2 * Interface to xvidcore for mpeg4 encoding
3 * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
5 * This file is part of FFmpeg.
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.
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.
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
24 * Interface to xvidcore for MPEG-4 compliant encoding.
25 * @author Adam Thayer (krevnik@comcast.net)
32 #include "libavutil/avassert.h"
33 #include "libavutil/cpu.h"
34 #include "libavutil/file.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/intreadwrite.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/mem.h"
39 #include "libavutil/opt.h"
44 #include "mpegutils.h"
55 * Buffer management macros.
57 #define BUFFER_SIZE 1024
58 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
59 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
62 * Structure for the private Xvid context.
63 * This stores all the private context for the codec.
67 void *encoder_handle; /**< Handle for Xvid encoder */
68 int xsize; /**< Frame x size */
69 int ysize; /**< Frame y size */
70 int vop_flags; /**< VOP flags for Xvid encoder */
71 int vol_flags; /**< VOL flags for Xvid encoder */
72 int me_flags; /**< Motion Estimation flags */
73 int qscale; /**< Do we use constant scale? */
74 int quicktime_format; /**< Are we in a QT-based format? */
75 char *twopassbuffer; /**< Character buffer for two-pass */
76 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
77 char *twopassfile; /**< second pass temp file name */
79 unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
80 unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
81 int lumi_aq; /**< Lumi masking as an aq method */
82 int variance_aq; /**< Variance adaptive quantization */
83 int ssim; /**< SSIM information display mode */
84 int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
86 int me_quality; /**< Motion estimation quality. 0: fast 6: best. */
90 * Structure for the private first-pass plugin.
92 struct xvid_ff_pass1 {
93 int version; /**< Xvid version */
94 struct xvid_context *context; /**< Pointer to private context */
97 static int xvid_encode_close(AVCodecContext *avctx);
100 * Xvid 2-Pass Kludge Section
102 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
103 * this section spends time replacing the first pass plugin so we can write
104 * statistic information as libavcodec requests in. We have another kludge
105 * that allows us to pass data to the second pass in Xvid without a custom
106 * rate-control plugin.
110 * Initialize the two-pass plugin and context.
112 * @param param Input construction parameter structure
113 * @param handle Private context handle
114 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
116 static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
118 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param;
119 char *log = x->context->twopassbuffer;
121 /* Do a quick bounds check */
123 return XVID_ERR_FAIL;
125 /* We use snprintf() */
126 /* This is because we can safely prevent a buffer overflow */
128 snprintf(log, BUFFER_REMAINING(log),
129 "# ffmpeg 2-pass log file, using xvid codec\n");
130 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
131 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
132 XVID_VERSION_MAJOR(XVID_VERSION),
133 XVID_VERSION_MINOR(XVID_VERSION),
134 XVID_VERSION_PATCH(XVID_VERSION));
136 *handle = x->context;
141 * Destroy the two-pass plugin context.
143 * @param ref Context pointer for the plugin
144 * @param param Destrooy context
145 * @return Returns 0, success guaranteed
147 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
148 xvid_plg_destroy_t *param)
150 /* Currently cannot think of anything to do on destruction */
151 /* Still, the framework should be here for reference/use */
152 if (ref->twopassbuffer)
153 ref->twopassbuffer[0] = 0;
158 * Enable fast encode mode during the first pass.
160 * @param ref Context pointer for the plugin
161 * @param param Frame data
162 * @return Returns 0, success guaranteed
164 static int xvid_ff_2pass_before(struct xvid_context *ref,
165 xvid_plg_data_t *param)
168 int motion_replacements;
171 /* Nothing to do here, result is changed too much */
172 if (param->zone && param->zone->mode == XVID_ZONE_QUANT)
175 /* We can implement a 'turbo' first pass mode here */
179 motion_remove = ~XVID_ME_CHROMA_PVOP &
180 ~XVID_ME_CHROMA_BVOP &
181 ~XVID_ME_EXTSEARCH16 &
182 ~XVID_ME_ADVANCEDDIAMOND16;
183 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
184 XVID_ME_SKIP_DELTASEARCH |
185 XVID_ME_FASTREFINE16 |
186 XVID_ME_BFRAME_EARLYSTOP;
187 vop_remove = ~XVID_VOP_MODEDECISION_RD &
188 ~XVID_VOP_FAST_MODEDECISION_RD &
189 ~XVID_VOP_TRELLISQUANT &
193 param->vol_flags &= ~XVID_VOL_GMC;
194 param->vop_flags &= vop_remove;
195 param->motion_flags &= motion_remove;
196 param->motion_flags |= motion_replacements;
202 * Capture statistic data and write it during first pass.
