2 * Interface to xvidcore for mpeg4 encoding
3 * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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)
31 #include "libavutil/cpu.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/mathematics.h"
38 #include "mpegvideo.h"
41 * Buffer management macros.
43 #define BUFFER_SIZE 1024
44 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
45 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
48 * Structure for the private Xvid context.
49 * This stores all the private context for the codec.
52 AVClass *class; /**< Handle for Xvid encoder */
53 void *encoder_handle; /**< Handle for Xvid encoder */
54 int xsize; /**< Frame x size */
55 int ysize; /**< Frame y size */
56 int vop_flags; /**< VOP flags for Xvid encoder */
57 int vol_flags; /**< VOL flags for Xvid encoder */
58 int me_flags; /**< Motion Estimation flags */
59 int qscale; /**< Do we use constant scale? */
60 int quicktime_format; /**< Are we in a QT-based format? */
61 char *twopassbuffer; /**< Character buffer for two-pass */
62 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
63 char *twopassfile; /**< second pass temp file name */
64 unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
65 unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
66 int lumi_aq; /**< Lumi masking as an aq method */
67 int variance_aq; /**< Variance adaptive quantization */
68 int ssim; /**< SSIM information display mode */
69 int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
74 * Structure for the private first-pass plugin.
76 struct xvid_ff_pass1 {
77 int version; /**< Xvid version */
78 struct xvid_context *context; /**< Pointer to private context */
82 * Xvid 2-Pass Kludge Section
84 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
85 * this section spends time replacing the first pass plugin so we can write
86 * statistic information as libavcodec requests in. We have another kludge
87 * that allows us to pass data to the second pass in Xvid without a custom
88 * rate-control plugin.
92 * Initialize the two-pass plugin and context.
94 * @param param Input construction parameter structure
95 * @param handle Private context handle
96 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
98 static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
100 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param;
101 char *log = x->context->twopassbuffer;
103 /* Do a quick bounds check */
105 return XVID_ERR_FAIL;
107 /* We use snprintf() */
108 /* This is because we can safely prevent a buffer overflow */
110 snprintf(log, BUFFER_REMAINING(log),
111 "# avconv 2-pass log file, using xvid codec\n");
112 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
113 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
114 XVID_VERSION_MAJOR(XVID_VERSION),
115 XVID_VERSION_MINOR(XVID_VERSION),
116 XVID_VERSION_PATCH(XVID_VERSION));
118 *handle = x->context;
123 * Destroy the two-pass plugin context.
125 * @param ref Context pointer for the plugin
126 * @param param Destrooy context
127 * @return Returns 0, success guaranteed
129 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
130 xvid_plg_destroy_t *param)
132 /* Currently cannot think of anything to do on destruction */
133 /* Still, the framework should be here for reference/use */
134 if (ref->twopassbuffer)
135 ref->twopassbuffer[0] = 0;
140 * Enable fast encode mode during the first pass.
142 * @param ref Context pointer for the plugin
143 * @param param Frame data
144 * @return Returns 0, success guaranteed
146 static int xvid_ff_2pass_before(struct xvid_context *ref,
147 xvid_plg_data_t *param)
150 int motion_replacements;
153 /* Nothing to do here, result is changed too much */
154 if (param->zone && param->zone->mode == XVID_ZONE_QUANT)
157 /* We can implement a 'turbo' first pass mode here */
161 motion_remove = ~XVID_ME_CHROMA_PVOP &
162 ~XVID_ME_CHROMA_BVOP &
163 ~XVID_ME_EXTSEARCH16 &
164 ~XVID_ME_ADVANCEDDIAMOND16;
165 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
166 XVID_ME_SKIP_DELTASEARCH |
167 XVID_ME_FASTREFINE16 |
168 XVID_ME_BFRAME_EARLYSTOP;
169 vop_remove = ~XVID_VOP_MODEDECISION_RD &
170 ~XVID_VOP_FAST_MODEDECISION_RD &
171 ~XVID_VOP_TRELLISQUANT &
175 param->vol_flags &= ~XVID_VOL_GMC;
176 param->vop_flags &= vop_remove;
177 param->motion_flags &= motion_remove;
178 param->motion_flags |= motion_replacements;
184 * Capture statistic data and write it during first pass.
