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/file.h"
33 #include "libavutil/cpu.h"
34 #include "libavutil/intreadwrite.h"
35 #include "libavutil/mathematics.h"
37 #include "mpegvideo.h"
40 * Buffer management macros.
42 #define BUFFER_SIZE 1024
43 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
44 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
47 * Structure for the private Xvid context.
48 * This stores all the private context for the codec.
51 void *encoder_handle; /**< Handle for Xvid encoder */
52 int xsize; /**< Frame x size */
53 int ysize; /**< Frame y size */
54 int vop_flags; /**< VOP flags for Xvid encoder */
55 int vol_flags; /**< VOL flags for Xvid encoder */
56 int me_flags; /**< Motion Estimation flags */
57 int qscale; /**< Do we use constant scale? */
58 int quicktime_format; /**< Are we in a QT-based format? */
59 char *twopassbuffer; /**< Character buffer for two-pass */
60 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
61 char *twopassfile; /**< second pass temp file name */
63 unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
64 unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
65 int lumi_aq; /**< Lumi masking as an aq method */
66 int variance_aq; /**< Variance adaptive quantization */
67 int ssim; /**< SSIM information display mode */
68 int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
72 * Structure for the private first-pass plugin.
74 struct xvid_ff_pass1 {
75 int version; /**< Xvid version */
76 struct xvid_context *context; /**< Pointer to private context */
79 static int xvid_encode_close(AVCodecContext *avctx);
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,
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 "# ffmpeg 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) {
131 /* Currently cannot think of anything to do on destruction */
132 /* Still, the framework should be here for reference/use */
133 if( ref->twopassbuffer != NULL )
134 ref->twopassbuffer[0] = 0;
139 * Enable fast encode mode during the first pass.
141 * @param ref Context pointer for the plugin
142 * @param param Frame data
143 * @return Returns 0, success guaranteed
145 static int xvid_ff_2pass_before(struct xvid_context *ref,
146 xvid_plg_data_t *param) {
148 int motion_replacements;
151 /* Nothing to do here, result is changed too much */
152 if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
155 /* We can implement a 'turbo' first pass mode here */
159 motion_remove = ~XVID_ME_CHROMA_PVOP &
160 ~XVID_ME_CHROMA_BVOP &
161 ~XVID_ME_EXTSEARCH16 &
162 ~XVID_ME_ADVANCEDDIAMOND16;
163 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
164 XVID_ME_SKIP_DELTASEARCH |
165 XVID_ME_FASTREFINE16 |
166 XVID_ME_BFRAME_EARLYSTOP;
167 vop_remove = ~XVID_VOP_MODEDECISION_RD &
168 ~XVID_VOP_FAST_MODEDECISION_RD &
169 ~XVID_VOP_TRELLISQUANT &
173 param->vol_flags &= ~XVID_VOL_GMC;
174 param->vop_flags &= vop_remove;
175 param->motion_flags &= motion_remove;
176 param->motion_flags |= motion_replacements;
182 * Capture statistic data and write it during first pass.
184 * @param ref Context pointer for the plugin
185 * @param param Statistic data
186 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
188 static int xvid_ff_2pass_after(struct xvid_context *ref,
189 xvid_plg_data_t *param) {
190 char *log = ref->twopassbuffer;
191 const char *frame_types = " ipbs";
194 /* Quick bounds check */
196 return XVID_ERR_FAIL;
198 /* Convert the type given to us into a character */
199 if( param->type < 5 && param->type > 0 ) {
200 frame_type = frame_types[param->type];
202 return XVID_ERR_FAIL;
205 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
206 "%c %d %d %d %d %d %d\n",
207 frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
208 param->stats.ublks, param->stats.length, param->stats.hlength);
214 * Dispatch function for our custom plugin.
215 * This handles the dispatch for the Xvid plugin. It passes data
216 * on to other functions for actual processing.
218 * @param ref Context pointer for the plugin
219 * @param cmd The task given for us to complete
220 * @param p1 First parameter (varies)
221 * @param p2 Second parameter (varies)
222 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
224 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
231 case XVID_PLG_BEFORE:
232 return xvid_ff_2pass_before(ref, p1);
234 case XVID_PLG_CREATE:
235 return xvid_ff_2pass_create(p1, p2);
238 return xvid_ff_2pass_after(ref, p1);
240 case XVID_PLG_DESTROY:
241 return xvid_ff_2pass_destroy(ref, p1);
244 return XVID_ERR_FAIL;
249 * Routine to create a global VO/VOL header for MP4 container.