204 * @param ref Context pointer for the plugin
205 * @param param Statistic data
206 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
208 static int xvid_ff_2pass_after(struct xvid_context *ref,
209 xvid_plg_data_t *param)
211 char *log = ref->twopassbuffer;
212 const char *frame_types = " ipbs";
215 /* Quick bounds check */
217 return XVID_ERR_FAIL;
219 /* Convert the type given to us into a character */
220 if (param->type < 5 && param->type > 0)
221 frame_type = frame_types[param->type];
223 return XVID_ERR_FAIL;
225 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
226 "%c %d %d %d %d %d %d\n",
227 frame_type, param->stats.quant, param->stats.kblks,
228 param->stats.mblks, param->stats.ublks,
229 param->stats.length, param->stats.hlength);
235 * Dispatch function for our custom plugin.
236 * This handles the dispatch for the Xvid plugin. It passes data
237 * on to other functions for actual processing.
239 * @param ref Context pointer for the plugin
240 * @param cmd The task given for us to complete
241 * @param p1 First parameter (varies)
242 * @param p2 Second parameter (varies)
243 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
245 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
251 case XVID_PLG_BEFORE:
252 return xvid_ff_2pass_before(ref, p1);
253 case XVID_PLG_CREATE:
254 return xvid_ff_2pass_create(p1, p2);
256 return xvid_ff_2pass_after(ref, p1);
257 case XVID_PLG_DESTROY:
258 return xvid_ff_2pass_destroy(ref, p1);
260 return XVID_ERR_FAIL;
265 * Routine to create a global VO/VOL header for MP4 container.
266 * What we do here is extract the header from the Xvid bitstream
267 * as it is encoded. We also strip the repeated headers from the
268 * bitstream when a global header is requested for MPEG-4 ISO
271 * @param avctx AVCodecContext pointer to context
272 * @param frame Pointer to encoded frame data
273 * @param header_len Length of header to search
274 * @param frame_len Length of encoded frame data
275 * @return Returns new length of frame data
277 static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt,
278 unsigned int header_len,
279 unsigned int frame_len)
283 for (i = 0; i < header_len - 3; i++) {
284 if (pkt->data[i] == 0x00 &&
285 pkt->data[i + 1] == 0x00 &&
286 pkt->data[i + 2] == 0x01 &&
287 pkt->data[i + 3] == 0xB6) {
294 /* We need to store the header, so extract it */
295 if (!avctx->extradata) {
296 avctx->extradata = av_malloc(vo_len);
297 if (!avctx->extradata)
298 return AVERROR(ENOMEM);
299 memcpy(avctx->extradata, pkt->data, vo_len);
300 avctx->extradata_size = vo_len;
302 /* Less dangerous now, memmove properly copies the two
303 * chunks of overlapping data */
304 memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
305 pkt->size = frame_len - vo_len;
311 * Routine to correct a possibly erroneous framerate being fed to us.
312 * Xvid currently chokes on framerates where the ticks per frame is
313 * extremely large. This function works to correct problems in this area
314 * by estimating a new framerate and taking the simpler fraction of
317 * @param avctx Context that contains the framerate to correct.
