }; | |
692 | ||
693 | if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0) | |
694 | return ret; | |
695 | ||
696 | /* Start setting up the frame */ | |
697 | xvid_enc_frame.version = XVID_VERSION; | |
698 | xvid_enc_stats.version = XVID_VERSION; | |
699 | ||
700 | /* Let Xvid know where to put the frame. */ | |
701 | xvid_enc_frame.bitstream = pkt->data; | |
702 | xvid_enc_frame.length = pkt->size; | |
703 | ||
704 | /* Initialize input image fields */ | |
705 | if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) { | |
706 | av_log(avctx, AV_LOG_ERROR, | |
707 | "Xvid: Color spaces other than 420P not supported\n"); | |
708 | return AVERROR(EINVAL); | |
709 | } | |
710 | ||
711 | xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */ | |
712 | ||
713 | for (i = 0; i < 4; i++) { | |
714 | xvid_enc_frame.input.plane[i] = picture->data[i]; | |
715 | xvid_enc_frame.input.stride[i] = picture->linesize[i]; | |
716 | } | |
717 | ||
718 | /* Encoder Flags */ | |
719 | xvid_enc_frame.vop_flags = x->vop_flags; | |
720 | xvid_enc_frame.vol_flags = x->vol_flags; | |
721 | xvid_enc_frame.motion = x->me_flags; | |
722 | xvid_enc_frame.type = | |
723 | picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP : | |
724 | picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP : | |
725 | picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP : | |
726 | XVID_TYPE_AUTO; | |
727 | ||
728 | /* Pixel aspect ratio setting */ | |
729 | if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 || | |
730 | avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) { | |
731 | av_log(avctx, AV_LOG_WARNING, | |
732 | "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n", | |
733 | avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den); | |
734 | av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den, | |
735 | avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255); | |
736 | } | |
737 | xvid_enc_frame.par = XVID_PAR_EXT; | |
738 | xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num; | |
739 | xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den; | |
740 | ||
741 | /* Quant Setting */ | |
742 | if (x->qscale) | |
743 | xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA; | |
744 | else | |
745 | xvid_enc_frame.quant = 0; | |
746 | ||
747 | /* Matrices */ | |
748 | xvid_enc_frame.quant_intra_matrix = x->intra_matrix; | |
749 | xvid_enc_frame.quant_inter_matrix = x->inter_matrix; | |
750 | ||
751 | /* Encode */ | |
752 | xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE, | |
753 | &xvid_enc_frame, &xvid_enc_stats); | |
754 | ||
755 | /* Two-pass log buffer swapping */ | |
756 | avctx->stats_out = NULL; | |
757 | if (x->twopassbuffer) { | |
758 | tmp = x->old_twopassbuffer; | |
759 | x->old_twopassbuffer = x->twopassbuffer; | |
760 | x->twopassbuffer = tmp; | |
761 | x->twopassbuffer[0] = 0; | |
762 | if (x->old_twopassbuffer[0] != 0) { | |
763 | avctx->stats_out = x->old_twopassbuffer; | |
764 | } | |
765 | } | |
766 | ||
767 | if (xerr > 0) { | |
768 | *got_packet = 1; | |
769 | ||
770 | p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA; | |
771 | if (xvid_enc_stats.type == XVID_TYPE_PVOP) | |
772 | p->pict_type = AV_PICTURE_TYPE_P; | |
773 | else if (xvid_enc_stats.type == XVID_TYPE_BVOP) | |
774 | p->pict_type = AV_PICTURE_TYPE_B; | |
775 | else if (xvid_enc_stats.type == XVID_TYPE_SVOP) | |
776 | p->pict_type = AV_PICTURE_TYPE_S; | |
777 | else | |
778 | p->pict_type = AV_PICTURE_TYPE_I; | |
779 | if (xvid_enc_frame.out_flags & XVID_KEYFRAME) { | |
780 | p->key_frame = 1; | |
781 | pkt->flags |= AV_PKT_FLAG_KEY; | |
782 | if (x->quicktime_format) | |
783 | return xvid_strip_vol_header(avctx, pkt, | |
784 | xvid_enc_stats.hlength, xerr); | |
785 | } else | |
786 | p->key_frame = 0; | |
787 | ||
788 | pkt->size = xerr; | |
789 | ||
790 | return 0; | |
791 | } else { | |
792 | if (!user_packet) | |
793 | av_free_packet(pkt); | |
794 | if (!xerr) | |
795 | return 0; | |
796 | av_log(avctx, AV_LOG_ERROR, | |
797 | "Xvid: Encoding Error Occurred: %i\n", xerr); | |
798 | return AVERROR_EXTERNAL; | |
799 | } | |
800 | } | |
801 | ||
802 | static av_cold int xvid_encode_close(AVCodecContext *avctx) | |
803 | { | |
804 | struct xvid_context *x = avctx->priv_data; | |
805 | ||
806 | if(x->encoder_handle) | |
807 | xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL); | |
808 | x->encoder_handle = NULL; | |
809 | ||
810 | av_freep(&avctx->extradata); | |
811 | if (x->twopassbuffer) { | |
812 | av_freep(&x->twopassbuffer); | |
813 | av_freep(&x->old_twopassbuffer); | |
814 | avctx->stats_out = NULL; | |
815 | } | |
816 | if (x->twopassfd>=0) { | |
817 | unlink(x->twopassfile); | |
818 | close(x->twopassfd); | |
819 | x->twopassfd = -1; | |
820 | } | |
821 | av_freep(&x->twopassfile); | |
822 | av_freep(&x->intra_matrix); | |
823 | av_freep(&x->inter_matrix); | |
f6fa7814 | 824 | av_frame_free(&avctx->coded_frame); |
2ba45a60 DM |
825 | |
826 | return 0; | |
827 | } | |
828 | ||
829 | #define OFFSET(x) offsetof(struct xvid_context, x) | |
830 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | |
831 | static const AVOption options[] = { | |
832 | { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
833 | { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
834 | { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" }, | |
835 | { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" }, | |
836 | { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" }, | |
837 | { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" }, | |
838 | { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE }, | |
839 | { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
840 | { NULL }, | |
841 | }; | |
842 | ||
843 | static const AVClass xvid_class = { | |
844 | .class_name = "libxvid", | |
845 | .item_name = av_default_item_name, | |
846 | .option = options, | |
847 | .version = LIBAVUTIL_VERSION_INT, | |
848 | }; | |
849 | ||
850 | AVCodec ff_libxvid_encoder = { | |
851 | .name = "libxvid", | |
852 | .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"), | |
853 | .type = AVMEDIA_TYPE_VIDEO, | |
854 | .id = AV_CODEC_ID_MPEG4, | |
855 | .priv_data_size = sizeof(struct xvid_context), | |
856 | .init = xvid_encode_init, | |
857 | .encode2 = xvid_encode_frame, | |
858 | .close = xvid_encode_close, | |
859 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, | |
860 | .priv_class = &xvid_class, | |
861 | }; |