250 * What we do here is extract the header from the Xvid bitstream
251 * as it is encoded. We also strip the repeated headers from the
252 * bitstream when a global header is requested for MPEG-4 ISO
255 * @param avctx AVCodecContext pointer to context
256 * @param frame Pointer to encoded frame data
257 * @param header_len Length of header to search
258 * @param frame_len Length of encoded frame data
259 * @return Returns new length of frame data
261 static int xvid_strip_vol_header(AVCodecContext *avctx,
263 unsigned int header_len,
264 unsigned int frame_len) {
267 for( i = 0; i < header_len - 3; i++ ) {
268 if( pkt->data[i] == 0x00 &&
269 pkt->data[i+1] == 0x00 &&
270 pkt->data[i+2] == 0x01 &&
271 pkt->data[i+3] == 0xB6 ) {
278 /* We need to store the header, so extract it */
279 if( avctx->extradata == NULL ) {
280 avctx->extradata = av_malloc(vo_len);
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) {
353 int xvid_flags = avctx->flags;
354 struct xvid_context *x = avctx->priv_data;
355 uint16_t *intra, *inter;
358 xvid_plugin_single_t single = { 0 };
359 struct xvid_ff_pass1 rc2pass1 = { 0 };
360 xvid_plugin_2pass2_t rc2pass2 = { 0 };
361 xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
362 xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
363 xvid_plugin_ssim_t ssim = { 0 };
364 xvid_gbl_init_t xvid_gbl_init = { 0 };
365 xvid_enc_create_t xvid_enc_create = { 0 };
366 xvid_enc_plugin_t plugins[4];
370 /* Bring in VOP flags from ffmpeg command-line */
371 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
372 if( xvid_flags & CODEC_FLAG_4MV )
373 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
375 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
376 if( xvid_flags & CODEC_FLAG_AC_PRED )
377 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
378 if( xvid_flags & CODEC_FLAG_GRAY )
379 x->vop_flags |= XVID_VOP_GREYSCALE;
381 /* Decide which ME quality setting to use */
383 switch( avctx->me_method ) {
384 case ME_FULL: /* Quality 6 */
385 x->me_flags |= XVID_ME_EXTSEARCH16
386 | XVID_ME_EXTSEARCH8;
388 case ME_EPZS: /* Quality 4 */
389 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
390 | XVID_ME_HALFPELREFINE8
391 | XVID_ME_CHROMA_PVOP
392 | XVID_ME_CHROMA_BVOP;
394 case ME_LOG: /* Quality 2 */
397 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
398 | XVID_ME_HALFPELREFINE16;
400 case ME_ZERO: /* Quality 0 */
405 /* Decide how we should decide blocks */
406 switch( avctx->mb_decision ) {
408 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
409 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
410 | XVID_ME_QUARTERPELREFINE8_RD
411 | XVID_ME_EXTSEARCH_RD
412 | XVID_ME_CHECKPREDICTION_RD;
414 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
415 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
416 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
417 | XVID_ME_QUARTERPELREFINE16_RD;
423 /* Bring in VOL flags from ffmpeg command-line */
425 if( xvid_flags & CODEC_FLAG_GMC ) {
426 x->vol_flags |= XVID_VOL_GMC;
427 x->me_flags |= XVID_ME_GME_REFINE;
429 if( xvid_flags & CODEC_FLAG_QPEL ) {
430 x->vol_flags |= XVID_VOL_QUARTERPEL;
431 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
432 if( x->vop_flags & XVID_VOP_INTER4V )
433 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
436 xvid_gbl_init.version = XVID_VERSION;
437 xvid_gbl_init.debug = 0;
440 /* Xvid's PPC support is borked, use libavcodec to detect */
442 if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
443 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
446 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
448 /* Xvid can detect on x86 */
449 xvid_gbl_init.cpu_flags = 0;
453 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
455 /* Create the encoder reference */
456 xvid_enc_create.version = XVID_VERSION;
458 /* Store the desired frame size */
459 xvid_enc_create.width = x->xsize = avctx->width;
460 xvid_enc_create.height = x->ysize = avctx->height;
462 /* Xvid can determine the proper profile to use */
463 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
465 /* We don't use zones */
466 xvid_enc_create.zones = NULL;
467 xvid_enc_create.num_zones = 0;
469 xvid_enc_create.num_threads = avctx->thread_count;
471 xvid_enc_create.plugins = plugins;
472 xvid_enc_create.num_plugins = 0;
474 /* Initialize Buffers */
475 x->twopassbuffer = NULL;
476 x->old_twopassbuffer = NULL;
477 x->twopassfile = NULL;
479 if( xvid_flags & CODEC_FLAG_PASS1 ) {
480 rc2pass1.version = XVID_VERSION;
481 rc2pass1.context = x;
482 x->twopassbuffer = av_malloc(BUFFER_SIZE);
483 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
484 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
485 av_log(avctx, AV_LOG_ERROR,
486 "Xvid: Cannot allocate 2-pass log buffers\n");