319 static void xvid_correct_framerate(AVCodecContext *avctx)
322 int est_frate, est_fbase;
326 frate = avctx->time_base.den;
327 fbase = avctx->time_base.num;
329 gcd = av_gcd(frate, fbase);
335 if (frate <= 65000 && fbase <= 65000) {
336 avctx->time_base.den = frate;
337 avctx->time_base.num = fbase;
341 fps = (float) frate / (float) fbase;
342 est_fps = roundf(fps * 1000.0) / 1000.0;
344 est_frate = (int) est_fps;
345 if (est_fps > (int) est_fps) {
346 est_frate = (est_frate + 1) * 1000;
347 est_fbase = (int) roundf((float) est_frate / est_fps);
351 gcd = av_gcd(est_frate, est_fbase);
357 if (fbase > est_fbase) {
358 avctx->time_base.den = est_frate;
359 avctx->time_base.num = est_fbase;
360 av_log(avctx, AV_LOG_DEBUG,
361 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
362 est_fps, (((est_fps - fps) / fps) * 100.0));
364 avctx->time_base.den = frate;
365 avctx->time_base.num = fbase;
369 static av_cold int xvid_encode_init(AVCodecContext *avctx)
371 int xerr, i, ret = -1;
372 int xvid_flags = avctx->flags;
373 struct xvid_context *x = avctx->priv_data;
374 uint16_t *intra, *inter;
377 xvid_plugin_single_t single = { 0 };
378 struct xvid_ff_pass1 rc2pass1 = { 0 };
379 xvid_plugin_2pass2_t rc2pass2 = { 0 };
380 xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
381 xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
382 xvid_plugin_ssim_t ssim = { 0 };
383 xvid_gbl_init_t xvid_gbl_init = { 0 };
384 xvid_enc_create_t xvid_enc_create = { 0 };
385 xvid_enc_plugin_t plugins[4];
389 /* Bring in VOP flags from ffmpeg command-line */
390 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
391 if (xvid_flags & AV_CODEC_FLAG_4MV)
392 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
394 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
395 if (xvid_flags & AV_CODEC_FLAG_AC_PRED)
396 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
397 if (xvid_flags & AV_CODEC_FLAG_GRAY)
398 x->vop_flags |= XVID_VOP_GREYSCALE;
400 /* Decide which ME quality setting to use */
402 switch (x->me_quality) {
405 x->me_flags |= XVID_ME_EXTSEARCH16 |
409 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
410 XVID_ME_HALFPELREFINE8 |
411 XVID_ME_CHROMA_PVOP |
415 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
416 XVID_ME_HALFPELREFINE16;
417 #if FF_API_MOTION_EST
418 FF_DISABLE_DEPRECATION_WARNINGS
421 switch (avctx->me_method) {
422 case ME_FULL: /* Quality 6 */
423 x->me_flags |= XVID_ME_EXTSEARCH16 |
425 case ME_EPZS: /* Quality 4 */
426 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
427 XVID_ME_HALFPELREFINE8 |
428 XVID_ME_CHROMA_PVOP |
430 case ME_LOG: /* Quality 2 */
433 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
434 XVID_ME_HALFPELREFINE16;
435 case ME_ZERO: /* Quality 0 */
439 FF_ENABLE_DEPRECATION_WARNINGS
443 /* Decide how we should decide blocks */
444 switch (avctx->mb_decision) {
446 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
447 x->me_flags |= XVID_ME_HALFPELREFINE8_RD |
448 XVID_ME_QUARTERPELREFINE8_RD |
449 XVID_ME_EXTSEARCH_RD |
450 XVID_ME_CHECKPREDICTION_RD;
452 if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD))
453 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
454 x->me_flags |= XVID_ME_HALFPELREFINE16_RD |
455 XVID_ME_QUARTERPELREFINE16_RD;
460 /* Bring in VOL flags from ffmpeg command-line */
462 if (avctx->flags & CODEC_FLAG_GMC)
468 x->vol_flags |= XVID_VOL_GMC;
469 x->me_flags |= XVID_ME_GME_REFINE;
471 if (xvid_flags & AV_CODEC_FLAG_QPEL) {
472 x->vol_flags |= XVID_VOL_QUARTERPEL;
473 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
474 if (x->vop_flags & XVID_VOP_INTER4V)
475 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
478 xvid_gbl_init.version = XVID_VERSION;
479 xvid_gbl_init.debug = 0;
480 xvid_gbl_init.cpu_flags = 0;
483 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
485 /* Create the encoder reference */
486 xvid_enc_create.version = XVID_VERSION;
488 /* Store the desired frame size */
489 xvid_enc_create.width =