186 * @param ref Context pointer for the plugin
187 * @param param Statistic data
188 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
190 static int xvid_ff_2pass_after(struct xvid_context *ref,
191 xvid_plg_data_t *param)
193 char *log = ref->twopassbuffer;
194 const char *frame_types = " ipbs";
197 /* Quick bounds check */
199 return XVID_ERR_FAIL;
201 /* Convert the type given to us into a character */
202 if (param->type < 5 && param->type > 0)
203 frame_type = frame_types[param->type];
205 return XVID_ERR_FAIL;
207 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
208 "%c %d %d %d %d %d %d\n",
209 frame_type, param->stats.quant, param->stats.kblks,
210 param->stats.mblks, param->stats.ublks,
211 param->stats.length, param->stats.hlength);
217 * Dispatch function for our custom plugin.
218 * This handles the dispatch for the Xvid plugin. It passes data
219 * on to other functions for actual processing.
221 * @param ref Context pointer for the plugin
222 * @param cmd The task given for us to complete
223 * @param p1 First parameter (varies)
224 * @param p2 Second parameter (varies)
225 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
227 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
233 case XVID_PLG_BEFORE:
234 return xvid_ff_2pass_before(ref, p1);
235 case XVID_PLG_CREATE:
236 return xvid_ff_2pass_create(p1, p2);
238 return xvid_ff_2pass_after(ref, p1);
239 case XVID_PLG_DESTROY:
240 return xvid_ff_2pass_destroy(ref, p1);
242 return XVID_ERR_FAIL;
247 * Routine to create a global VO/VOL header for MP4 container.
248 * What we do here is extract the header from the Xvid bitstream
249 * as it is encoded. We also strip the repeated headers from the
250 * bitstream when a global header is requested for MPEG-4 ISO
253 * @param avctx AVCodecContext pointer to context
254 * @param frame Pointer to encoded frame data
255 * @param header_len Length of header to search
256 * @param frame_len Length of encoded frame data
257 * @return Returns new length of frame data
259 static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt,
260 unsigned int header_len,
261 unsigned int frame_len)
265 for (i = 0; i < header_len - 3; i++) {
266 if (pkt->data[i] == 0x00 &&
267 pkt->data[i + 1] == 0x00 &&
268 pkt->data[i + 2] == 0x01 &&
269 pkt->data[i + 3] == 0xB6) {
276 /* We need to store the header, so extract it */
277 if (!avctx->extradata) {
278 avctx->extradata = av_malloc(vo_len);
279 if (!avctx->extradata)
280 return AVERROR(ENOMEM);
281 memcpy(avctx->extradata, pkt->data, vo_len);
282 avctx->extradata_size = vo_len;
284 /* Less dangerous now, memmove properly copies the two
285 * chunks of overlapping data */
286 memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
287 pkt->size = frame_len - vo_len;
293 * Routine to correct a possibly erroneous framerate being fed to us.
294 * Xvid currently chokes on framerates where the ticks per frame is
295 * extremely large. This function works to correct problems in this area
296 * by estimating a new framerate and taking the simpler fraction of
299 * @param avctx Context that contains the framerate to correct.
301 static void xvid_correct_framerate(AVCodecContext *avctx)
304 int est_frate, est_fbase;
308 frate = avctx->time_base.den;
309 fbase = avctx->time_base.num;
311 gcd = av_gcd(frate, fbase);
317 if (frate <= 65000 && fbase <= 65000) {
318 avctx->time_base.den = frate;
319 avctx->time_base.num = fbase;
323 fps = (float) frate / (float) fbase;
324 est_fps = roundf(fps * 1000.0) / 1000.0;
326 est_frate = (int) est_fps;
327 if (est_fps > (int) est_fps) {
328 est_frate = (est_frate + 1) * 1000;
329 est_fbase = (int) roundf((float) est_frate / est_fps);
333 gcd = av_gcd(est_frate, est_fbase);
339 if (fbase > est_fbase) {
340 avctx->time_base.den = est_frate;
341 avctx->time_base.num = est_fbase;
342 av_log(avctx, AV_LOG_DEBUG,
343 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
344 est_fps, (((est_fps - fps) / fps) * 100.0));
346 avctx->time_base.den = frate;
347 avctx->time_base.num = fbase;
351 static av_cold int xvid_encode_init(AVCodecContext *avctx)
354 int xvid_flags = avctx->flags;
355 struct xvid_context *x = avctx->priv_data;
356 uint16_t *intra, *inter;
359 xvid_plugin_single_t single = { 0 };
360 struct xvid_ff_pass1 rc2pass1 = { 0 };
361 xvid_plugin_2pass2_t rc2pass2 = { 0 };
362 xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
