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"
35 #include "mpegvideo.h"
38 * Buffer management macros.
40 #define BUFFER_SIZE 1024
41 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
42 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
45 * Structure for the private Xvid context.
46 * This stores all the private context for the codec.
49 void *encoder_handle; /**< Handle for Xvid encoder */
50 int xsize; /**< Frame x size */
51 int ysize; /**< Frame y size */
52 int vop_flags; /**< VOP flags for Xvid encoder */
53 int vol_flags; /**< VOL flags for Xvid encoder */
54 int me_flags; /**< Motion Estimation flags */
55 int qscale; /**< Do we use constant scale? */
56 int quicktime_format; /**< Are we in a QT-based format? */
57 char *twopassbuffer; /**< Character buffer for two-pass */
58 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
59 char *twopassfile; /**< second pass temp file name */
60 unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
61 unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
65 * Structure for the private first-pass plugin.
67 struct xvid_ff_pass1 {
68 int version; /**< Xvid version */
69 struct xvid_context *context; /**< Pointer to private context */
73 * Xvid 2-Pass Kludge Section
75 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
76 * this section spends time replacing the first pass plugin so we can write
77 * statistic information as libavcodec requests in. We have another kludge
78 * that allows us to pass data to the second pass in Xvid without a custom
79 * rate-control plugin.
83 * Initialize the two-pass plugin and context.
85 * @param param Input construction parameter structure
86 * @param handle Private context handle
87 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
89 static int xvid_ff_2pass_create(xvid_plg_create_t * param,
91 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
92 char *log = x->context->twopassbuffer;
94 /* Do a quick bounds check */
98 /* We use snprintf() */
99 /* This is because we can safely prevent a buffer overflow */
101 snprintf(log, BUFFER_REMAINING(log),
102 "# avconv 2-pass log file, using xvid codec\n");
103 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
104 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
105 XVID_VERSION_MAJOR(XVID_VERSION),
106 XVID_VERSION_MINOR(XVID_VERSION),
107 XVID_VERSION_PATCH(XVID_VERSION));
109 *handle = x->context;
114 * Destroy the two-pass plugin context.
116 * @param ref Context pointer for the plugin
117 * @param param Destrooy context
118 * @return Returns 0, success guaranteed
120 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
121 xvid_plg_destroy_t *param) {
122 /* Currently cannot think of anything to do on destruction */
123 /* Still, the framework should be here for reference/use */
124 if( ref->twopassbuffer != NULL )
125 ref->twopassbuffer[0] = 0;
130 * Enable fast encode mode during the first pass.
132 * @param ref Context pointer for the plugin
133 * @param param Frame data
134 * @return Returns 0, success guaranteed
136 static int xvid_ff_2pass_before(struct xvid_context *ref,
137 xvid_plg_data_t *param) {
139 int motion_replacements;
142 /* Nothing to do here, result is changed too much */
143 if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
146 /* We can implement a 'turbo' first pass mode here */
150 motion_remove = ~XVID_ME_CHROMA_PVOP &
151 ~XVID_ME_CHROMA_BVOP &
152 ~XVID_ME_EXTSEARCH16 &
153 ~XVID_ME_ADVANCEDDIAMOND16;
154 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
155 XVID_ME_SKIP_DELTASEARCH |
156 XVID_ME_FASTREFINE16 |
157 XVID_ME_BFRAME_EARLYSTOP;
158 vop_remove = ~XVID_VOP_MODEDECISION_RD &
159 ~XVID_VOP_FAST_MODEDECISION_RD &
160 ~XVID_VOP_TRELLISQUANT &
164 param->vol_flags &= ~XVID_VOL_GMC;
165 param->vop_flags &= vop_remove;
166 param->motion_flags &= motion_remove;
167 param->motion_flags |= motion_replacements;
173 * Capture statistic data and write it during first pass.