490 x->xsize = avctx->width;
491 xvid_enc_create.height =
492 x->ysize = avctx->height;
494 /* Xvid can determine the proper profile to use */
495 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
497 /* We don't use zones */
498 xvid_enc_create.zones = NULL;
499 xvid_enc_create.num_zones = 0;
501 xvid_enc_create.num_threads = avctx->thread_count;
502 #if (XVID_VERSION <= 0x010303) && (XVID_VERSION >= 0x010300)
503 /* workaround for a bug in libxvidcore */
504 if (avctx->height <= 16) {
505 if (avctx->thread_count < 2) {
506 xvid_enc_create.num_threads = 0;
508 av_log(avctx, AV_LOG_ERROR,
509 "Too small height for threads > 1.");
510 return AVERROR(EINVAL);
515 xvid_enc_create.plugins = plugins;
516 xvid_enc_create.num_plugins = 0;
518 /* Initialize Buffers */
519 x->twopassbuffer = NULL;
520 x->old_twopassbuffer = NULL;
521 x->twopassfile = NULL;
523 if (xvid_flags & AV_CODEC_FLAG_PASS1) {
524 rc2pass1.version = XVID_VERSION;
525 rc2pass1.context = x;
526 x->twopassbuffer = av_malloc(BUFFER_SIZE);
527 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
528 if (!x->twopassbuffer || !x->old_twopassbuffer) {
529 av_log(avctx, AV_LOG_ERROR,
530 "Xvid: Cannot allocate 2-pass log buffers\n");
531 return AVERROR(ENOMEM);
533 x->twopassbuffer[0] =
534 x->old_twopassbuffer[0] = 0;
536 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
537 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
538 xvid_enc_create.num_plugins++;
539 } else if (xvid_flags & AV_CODEC_FLAG_PASS2) {
540 rc2pass2.version = XVID_VERSION;
541 rc2pass2.bitrate = avctx->bit_rate;
543 fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx);
545 av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n");
550 if (!avctx->stats_in) {
551 av_log(avctx, AV_LOG_ERROR,
552 "Xvid: No 2-pass information loaded for second pass\n");
553 return AVERROR(EINVAL);
556 ret = write(fd, avctx->stats_in, strlen(avctx->stats_in));
558 ret = AVERROR(errno);
559 else if (strlen(avctx->stats_in) > ret) {
560 av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n");
566 rc2pass2.filename = x->twopassfile;
567 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
568 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
569 xvid_enc_create.num_plugins++;
570 } else if (!(xvid_flags & AV_CODEC_FLAG_QSCALE)) {
571 /* Single Pass Bitrate Control! */
572 single.version = XVID_VERSION;
573 single.bitrate = avctx->bit_rate;
575 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
576 plugins[xvid_enc_create.num_plugins].param = &single;
577 xvid_enc_create.num_plugins++;
580 if (avctx->lumi_masking != 0.0)
583 /* Luminance Masking */
585 masking_l.method = 0;
586 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
588 /* The old behavior is that when avctx->lumi_masking is specified,
589 * plugins[...].param = NULL. Trying to keep the old behavior here. */
590 plugins[xvid_enc_create.num_plugins].param =
591 avctx->lumi_masking ? NULL : &masking_l;
592 xvid_enc_create.num_plugins++;
596 if (x->variance_aq) {
597 masking_v.method = 1;
598 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
599 plugins[xvid_enc_create.num_plugins].param = &masking_v;
600 xvid_enc_create.num_plugins++;
603 if (x->lumi_aq && x->variance_aq )
604 av_log(avctx, AV_LOG_INFO,
605 "Both lumi_aq and variance_aq are enabled. The resulting quality"
606 "will be the worse one of the two effects made by the AQ.\n");
610 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
611 ssim.b_printstat = x->ssim == 2;
612 ssim.acc = x->ssim_acc;
613 ssim.cpu_flags = xvid_gbl_init.cpu_flags;
614 ssim.b_visualize = 0;
615 plugins[xvid_enc_create.num_plugins].param = &ssim;
616 xvid_enc_create.num_plugins++;
619 /* Frame Rate and Key Frames */
620 xvid_correct_framerate(avctx);
621 xvid_enc_create.fincr = avctx->time_base.num;
622 xvid_enc_create.fbase = avctx->time_base.den;
623 if (avctx->gop_size > 0)
624 xvid_enc_create.max_key_interval = avctx->gop_size;
626 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