489 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
491 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
492 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
493 xvid_enc_create.num_plugins++;
494 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
495 rc2pass2.version = XVID_VERSION;
496 rc2pass2.bitrate = avctx->bit_rate;
498 fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx);
500 av_log(avctx, AV_LOG_ERROR,
501 "Xvid: Cannot write 2-pass pipe\n");
506 if( avctx->stats_in == NULL ) {
507 av_log(avctx, AV_LOG_ERROR,
508 "Xvid: No 2-pass information loaded for second pass\n");
512 if( strlen(avctx->stats_in) >
513 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
514 av_log(avctx, AV_LOG_ERROR,
515 "Xvid: Cannot write to 2-pass pipe\n");
519 rc2pass2.filename = x->twopassfile;
520 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
521 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
522 xvid_enc_create.num_plugins++;
523 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
524 /* Single Pass Bitrate Control! */
525 single.version = XVID_VERSION;
526 single.bitrate = avctx->bit_rate;
528 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
529 plugins[xvid_enc_create.num_plugins].param = &single;
530 xvid_enc_create.num_plugins++;
533 if ( avctx->lumi_masking != 0.0)
536 /* Luminance Masking */
538 masking_l.method = 0;
539 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
541 /* The old behavior is that when avctx->lumi_masking is specified,
542 * plugins[...].param = NULL. Trying to keep the old behavior here. */
543 plugins[xvid_enc_create.num_plugins].param = 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++;
555 if( x->lumi_aq && x->variance_aq )
556 av_log(avctx, AV_LOG_INFO,
557 "Both lumi_aq and variance_aq are enabled. The resulting quality"
558 "will be the worse one of the two effects made by the AQ.\n");
562 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
563 ssim.b_printstat = ( x->ssim == 2 );
564 ssim.acc = x->ssim_acc;
565 ssim.cpu_flags = xvid_gbl_init.cpu_flags;
566 ssim.b_visualize = 0;
567 plugins[xvid_enc_create.num_plugins].param = &ssim;
568 xvid_enc_create.num_plugins++;
571 /* Frame Rate and Key Frames */
572 xvid_correct_framerate(avctx);
573 xvid_enc_create.fincr = avctx->time_base.num;
574 xvid_enc_create.fbase = avctx->time_base.den;
575 if( avctx->gop_size > 0 )
576 xvid_enc_create.max_key_interval = avctx->gop_size;
578 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
581 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
584 xvid_enc_create.min_quant[0] = avctx->qmin;
585 xvid_enc_create.min_quant[1] = avctx->qmin;
586 xvid_enc_create.min_quant[2] = avctx->qmin;
587 xvid_enc_create.max_quant[0] = avctx->qmax;
588 xvid_enc_create.max_quant[1] = avctx->qmax;
589 xvid_enc_create.max_quant[2] = avctx->qmax;
592 x->intra_matrix = x->inter_matrix = NULL;
593 if( avctx->mpeg_quant )
594 x->vol_flags |= XVID_VOL_MPEGQUANT;
595 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
596 x->vol_flags |= XVID_VOL_MPEGQUANT;
598 if( avctx->intra_matrix ) {
599 intra = avctx->intra_matrix;
600 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
603 if( avctx->inter_matrix ) {
604 inter = avctx->inter_matrix;
605 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
609 for( i = 0; i < 64; i++ ) {
611 x->intra_matrix[i] = (unsigned char)intra[i];
613 x->inter_matrix[i] = (unsigned char)inter[i];
618 xvid_enc_create.frame_drop_ratio = 0;
619 xvid_enc_create.global = 0;
620 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
621 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
623 /* Determines which codec mode we are operating in */
624 avctx->extradata = NULL;
625 avctx->extradata_size = 0;
626 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
627 /* In this case, we are claiming to be MPEG4 */
628 x->quicktime_format = 1;
629 avctx->codec_id = AV_CODEC_ID_MPEG4;
631 /* We are claiming to be Xvid */
632 x->quicktime_format = 0;
633 if(!avctx->codec_tag)
634 avctx->codec_tag = AV_RL32("xvid");
638 xvid_enc_create.max_bframes = avctx->max_b_frames;
639 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
640 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
641 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
643 av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
645 /* Create encoder context */
646 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
648 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
652 x->encoder_handle = xvid_enc_create.handle;
653 avctx->coded_frame = av_frame_alloc();
654 if (!avctx->coded_frame)
655 return AVERROR(ENOMEM);
659 xvid_encode_close(avctx);
663 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
664 const AVFrame *picture, int *got_packet)