175 * @param ref Context pointer for the plugin
176 * @param param Statistic data
177 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
179 static int xvid_ff_2pass_after(struct xvid_context *ref,
180 xvid_plg_data_t *param) {
181 char *log = ref->twopassbuffer;
182 const char *frame_types = " ipbs";
185 /* Quick bounds check */
187 return XVID_ERR_FAIL;
189 /* Convert the type given to us into a character */
190 if( param->type < 5 && param->type > 0 ) {
191 frame_type = frame_types[param->type];
193 return XVID_ERR_FAIL;
196 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
197 "%c %d %d %d %d %d %d\n",
198 frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
199 param->stats.ublks, param->stats.length, param->stats.hlength);
205 * Dispatch function for our custom plugin.
206 * This handles the dispatch for the Xvid plugin. It passes data
207 * on to other functions for actual processing.
209 * @param ref Context pointer for the plugin
210 * @param cmd The task given for us to complete
211 * @param p1 First parameter (varies)
212 * @param p2 Second parameter (varies)
213 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
215 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
222 case XVID_PLG_BEFORE:
223 return xvid_ff_2pass_before(ref, p1);
225 case XVID_PLG_CREATE:
226 return xvid_ff_2pass_create(p1, p2);
229 return xvid_ff_2pass_after(ref, p1);
231 case XVID_PLG_DESTROY:
232 return xvid_ff_2pass_destroy(ref, p1);
235 return XVID_ERR_FAIL;
240 * Routine to create a global VO/VOL header for MP4 container.
241 * What we do here is extract the header from the Xvid bitstream
242 * as it is encoded. We also strip the repeated headers from the
243 * bitstream when a global header is requested for MPEG-4 ISO
246 * @param avctx AVCodecContext pointer to context
247 * @param frame Pointer to encoded frame data
248 * @param header_len Length of header to search
249 * @param frame_len Length of encoded frame data
250 * @return Returns new length of frame data
252 static int xvid_strip_vol_header(AVCodecContext *avctx,
254 unsigned int header_len,
255 unsigned int frame_len) {
258 for( i = 0; i < header_len - 3; i++ ) {
259 if( pkt->data[i] == 0x00 &&
260 pkt->data[i+1] == 0x00 &&
261 pkt->data[i+2] == 0x01 &&
262 pkt->data[i+3] == 0xB6 ) {
269 /* We need to store the header, so extract it */
270 if( avctx->extradata == NULL ) {
271 avctx->extradata = av_malloc(vo_len);
272 memcpy(avctx->extradata, pkt->data, vo_len);
273 avctx->extradata_size = vo_len;
275 /* Less dangerous now, memmove properly copies the two
276 chunks of overlapping data */
277 memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
278 pkt->size = frame_len - vo_len;
284 * Routine to correct a possibly erroneous framerate being fed to us.
285 * Xvid currently chokes on framerates where the ticks per frame is
286 * extremely large. This function works to correct problems in this area
287 * by estimating a new framerate and taking the simpler fraction of
290 * @param avctx Context that contains the framerate to correct.