363 xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
364 xvid_plugin_ssim_t ssim = { 0 };
365 xvid_gbl_init_t xvid_gbl_init = { 0 };
366 xvid_enc_create_t xvid_enc_create = { 0 };
367 xvid_enc_plugin_t plugins[7];
369 /* Bring in VOP flags from avconv command-line */
370 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
371 if (xvid_flags & CODEC_FLAG_4MV)
372 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
374 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
375 if (xvid_flags & CODEC_FLAG_AC_PRED)
376 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
377 if (xvid_flags & CODEC_FLAG_GRAY)
378 x->vop_flags |= XVID_VOP_GREYSCALE;
380 /* Decide which ME quality setting to use */
382 switch (avctx->me_method) {
383 case ME_FULL: /* Quality 6 */
384 x->me_flags |= XVID_ME_EXTSEARCH16 |
387 case ME_EPZS: /* Quality 4 */
388 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
389 XVID_ME_HALFPELREFINE8 |
390 XVID_ME_CHROMA_PVOP |
393 case ME_LOG: /* Quality 2 */
396 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
397 XVID_ME_HALFPELREFINE16;
399 case ME_ZERO: /* Quality 0 */
404 /* Decide how we should decide blocks */
405 switch (avctx->mb_decision) {
407 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
408 x->me_flags |= XVID_ME_HALFPELREFINE8_RD |
409 XVID_ME_QUARTERPELREFINE8_RD |
410 XVID_ME_EXTSEARCH_RD |
411 XVID_ME_CHECKPREDICTION_RD;
413 if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD))
414 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
415 x->me_flags |= XVID_ME_HALFPELREFINE16_RD |
416 XVID_ME_QUARTERPELREFINE16_RD;
421 /* Bring in VOL flags from avconv command-line */
423 if (avctx->flags & CODEC_FLAG_GMC)
429 x->vol_flags |= XVID_VOL_GMC;
430 x->me_flags |= XVID_ME_GME_REFINE;
432 if (xvid_flags & CODEC_FLAG_QPEL) {
433 x->vol_flags |= XVID_VOL_QUARTERPEL;
434 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
435 if (x->vop_flags & XVID_VOP_INTER4V)
436 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
439 xvid_gbl_init.version = XVID_VERSION;
440 xvid_gbl_init.debug = 0;
441 xvid_gbl_init.cpu_flags = 0;
444 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
446 /* Create the encoder reference */
447 xvid_enc_create.version = XVID_VERSION;
449 /* Store the desired frame size */
450 xvid_enc_create.width =
451 x->xsize = avctx->width;
452 xvid_enc_create.height =
453 x->ysize = avctx->height;
455 /* Xvid can determine the proper profile to use */
456 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
458 /* We don't use zones */
459 xvid_enc_create.zones = NULL;
460 xvid_enc_create.num_zones = 0;
462 xvid_enc_create.num_threads = avctx->thread_count;
464 xvid_enc_create.plugins = plugins;
465 xvid_enc_create.num_plugins = 0;
467 /* Initialize Buffers */
468 x->twopassbuffer = NULL;
469 x->old_twopassbuffer = NULL;
470 x->twopassfile = NULL;
472 if (xvid_flags & CODEC_FLAG_PASS1) {
473 rc2pass1.version = XVID_VERSION;
474 rc2pass1.context = x;
475 x->twopassbuffer = av_malloc(BUFFER_SIZE);
476 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
477 if (!x->twopassbuffer || !x->old_twopassbuffer) {
478 av_log(avctx, AV_LOG_ERROR,
479 "Xvid: Cannot allocate 2-pass log buffers\n");
480 return AVERROR(ENOMEM);
482 x->twopassbuffer[0] =
483 x->old_twopassbuffer[0] = 0;
485 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
486 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
487 xvid_enc_create.num_plugins++;
488 } else if (xvid_flags & CODEC_FLAG_PASS2) {
489 rc2pass2.version = XVID_VERSION;
490 rc2pass2.bitrate = avctx->bit_rate;
492 fd = ff_tempfile("xvidff.", &x->twopassfile);
494 av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n");
498 if (!avctx->stats_in) {
499 av_log(avctx, AV_LOG_ERROR,
500 "Xvid: No 2-pass information loaded for second pass\n");
501 return AVERROR_INVALIDDATA;
504 if (strlen(avctx->stats_in) >
505 write(fd, avctx->stats_in, strlen(avctx->stats_in))) {
507 av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n");
512 rc2pass2.filename = x->twopassfile;
513 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
514 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
515 xvid_enc_create.num_plugins++;
516 } else if (!(xvid_flags & CODEC_FLAG_QSCALE)) {
517 /* Single Pass Bitrate Control! */
518 single.version = XVID_VERSION;
519 single.bitrate = avctx->bit_rate;
521 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