629 if (xvid_flags & AV_CODEC_FLAG_QSCALE)
634 xvid_enc_create.min_quant[0] = avctx->qmin;
635 xvid_enc_create.min_quant[1] = avctx->qmin;
636 xvid_enc_create.min_quant[2] = avctx->qmin;
637 xvid_enc_create.max_quant[0] = avctx->qmax;
638 xvid_enc_create.max_quant[1] = avctx->qmax;
639 xvid_enc_create.max_quant[2] = avctx->qmax;
643 x->inter_matrix = NULL;
644 if (avctx->mpeg_quant)
645 x->vol_flags |= XVID_VOL_MPEGQUANT;
646 if ((avctx->intra_matrix || avctx->inter_matrix)) {
647 x->vol_flags |= XVID_VOL_MPEGQUANT;
649 if (avctx->intra_matrix) {
650 intra = avctx->intra_matrix;
651 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
652 if (!x->intra_matrix)
653 return AVERROR(ENOMEM);
656 if (avctx->inter_matrix) {
657 inter = avctx->inter_matrix;
658 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
659 if (!x->inter_matrix)
660 return AVERROR(ENOMEM);
664 for (i = 0; i < 64; i++) {
666 x->intra_matrix[i] = (unsigned char) intra[i];
668 x->inter_matrix[i] = (unsigned char) inter[i];
673 xvid_enc_create.frame_drop_ratio = 0;
674 xvid_enc_create.global = 0;
675 if (xvid_flags & AV_CODEC_FLAG_CLOSED_GOP)
676 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
678 /* Determines which codec mode we are operating in */
679 avctx->extradata = NULL;
680 avctx->extradata_size = 0;
681 if (xvid_flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
682 /* In this case, we are claiming to be MPEG4 */
683 x->quicktime_format = 1;
684 avctx->codec_id = AV_CODEC_ID_MPEG4;
686 /* We are claiming to be Xvid */
687 x->quicktime_format = 0;
688 if (!avctx->codec_tag)
689 avctx->codec_tag = AV_RL32("xvid");
693 xvid_enc_create.max_bframes = avctx->max_b_frames;
694 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
695 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
696 if (avctx->max_b_frames > 0 && !x->quicktime_format)
697 xvid_enc_create.global |= XVID_GLOBAL_PACKED;
699 av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
701 /* Create encoder context */
702 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
704 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
705 return AVERROR_EXTERNAL;
708 x->encoder_handle = xvid_enc_create.handle;
713 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
714 const AVFrame *picture, int *got_packet)
716 int xerr, i, ret, user_packet = !!pkt->data;
717 struct xvid_context *x = avctx->priv_data;
718 int mb_width = (avctx->width + 15) / 16;
719 int mb_height = (avctx->height + 15) / 16;
722 xvid_enc_frame_t xvid_enc_frame = { 0 };
723 xvid_enc_stats_t xvid_enc_stats = { 0 };
725 if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
728 /* Start setting up the frame */
729 xvid_enc_frame.version = XVID_VERSION;
730 xvid_enc_stats.version = XVID_VERSION;
732 /* Let Xvid know where to put the frame. */
733 xvid_enc_frame.bitstream = pkt->data;
734 xvid_enc_frame.length = pkt->size;
736 /* Initialize input image fields */
737 if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
738 av_log(avctx, AV_LOG_ERROR,
739 "Xvid: Color spaces other than 420P not supported\n");
740 return AVERROR(EINVAL);
743 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
745 for (i = 0; i < 4; i++) {
746 xvid_enc_frame.input.plane[i] = picture->data[i];
747 xvid_enc_frame.input.stride[i] = picture->linesize[i];
751 xvid_enc_frame.vop_flags = x->vop_flags;
752 xvid_enc_frame.vol_flags = x->vol_flags;
753 xvid_enc_frame.motion = x->me_flags;
754 xvid_enc_frame.type =
755 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
756 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
757 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
760 /* Pixel aspect ratio setting */
761 if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
762 avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
763 av_log(avctx, AV_LOG_WARNING,
764 "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
765 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
766 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
767 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
769 xvid_enc_frame.par = XVID_PAR_EXT;
770 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
771 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
775 xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
777 xvid_enc_frame.quant = 0;
780 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
781 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
784 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
785 &xvid_enc_frame, &xvid_enc_stats);
787 /* Two-pass log buffer swapping */
788 avctx->stats_out = NULL;
789 if (x->twopassbuffer) {
790 tmp = x->old_twopassbuffer;
791 x->old_twopassbuffer = x->twopassbuffer;
792 x->twopassbuffer = tmp;
793 x->twopassbuffer[0] = 0;
794 if (x->old_twopassbuffer[0] != 0) {
795 avctx->stats_out = x->old_twopassbuffer;
804 if (xvid_enc_stats.type == XVID_TYPE_PVOP)
805 pict_type = AV_PICTURE_TYPE_P;
806 else if (xvid_enc_stats.type == XVID_TYPE_BVOP)
807 pict_type = AV_PICTURE_TYPE_B;
808 else if (xvid_enc_stats.type == XVID_TYPE_SVOP)
809 pict_type = AV_PICTURE_TYPE_S;
811 pict_type = AV_PICTURE_TYPE_I;
813 #if FF_API_CODED_FRAME
814 FF_DISABLE_DEPRECATION_WARNINGS
815 avctx->coded_frame->pict_type = pict_type;
816 avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
817 FF_ENABLE_DEPRECATION_WARNINGS
820 ff_side_data_set_encoder_stats(pkt, xvid_enc_stats.quant * FF_QP2LAMBDA, NULL, 0, pict_type);
822 if (xvid_enc_frame.out_flags & XVID_KEYFRAME) {
823 #if FF_API_CODED_FRAME
824 FF_DISABLE_DEPRECATION_WARNINGS
825 avctx->coded_frame->key_frame = 1;
826 FF_ENABLE_DEPRECATION_WARNINGS
828 pkt->flags |= AV_PKT_FLAG_KEY;
829 if (x->quicktime_format)
830 return xvid_strip_vol_header(avctx, pkt,
831 xvid_enc_stats.hlength, xerr);
833 #if FF_API_CODED_FRAME
834 FF_DISABLE_DEPRECATION_WARNINGS
835 avctx->coded_frame->key_frame = 0;
836 FF_ENABLE_DEPRECATION_WARNINGS
845 av_packet_unref(pkt);
848 av_log(avctx, AV_LOG_ERROR,
849 "Xvid: Encoding Error Occurred: %i\n", xerr);
850 return AVERROR_EXTERNAL;
854 static av_cold int xvid_encode_close(AVCodecContext *avctx)
856 struct xvid_context *x = avctx->priv_data;
858 if (x->encoder_handle) {
859 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
860 x->encoder_handle = NULL;
863 av_freep(&avctx->extradata);
864 if (x->twopassbuffer) {
865 av_freep(&x->twopassbuffer);
866 av_freep(&x->old_twopassbuffer);
867 avctx->stats_out = NULL;
869 if (x->twopassfd>=0) {
870 unlink(x->twopassfile);
874 av_freep(&x->twopassfile);
875 av_freep(&x->intra_matrix);
876 av_freep(&x->inter_matrix);
881 #define OFFSET(x) offsetof(struct xvid_context, x)
882 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
883 static const AVOption options[] = {
884 { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
885 { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
886 { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
887 { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
888 { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
889 { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
890 { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
891 { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
892 { "me_quality", "Motion estimation quality", OFFSET(me_quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 6, VE },
896 static const AVClass xvid_class = {
897 .class_name = "libxvid",
898 .item_name = av_default_item_name,
900 .version = LIBAVUTIL_VERSION_INT,
903 AVCodec ff_libxvid_encoder = {
905 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
906 .type = AVMEDIA_TYPE_VIDEO,
907 .id = AV_CODEC_ID_MPEG4,
908 .priv_data_size = sizeof(struct xvid_context),
909 .init = xvid_encode_init,
910 .encode2 = xvid_encode_frame,
911 .close = xvid_encode_close,
912 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
913 .priv_class = &xvid_class,
914 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
915 FF_CODEC_CAP_INIT_CLEANUP,