292 static void xvid_correct_framerate(AVCodecContext *avctx)
295 int est_frate, est_fbase;
299 frate = avctx->time_base.den;
300 fbase = avctx->time_base.num;
302 gcd = av_gcd(frate, fbase);
308 if( frate <= 65000 && fbase <= 65000 ) {
309 avctx->time_base.den = frate;
310 avctx->time_base.num = fbase;
314 fps = (float)frate / (float)fbase;
315 est_fps = roundf(fps * 1000.0) / 1000.0;
317 est_frate = (int)est_fps;
318 if( est_fps > (int)est_fps ) {
319 est_frate = (est_frate + 1) * 1000;
320 est_fbase = (int)roundf((float)est_frate / est_fps);
324 gcd = av_gcd(est_frate, est_fbase);
330 if( fbase > est_fbase ) {
331 avctx->time_base.den = est_frate;
332 avctx->time_base.num = est_fbase;
333 av_log(avctx, AV_LOG_DEBUG,
334 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
335 est_fps, (((est_fps - fps)/fps) * 100.0));
337 avctx->time_base.den = frate;
338 avctx->time_base.num = fbase;
342 static av_cold int xvid_encode_init(AVCodecContext *avctx) {
344 int xvid_flags = avctx->flags;
345 struct xvid_context *x = avctx->priv_data;
346 uint16_t *intra, *inter;
349 xvid_plugin_single_t single = { 0 };
350 struct xvid_ff_pass1 rc2pass1 = { 0 };
351 xvid_plugin_2pass2_t rc2pass2 = { 0 };
352 xvid_gbl_init_t xvid_gbl_init = { 0 };
353 xvid_enc_create_t xvid_enc_create = { 0 };
354 xvid_enc_plugin_t plugins[7];
356 /* Bring in VOP flags from avconv command-line */
357 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
358 if( xvid_flags & CODEC_FLAG_4MV )
359 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
362 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
363 if( xvid_flags & CODEC_FLAG_AC_PRED )
364 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
365 if( xvid_flags & CODEC_FLAG_GRAY )
366 x->vop_flags |= XVID_VOP_GREYSCALE;
368 /* Decide which ME quality setting to use */
370 switch( avctx->me_method ) {
371 case ME_FULL: /* Quality 6 */
372 x->me_flags |= XVID_ME_EXTSEARCH16
373 | XVID_ME_EXTSEARCH8;
375 case ME_EPZS: /* Quality 4 */
376 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
377 | XVID_ME_HALFPELREFINE8
378 | XVID_ME_CHROMA_PVOP
379 | XVID_ME_CHROMA_BVOP;
381 case ME_LOG: /* Quality 2 */
384 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
385 | XVID_ME_HALFPELREFINE16;
387 case ME_ZERO: /* Quality 0 */
392 /* Decide how we should decide blocks */
393 switch( avctx->mb_decision ) {
395 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
396 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
397 | XVID_ME_QUARTERPELREFINE8_RD
398 | XVID_ME_EXTSEARCH_RD
399 | XVID_ME_CHECKPREDICTION_RD;
401 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
402 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
403 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
404 | XVID_ME_QUARTERPELREFINE16_RD;
410 /* Bring in VOL flags from avconv command-line */
412 if( xvid_flags & CODEC_FLAG_GMC ) {
413 x->vol_flags |= XVID_VOL_GMC;
414 x->me_flags |= XVID_ME_GME_REFINE;
416 if( xvid_flags & CODEC_FLAG_QPEL ) {
417 x->vol_flags |= XVID_VOL_QUARTERPEL;
418 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
419 if( x->vop_flags & XVID_VOP_INTER4V )
420 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
423 xvid_gbl_init.version = XVID_VERSION;
424 xvid_gbl_init.debug = 0;
427 /* Xvid's PPC support is borked, use libavcodec to detect */
429 if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
430 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
433 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
435 /* Xvid can detect on x86 */
436 xvid_gbl_init.cpu_flags = 0;
440 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
442 /* Create the encoder reference */
443 xvid_enc_create.version = XVID_VERSION;
445 /* Store the desired frame size */
446 xvid_enc_create.width = x->xsize = avctx->width;
447 xvid_enc_create.height = x->ysize = avctx->height;
449 /* Xvid can determine the proper profile to use */
450 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
452 /* We don't use zones */
453 xvid_enc_create.zones = NULL;
454 xvid_enc_create.num_zones = 0;
456 xvid_enc_create.num_threads = avctx->thread_count;
458 xvid_enc_create.plugins = plugins;
459 xvid_enc_create.num_plugins = 0;