666 int xerr, i, ret, user_packet = !!pkt->data;
668 struct xvid_context *x = avctx->priv_data;
669 AVFrame *p = avctx->coded_frame;
670 int mb_width = (avctx->width + 15) / 16;
671 int mb_height = (avctx->height + 15) / 16;
673 xvid_enc_frame_t xvid_enc_frame = { 0 };
674 xvid_enc_stats_t xvid_enc_stats = { 0 };
676 if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0)
679 /* Start setting up the frame */
680 xvid_enc_frame.version = XVID_VERSION;
681 xvid_enc_stats.version = XVID_VERSION;
683 /* Let Xvid know where to put the frame. */
684 xvid_enc_frame.bitstream = pkt->data;
685 xvid_enc_frame.length = pkt->size;
687 /* Initialize input image fields */
688 if( avctx->pix_fmt != AV_PIX_FMT_YUV420P ) {
689 av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
693 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
695 for( i = 0; i < 4; i++ ) {
696 xvid_enc_frame.input.plane[i] = picture->data[i];
697 xvid_enc_frame.input.stride[i] = picture->linesize[i];
701 xvid_enc_frame.vop_flags = x->vop_flags;
702 xvid_enc_frame.vol_flags = x->vol_flags;
703 xvid_enc_frame.motion = x->me_flags;
704 xvid_enc_frame.type =
705 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
706 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
707 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
710 /* Pixel aspect ratio setting */
711 if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
712 avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
713 av_log(avctx, AV_LOG_WARNING,
714 "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
715 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
716 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
717 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
719 xvid_enc_frame.par = XVID_PAR_EXT;
720 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
721 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
724 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
725 else xvid_enc_frame.quant = 0;
728 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
729 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
732 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
733 &xvid_enc_frame, &xvid_enc_stats);
735 /* Two-pass log buffer swapping */
736 avctx->stats_out = NULL;
737 if( x->twopassbuffer ) {
738 tmp = x->old_twopassbuffer;
739 x->old_twopassbuffer = x->twopassbuffer;
740 x->twopassbuffer = tmp;
741 x->twopassbuffer[0] = 0;
742 if( x->old_twopassbuffer[0] != 0 ) {
743 avctx->stats_out = x->old_twopassbuffer;
750 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
751 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
752 p->pict_type = AV_PICTURE_TYPE_P;
753 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
754 p->pict_type = AV_PICTURE_TYPE_B;
755 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
756 p->pict_type = AV_PICTURE_TYPE_S;
758 p->pict_type = AV_PICTURE_TYPE_I;
759 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
761 pkt->flags |= AV_PKT_FLAG_KEY;
762 if( x->quicktime_format )
763 return xvid_strip_vol_header(avctx, pkt,
764 xvid_enc_stats.hlength, xerr);
776 av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
781 static av_cold int xvid_encode_close(AVCodecContext *avctx) {
782 struct xvid_context *x = avctx->priv_data;
784 if(x->encoder_handle)
785 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
786 x->encoder_handle = NULL;
788 av_freep(&avctx->extradata);
789 if( x->twopassbuffer != NULL ) {
790 av_freep(&x->twopassbuffer);
791 av_freep(&x->old_twopassbuffer);
792 avctx->stats_out = NULL;
794 if (x->twopassfd>=0) {
795 unlink(x->twopassfile);
799 av_freep(&x->twopassfile);
800 av_freep(&x->intra_matrix);
801 av_freep(&x->inter_matrix);
806 #define OFFSET(x) offsetof(struct xvid_context, x)
807 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
808 static const AVOption options[] = {
809 { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
810 { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
811 { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
812 { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
813 { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
814 { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
815 { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
819 static const AVClass xvid_class = {
820 .class_name = "libxvid",
821 .item_name = av_default_item_name,
823 .version = LIBAVUTIL_VERSION_INT,
826 AVCodec ff_libxvid_encoder = {
828 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
829 .type = AVMEDIA_TYPE_VIDEO,
830 .id = AV_CODEC_ID_MPEG4,
831 .priv_data_size = sizeof(struct xvid_context),
832 .init = xvid_encode_init,
833 .encode2 = xvid_encode_frame,
834 .close = xvid_encode_close,
835 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
836 .priv_class = &xvid_class,