522 plugins[xvid_enc_create.num_plugins].param = &single;
523 xvid_enc_create.num_plugins++;
526 if (avctx->lumi_masking != 0.0)
529 if (x->lumi_aq && x->variance_aq) {
531 av_log(avctx, AV_LOG_WARNING,
532 "variance_aq is ignored when lumi_aq is set.\n");
535 /* Luminance Masking */
537 masking_l.method = 0;
538 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
540 /* The old behavior is that when avctx->lumi_masking is specified,
541 * plugins[...].param = NULL. Trying to keep the old behavior here. */
542 plugins[xvid_enc_create.num_plugins].param =
543 avctx->lumi_masking ? NULL : &masking_l;
544 xvid_enc_create.num_plugins++;
548 if (x->variance_aq) {
549 masking_v.method = 1;
550 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
551 plugins[xvid_enc_create.num_plugins].param = &masking_v;
552 xvid_enc_create.num_plugins++;
557 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
558 ssim.b_printstat = x->ssim == 2;
559 ssim.acc = x->ssim_acc;
560 ssim.cpu_flags = xvid_gbl_init.cpu_flags;
561 ssim.b_visualize = 0;
562 plugins[xvid_enc_create.num_plugins].param = &ssim;
563 xvid_enc_create.num_plugins++;
566 /* Frame Rate and Key Frames */
567 xvid_correct_framerate(avctx);
568 xvid_enc_create.fincr = avctx->time_base.num;
569 xvid_enc_create.fbase = avctx->time_base.den;
570 if (avctx->gop_size > 0)
571 xvid_enc_create.max_key_interval = avctx->gop_size;
573 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
576 if (xvid_flags & CODEC_FLAG_QSCALE)
581 xvid_enc_create.min_quant[0] = avctx->qmin;
582 xvid_enc_create.min_quant[1] = avctx->qmin;
583 xvid_enc_create.min_quant[2] = avctx->qmin;
584 xvid_enc_create.max_quant[0] = avctx->qmax;
585 xvid_enc_create.max_quant[1] = avctx->qmax;
586 xvid_enc_create.max_quant[2] = avctx->qmax;
590 x->inter_matrix = NULL;
591 if (avctx->mpeg_quant)
592 x->vol_flags |= XVID_VOL_MPEGQUANT;
593 if ((avctx->intra_matrix || avctx->inter_matrix)) {
594 x->vol_flags |= XVID_VOL_MPEGQUANT;
596 if (avctx->intra_matrix) {
597 intra = avctx->intra_matrix;
598 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
599 if (!x->intra_matrix)
600 return AVERROR(ENOMEM);
603 if (avctx->inter_matrix) {
604 inter = avctx->inter_matrix;
605 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
606 if (!x->inter_matrix)
607 return AVERROR(ENOMEM);
611 for (i = 0; i < 64; i++) {
613 x->intra_matrix[i] = (unsigned char) intra[i];
615 x->inter_matrix[i] = (unsigned char) inter[i];
620 xvid_enc_create.frame_drop_ratio = 0;
621 xvid_enc_create.global = 0;
622 if (xvid_flags & CODEC_FLAG_CLOSED_GOP)
623 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
625 /* Determines which codec mode we are operating in */
626 avctx->extradata = NULL;
627 avctx->extradata_size = 0;
628 if (xvid_flags & CODEC_FLAG_GLOBAL_HEADER) {
629 /* In this case, we are claiming to be MPEG4 */
630 x->quicktime_format = 1;
631 avctx->codec_id = AV_CODEC_ID_MPEG4;
633 /* We are claiming to be Xvid */
634 x->quicktime_format = 0;
635 if (!avctx->codec_tag)
636 avctx->codec_tag = AV_RL32("xvid");
640 xvid_enc_create.max_bframes = avctx->max_b_frames;
641 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
642 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
643 if (avctx->max_b_frames > 0 && !x->quicktime_format)
644 xvid_enc_create.global |= XVID_GLOBAL_PACKED;
646 /* Create encoder context */
647 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
649 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
653 x->encoder_handle = xvid_enc_create.handle;
658 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
659 const AVFrame *picture, int *got_packet)
661 int xerr, i, ret, user_packet = !!pkt->data;
662 struct xvid_context *x = avctx->priv_data;
663 int mb_width = (avctx->width + 15) / 16;
664 int mb_height = (avctx->height + 15) / 16;
667 xvid_enc_frame_t xvid_enc_frame = { 0 };
668 xvid_enc_stats_t xvid_enc_stats = { 0 };
671 (ret = av_new_packet(pkt, mb_width * mb_height * MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0) {
672 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
676 /* Start setting up the frame */
677 xvid_enc_frame.version = XVID_VERSION;
678 xvid_enc_stats.version = XVID_VERSION;
680 /* Let Xvid know where to put the frame. */
681 xvid_enc_frame.bitstream = pkt->data;
682 xvid_enc_frame.length = pkt->size;
684 /* Initialize input image fields */
685 if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
686 av_log(avctx, AV_LOG_ERROR,
687 "Xvid: Color spaces other than 420P not supported\n");
691 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
693 for (i = 0; i < 4; i++) {
694 xvid_enc_frame.input.plane[i] = picture->data[i];
695 xvid_enc_frame.input.stride[i] = picture->linesize[i];
699 xvid_enc_frame.vop_flags = x->vop_flags;
700 xvid_enc_frame.vol_flags = x->vol_flags;
701 xvid_enc_frame.motion = x->me_flags;
702 xvid_enc_frame.type =
703 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
704 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
705 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
708 /* Pixel aspect ratio setting */
709 if (avctx->sample_aspect_ratio.num < 1 || avctx->sample_aspect_ratio.num > 255 ||
710 avctx->sample_aspect_ratio.den < 1 || avctx->sample_aspect_ratio.den > 255) {
711 av_log(avctx, AV_LOG_ERROR, "Invalid pixel aspect ratio %i/%i\n",
712 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
715 xvid_enc_frame.par = XVID_PAR_EXT;
716 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
717 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
721 xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
723 xvid_enc_frame.quant = 0;
726 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
727 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
730 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
731 &xvid_enc_frame, &xvid_enc_stats);
733 /* Two-pass log buffer swapping */
734 avctx->stats_out = NULL;
735 if (x->twopassbuffer) {
736 tmp = x->old_twopassbuffer;
737 x->old_twopassbuffer = x->twopassbuffer;
738 x->twopassbuffer = tmp;
739 x->twopassbuffer[0] = 0;
740 if (x->old_twopassbuffer[0] != 0) {
741 avctx->stats_out = x->old_twopassbuffer;
746 uint8_t *sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
749 return AVERROR(ENOMEM);
750 *(int *)sd = xvid_enc_stats.quant * FF_QP2LAMBDA;
754 avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
755 if (xvid_enc_stats.type == XVID_TYPE_PVOP)
756 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
757 else if (xvid_enc_stats.type == XVID_TYPE_BVOP)
758 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
759 else if (xvid_enc_stats.type == XVID_TYPE_SVOP)
760 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_S;
762 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
763 if (xvid_enc_frame.out_flags & XVID_KEYFRAME) {
764 avctx->coded_frame->key_frame = 1;
765 pkt->flags |= AV_PKT_FLAG_KEY;
766 if (x->quicktime_format)
767 return xvid_strip_vol_header(avctx, pkt,
768 xvid_enc_stats.hlength, xerr);
770 avctx->coded_frame->key_frame = 0;
781 av_log(avctx, AV_LOG_ERROR,
782 "Xvid: Encoding Error Occurred: %i\n", xerr);
787 static av_cold int xvid_encode_close(AVCodecContext *avctx)
789 struct xvid_context *x = avctx->priv_data;
791 if (x->encoder_handle) {
792 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
793 x->encoder_handle = NULL;
796 av_freep(&avctx->extradata);
797 if (x->twopassbuffer) {
798 av_free(x->twopassbuffer);
799 av_free(x->old_twopassbuffer);
801 av_free(x->twopassfile);
802 av_free(x->intra_matrix);
803 av_free(x->inter_matrix);
808 #define OFFSET(x) offsetof(struct xvid_context, x)
809 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
810 static const AVOption options[] = {
811 { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
812 { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
813 { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
814 { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
815 { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
816 { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
817 { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
818 { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
822 static const AVClass xvid_class = {
823 .class_name = "libxvid",
824 .item_name = av_default_item_name,
826 .version = LIBAVUTIL_VERSION_INT,
829 AVCodec ff_libxvid_encoder = {
831 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
832 .type = AVMEDIA_TYPE_VIDEO,
833 .id = AV_CODEC_ID_MPEG4,
834 .priv_data_size = sizeof(struct xvid_context),
835 .init = xvid_encode_init,
836 .encode2 = xvid_encode_frame,
837 .close = xvid_encode_close,
838 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
839 .priv_class = &xvid_class,
840 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
841 FF_CODEC_CAP_INIT_CLEANUP,