461 /* Initialize Buffers */
462 x->twopassbuffer = NULL;
463 x->old_twopassbuffer = NULL;
464 x->twopassfile = NULL;
466 if( xvid_flags & CODEC_FLAG_PASS1 ) {
467 rc2pass1.version = XVID_VERSION;
468 rc2pass1.context = x;
469 x->twopassbuffer = av_malloc(BUFFER_SIZE);
470 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
471 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
472 av_log(avctx, AV_LOG_ERROR,
473 "Xvid: Cannot allocate 2-pass log buffers\n");
476 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
478 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
479 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
480 xvid_enc_create.num_plugins++;
481 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
482 rc2pass2.version = XVID_VERSION;
483 rc2pass2.bitrate = avctx->bit_rate;
485 fd = ff_tempfile("xvidff.", &x->twopassfile);
487 av_log(avctx, AV_LOG_ERROR,
488 "Xvid: Cannot write 2-pass pipe\n");
492 if( avctx->stats_in == NULL ) {
493 av_log(avctx, AV_LOG_ERROR,
494 "Xvid: No 2-pass information loaded for second pass\n");
498 if( strlen(avctx->stats_in) >
499 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
501 av_log(avctx, AV_LOG_ERROR,
502 "Xvid: Cannot write to 2-pass pipe\n");
507 rc2pass2.filename = x->twopassfile;
508 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
509 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
510 xvid_enc_create.num_plugins++;
511 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
512 /* Single Pass Bitrate Control! */
513 single.version = XVID_VERSION;
514 single.bitrate = avctx->bit_rate;
516 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
517 plugins[xvid_enc_create.num_plugins].param = &single;
518 xvid_enc_create.num_plugins++;
521 /* Luminance Masking */
522 if( 0.0 != avctx->lumi_masking ) {
523 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
524 plugins[xvid_enc_create.num_plugins].param = NULL;
525 xvid_enc_create.num_plugins++;
528 /* Frame Rate and Key Frames */
529 xvid_correct_framerate(avctx);
530 xvid_enc_create.fincr = avctx->time_base.num;
531 xvid_enc_create.fbase = avctx->time_base.den;
532 if( avctx->gop_size > 0 )
533 xvid_enc_create.max_key_interval = avctx->gop_size;
535 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
538 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
541 xvid_enc_create.min_quant[0] = avctx->qmin;
542 xvid_enc_create.min_quant[1] = avctx->qmin;
543 xvid_enc_create.min_quant[2] = avctx->qmin;
544 xvid_enc_create.max_quant[0] = avctx->qmax;
545 xvid_enc_create.max_quant[1] = avctx->qmax;
546 xvid_enc_create.max_quant[2] = avctx->qmax;
549 x->intra_matrix = x->inter_matrix = NULL;
550 if( avctx->mpeg_quant )
551 x->vol_flags |= XVID_VOL_MPEGQUANT;
552 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
553 x->vol_flags |= XVID_VOL_MPEGQUANT;
555 if( avctx->intra_matrix ) {
556 intra = avctx->intra_matrix;
557 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
560 if( avctx->inter_matrix ) {
561 inter = avctx->inter_matrix;
562 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
566 for( i = 0; i < 64; i++ ) {
568 x->intra_matrix[i] = (unsigned char)intra[i];
570 x->inter_matrix[i] = (unsigned char)inter[i];
575 xvid_enc_create.frame_drop_ratio = 0;
576 xvid_enc_create.global = 0;
577 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
578 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
580 /* Determines which codec mode we are operating in */
581 avctx->extradata = NULL;
582 avctx->extradata_size = 0;
583 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
584 /* In this case, we are claiming to be MPEG4 */
585 x->quicktime_format = 1;
586 avctx->codec_id = AV_CODEC_ID_MPEG4;
588 /* We are claiming to be Xvid */
589 x->quicktime_format = 0;
590 if(!avctx->codec_tag)
591 avctx->codec_tag = AV_RL32("xvid");
595 xvid_enc_create.max_bframes = avctx->max_b_frames;
596 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
597 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
598 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
600 /* Create encoder context */
601 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
603 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
607 x->encoder_handle = xvid_enc_create.handle;
608 avctx->coded_frame = av_frame_alloc();
609 if (!avctx->coded_frame)
610 return AVERROR(ENOMEM);
615 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
616 const AVFrame *picture, int *got_packet)
618 int xerr, i, ret, user_packet = !!pkt->data;
620 struct xvid_context *x = avctx->priv_data;
621 AVFrame *p = avctx->coded_frame;
622 int mb_width = (avctx->width + 15) / 16;
623 int mb_height = (avctx->height + 15) / 16;
625 xvid_enc_frame_t xvid_enc_frame = { 0 };
626 xvid_enc_stats_t xvid_enc_stats = { 0 };
629 (ret = av_new_packet(pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0) {
630 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
634 /* Start setting up the frame */
635 xvid_enc_frame.version = XVID_VERSION;
636 xvid_enc_stats.version = XVID_VERSION;
638 /* Let Xvid know where to put the frame. */
639 xvid_enc_frame.bitstream = pkt->data;
640 xvid_enc_frame.length = pkt->size;
642 /* Initialize input image fields */
643 if( avctx->pix_fmt != AV_PIX_FMT_YUV420P ) {
644 av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
648 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
650 for( i = 0; i < 4; i++ ) {
651 xvid_enc_frame.input.plane[i] = picture->data[i];
652 xvid_enc_frame.input.stride[i] = picture->linesize[i];
656 xvid_enc_frame.vop_flags = x->vop_flags;
657 xvid_enc_frame.vol_flags = x->vol_flags;
658 xvid_enc_frame.motion = x->me_flags;
659 xvid_enc_frame.type =
660 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
661 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
662 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
665 /* Pixel aspect ratio setting */
666 if (avctx->sample_aspect_ratio.num < 1 || avctx->sample_aspect_ratio.num > 255 ||
667 avctx->sample_aspect_ratio.den < 1 || avctx->sample_aspect_ratio.den > 255) {
668 av_log(avctx, AV_LOG_ERROR, "Invalid pixel aspect ratio %i/%i\n",
669 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
672 xvid_enc_frame.par = XVID_PAR_EXT;
673 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
674 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
677 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
678 else xvid_enc_frame.quant = 0;
681 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
682 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
685 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
686 &xvid_enc_frame, &xvid_enc_stats);
688 /* Two-pass log buffer swapping */
689 avctx->stats_out = NULL;
690 if( x->twopassbuffer ) {
691 tmp = x->old_twopassbuffer;
692 x->old_twopassbuffer = x->twopassbuffer;
693 x->twopassbuffer = tmp;
694 x->twopassbuffer[0] = 0;
695 if( x->old_twopassbuffer[0] != 0 ) {
696 avctx->stats_out = x->old_twopassbuffer;
703 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
704 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
705 p->pict_type = AV_PICTURE_TYPE_P;
706 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
707 p->pict_type = AV_PICTURE_TYPE_B;
708 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
709 p->pict_type = AV_PICTURE_TYPE_S;
711 p->pict_type = AV_PICTURE_TYPE_I;
712 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
714 pkt->flags |= AV_PKT_FLAG_KEY;
715 if( x->quicktime_format )
716 return xvid_strip_vol_header(avctx, pkt,
717 xvid_enc_stats.hlength, xerr);
729 av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
734 static av_cold int xvid_encode_close(AVCodecContext *avctx) {
735 struct xvid_context *x = avctx->priv_data;
737 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
739 av_freep(&avctx->extradata);
740 if( x->twopassbuffer != NULL ) {
741 av_free(x->twopassbuffer);
742 av_free(x->old_twopassbuffer);
744 av_free(x->twopassfile);
745 av_free(x->intra_matrix);
746 av_free(x->inter_matrix);
751 AVCodec ff_libxvid_encoder = {
753 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
754 .type = AVMEDIA_TYPE_VIDEO,
755 .id = AV_CODEC_ID_MPEG4,
756 .priv_data_size = sizeof(struct xvid_context),
757 .init = xvid_encode_init,
758 .encode2 = xvid_encode_frame,
759 .close = xvid_encode_close,
760 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },