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.
52 void *encoder_handle; /**< Handle for Xvid encoder */
53 int xsize; /**< Frame x size */
54 int ysize; /**< Frame y size */
55 int vop_flags; /**< VOP flags for Xvid encoder */
56 int vol_flags; /**< VOL flags for Xvid encoder */
57 int me_flags; /**< Motion Estimation flags */
58 int qscale; /**< Do we use constant scale? */
59 int quicktime_format; /**< Are we in a QT-based format? */
60 char *twopassbuffer; /**< Character buffer for two-pass */
61 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
62 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. */
73 * Structure for the private first-pass plugin.
75 struct xvid_ff_pass1 {
76 int version; /**< Xvid version */
77 struct xvid_context *context; /**< Pointer to private context */
80 static int xvid_encode_close(AVCodecContext *avctx);
83 * Xvid 2-Pass Kludge Section
85 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
86 * this section spends time replacing the first pass plugin so we can write
87 * statistic information as libavcodec requests in. We have another kludge
88 * that allows us to pass data to the second pass in Xvid without a custom
89 * rate-control plugin.
93 * Initialize the two-pass plugin and context.
95 * @param param Input construction parameter structure
96 * @param handle Private context handle
97 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
99 static int xvid_ff_2pass_create(xvid_plg_create_t * param,
101 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
102 char *log = x->context->twopassbuffer;
104 /* Do a quick bounds check */
106 return XVID_ERR_FAIL;
108 /* We use snprintf() */
109 /* This is because we can safely prevent a buffer overflow */
111 snprintf(log, BUFFER_REMAINING(log),
112 "# ffmpeg 2-pass log file, using xvid codec\n");
113 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
114 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
115 XVID_VERSION_MAJOR(XVID_VERSION),
116 XVID_VERSION_MINOR(XVID_VERSION),
117 XVID_VERSION_PATCH(XVID_VERSION));
119 *handle = x->context;
124 * Destroy the two-pass plugin context.
126 * @param ref Context pointer for the plugin
127 * @param param Destrooy context
128 * @return Returns 0, success guaranteed
130 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
131 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 != NULL )
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) {
149 int motion_replacements;
152 /* Nothing to do here, result is changed too much */
153 if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
156 /* We can implement a 'turbo' first pass mode here */
160 motion_remove = ~XVID_ME_CHROMA_PVOP &
161 ~XVID_ME_CHROMA_BVOP &
162 ~XVID_ME_EXTSEARCH16 &
163 ~XVID_ME_ADVANCEDDIAMOND16;
164 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
165 XVID_ME_SKIP_DELTASEARCH |
166 XVID_ME_FASTREFINE16 |
167 XVID_ME_BFRAME_EARLYSTOP;
168 vop_remove = ~XVID_VOP_MODEDECISION_RD &
169 ~XVID_VOP_FAST_MODEDECISION_RD &
170 ~XVID_VOP_TRELLISQUANT &
174 param->vol_flags &= ~XVID_VOL_GMC;
175 param->vop_flags &= vop_remove;
176 param->motion_flags &= motion_remove;
177 param->motion_flags |= motion_replacements;
183 * Capture statistic data and write it during first pass.
185 * @param ref Context pointer for the plugin
186 * @param param Statistic data
187 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
189 static int xvid_ff_2pass_after(struct xvid_context *ref,
190 xvid_plg_data_t *param) {
191 char *log = ref->twopassbuffer;
192 const char *frame_types = " ipbs";
195 /* Quick bounds check */
197 return XVID_ERR_FAIL;
199 /* Convert the type given to us into a character */
200 if( param->type < 5 && param->type > 0 ) {
201 frame_type = frame_types[param->type];
203 return XVID_ERR_FAIL;
206 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
207 "%c %d %d %d %d %d %d\n",
208 frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
209 param->stats.ublks, param->stats.length, param->stats.hlength);
215 * Dispatch function for our custom plugin.
216 * This handles the dispatch for the Xvid plugin. It passes data
217 * on to other functions for actual processing.
219 * @param ref Context pointer for the plugin
220 * @param cmd The task given for us to complete
221 * @param p1 First parameter (varies)
222 * @param p2 Second parameter (varies)
223 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
225 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
232 case XVID_PLG_BEFORE:
233 return xvid_ff_2pass_before(ref, p1);
235 case XVID_PLG_CREATE:
236 return xvid_ff_2pass_create(p1, p2);
239 return xvid_ff_2pass_after(ref, p1);
241 case XVID_PLG_DESTROY:
242 return xvid_ff_2pass_destroy(ref, p1);
245 return XVID_ERR_FAIL;
250 * Routine to create a global VO/VOL header for MP4 container.
251 * What we do here is extract the header from the Xvid bitstream
252 * as it is encoded. We also strip the repeated headers from the
253 * bitstream when a global header is requested for MPEG-4 ISO
256 * @param avctx AVCodecContext pointer to context
257 * @param frame Pointer to encoded frame data
258 * @param header_len Length of header to search
259 * @param frame_len Length of encoded frame data
260 * @return Returns new length of frame data
262 static int xvid_strip_vol_header(AVCodecContext *avctx,
264 unsigned int header_len,
265 unsigned int frame_len) {
268 for( i = 0; i < header_len - 3; i++ ) {
269 if( pkt->data[i] == 0x00 &&
270 pkt->data[i+1] == 0x00 &&
271 pkt->data[i+2] == 0x01 &&
272 pkt->data[i+3] == 0xB6 ) {
279 /* We need to store the header, so extract it */
280 if( avctx->extradata == NULL ) {
281 avctx->extradata = av_malloc(vo_len);
282 memcpy(avctx->extradata, pkt->data, vo_len);
283 avctx->extradata_size = vo_len;
285 /* Less dangerous now, memmove properly copies the two
286 chunks of overlapping data */
287 memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
288 pkt->size = frame_len - vo_len;
294 * Routine to correct a possibly erroneous framerate being fed to us.
295 * Xvid currently chokes on framerates where the ticks per frame is
296 * extremely large. This function works to correct problems in this area
297 * by estimating a new framerate and taking the simpler fraction of
300 * @param avctx Context that contains the framerate to correct.
302 static void xvid_correct_framerate(AVCodecContext *avctx)
305 int est_frate, est_fbase;
309 frate = avctx->time_base.den;
310 fbase = avctx->time_base.num;
312 gcd = av_gcd(frate, fbase);
318 if( frate <= 65000 && fbase <= 65000 ) {
319 avctx->time_base.den = frate;
320 avctx->time_base.num = fbase;
324 fps = (float)frate / (float)fbase;
325 est_fps = roundf(fps * 1000.0) / 1000.0;
327 est_frate = (int)est_fps;
328 if( est_fps > (int)est_fps ) {
329 est_frate = (est_frate + 1) * 1000;
330 est_fbase = (int)roundf((float)est_frate / est_fps);
334 gcd = av_gcd(est_frate, est_fbase);
340 if( fbase > est_fbase ) {
341 avctx->time_base.den = est_frate;
342 avctx->time_base.num = est_fbase;
343 av_log(avctx, AV_LOG_DEBUG,
344 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
345 est_fps, (((est_fps - fps)/fps) * 100.0));
347 avctx->time_base.den = frate;
348 avctx->time_base.num = fbase;
352 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[4];
371 /* Bring in VOP flags from ffmpeg command-line */
372 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
373 if( xvid_flags & CODEC_FLAG_4MV )
374 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
376 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
377 if( xvid_flags & CODEC_FLAG_AC_PRED )
378 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
379 if( xvid_flags & CODEC_FLAG_GRAY )
380 x->vop_flags |= XVID_VOP_GREYSCALE;
382 /* Decide which ME quality setting to use */
384 switch( avctx->me_method ) {
385 case ME_FULL: /* Quality 6 */
386 x->me_flags |= XVID_ME_EXTSEARCH16
387 | XVID_ME_EXTSEARCH8;
389 case ME_EPZS: /* Quality 4 */
390 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
391 | XVID_ME_HALFPELREFINE8
392 | XVID_ME_CHROMA_PVOP
393 | XVID_ME_CHROMA_BVOP;
395 case ME_LOG: /* Quality 2 */
398 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
399 | XVID_ME_HALFPELREFINE16;
401 case ME_ZERO: /* Quality 0 */
406 /* Decide how we should decide blocks */
407 switch( avctx->mb_decision ) {
409 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
410 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
411 | XVID_ME_QUARTERPELREFINE8_RD
412 | XVID_ME_EXTSEARCH_RD
413 | XVID_ME_CHECKPREDICTION_RD;
415 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
416 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
417 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
418 | XVID_ME_QUARTERPELREFINE16_RD;
424 /* Bring in VOL flags from ffmpeg command-line */
426 if( xvid_flags & CODEC_FLAG_GMC ) {
427 x->vol_flags |= XVID_VOL_GMC;
428 x->me_flags |= XVID_ME_GME_REFINE;
430 if( xvid_flags & CODEC_FLAG_QPEL ) {
431 x->vol_flags |= XVID_VOL_QUARTERPEL;
432 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
433 if( x->vop_flags & XVID_VOP_INTER4V )
434 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
437 xvid_gbl_init.version = XVID_VERSION;
438 xvid_gbl_init.debug = 0;
441 /* Xvid's PPC support is borked, use libavcodec to detect */
443 if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
444 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
447 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
449 /* Xvid can detect on x86 */
450 xvid_gbl_init.cpu_flags = 0;
454 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
456 /* Create the encoder reference */
457 xvid_enc_create.version = XVID_VERSION;
459 /* Store the desired frame size */
460 xvid_enc_create.width = x->xsize = avctx->width;
461 xvid_enc_create.height = x->ysize = avctx->height;
463 /* Xvid can determine the proper profile to use */
464 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
466 /* We don't use zones */
467 xvid_enc_create.zones = NULL;
468 xvid_enc_create.num_zones = 0;
470 xvid_enc_create.num_threads = avctx->thread_count;
472 xvid_enc_create.plugins = plugins;
473 xvid_enc_create.num_plugins = 0;
475 /* Initialize Buffers */
476 x->twopassbuffer = NULL;
477 x->old_twopassbuffer = NULL;
478 x->twopassfile = NULL;
480 if( xvid_flags & CODEC_FLAG_PASS1 ) {
481 rc2pass1.version = XVID_VERSION;
482 rc2pass1.context = x;
483 x->twopassbuffer = av_malloc(BUFFER_SIZE);
484 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
485 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
486 av_log(avctx, AV_LOG_ERROR,
487 "Xvid: Cannot allocate 2-pass log buffers\n");
490 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
492 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
493 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
494 xvid_enc_create.num_plugins++;
495 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
496 rc2pass2.version = XVID_VERSION;
497 rc2pass2.bitrate = avctx->bit_rate;
499 fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx);
501 av_log(avctx, AV_LOG_ERROR,
502 "Xvid: Cannot write 2-pass pipe\n");
507 if( avctx->stats_in == NULL ) {
508 av_log(avctx, AV_LOG_ERROR,
509 "Xvid: No 2-pass information loaded for second pass\n");
513 if( strlen(avctx->stats_in) >
514 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
515 av_log(avctx, AV_LOG_ERROR,
516 "Xvid: Cannot write to 2-pass pipe\n");
520 rc2pass2.filename = x->twopassfile;
521 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
522 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
523 xvid_enc_create.num_plugins++;
524 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
525 /* Single Pass Bitrate Control! */
526 single.version = XVID_VERSION;
527 single.bitrate = avctx->bit_rate;
529 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
530 plugins[xvid_enc_create.num_plugins].param = &single;
531 xvid_enc_create.num_plugins++;
534 if ( avctx->lumi_masking != 0.0)
537 /* Luminance Masking */
539 masking_l.method = 0;
540 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
542 /* The old behavior is that when avctx->lumi_masking is specified,
543 * plugins[...].param = NULL. Trying to keep the old behavior here. */
544 plugins[xvid_enc_create.num_plugins].param = avctx->lumi_masking ? NULL : &masking_l ;
545 xvid_enc_create.num_plugins++;
549 if( x->variance_aq ) {
550 masking_v.method = 1;
551 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
552 plugins[xvid_enc_create.num_plugins].param = &masking_v ;
553 xvid_enc_create.num_plugins++;
556 if( x->lumi_aq && x->variance_aq )
557 av_log(avctx, AV_LOG_INFO,
558 "Both lumi_aq and variance_aq are enabled. The resulting quality"
559 "will be the worse one of the two effects made by the AQ.\n");
563 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
564 ssim.b_printstat = ( x->ssim == 2 );
565 ssim.acc = x->ssim_acc;
566 ssim.cpu_flags = xvid_gbl_init.cpu_flags;
567 ssim.b_visualize = 0;
568 plugins[xvid_enc_create.num_plugins].param = &ssim;
569 xvid_enc_create.num_plugins++;
572 /* Frame Rate and Key Frames */
573 xvid_correct_framerate(avctx);
574 xvid_enc_create.fincr = avctx->time_base.num;
575 xvid_enc_create.fbase = avctx->time_base.den;
576 if( avctx->gop_size > 0 )
577 xvid_enc_create.max_key_interval = avctx->gop_size;
579 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
582 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
585 xvid_enc_create.min_quant[0] = avctx->qmin;
586 xvid_enc_create.min_quant[1] = avctx->qmin;
587 xvid_enc_create.min_quant[2] = avctx->qmin;
588 xvid_enc_create.max_quant[0] = avctx->qmax;
589 xvid_enc_create.max_quant[1] = avctx->qmax;
590 xvid_enc_create.max_quant[2] = avctx->qmax;
593 x->intra_matrix = x->inter_matrix = NULL;
594 if( avctx->mpeg_quant )
595 x->vol_flags |= XVID_VOL_MPEGQUANT;
596 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
597 x->vol_flags |= XVID_VOL_MPEGQUANT;
599 if( avctx->intra_matrix ) {
600 intra = avctx->intra_matrix;
601 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
604 if( avctx->inter_matrix ) {
605 inter = avctx->inter_matrix;
606 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
610 for( i = 0; i < 64; i++ ) {
612 x->intra_matrix[i] = (unsigned char)intra[i];
614 x->inter_matrix[i] = (unsigned char)inter[i];
619 xvid_enc_create.frame_drop_ratio = 0;
620 xvid_enc_create.global = 0;
621 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
622 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
624 /* Determines which codec mode we are operating in */
625 avctx->extradata = NULL;
626 avctx->extradata_size = 0;
627 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
628 /* In this case, we are claiming to be MPEG4 */
629 x->quicktime_format = 1;
630 avctx->codec_id = AV_CODEC_ID_MPEG4;
632 /* We are claiming to be Xvid */
633 x->quicktime_format = 0;
634 if(!avctx->codec_tag)
635 avctx->codec_tag = AV_RL32("xvid");
639 xvid_enc_create.max_bframes = avctx->max_b_frames;
640 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
641 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
642 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
644 av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
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;
654 avctx->coded_frame = av_frame_alloc();
655 if (!avctx->coded_frame)
656 return AVERROR(ENOMEM);
660 xvid_encode_close(avctx);
664 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
665 const AVFrame *picture, int *got_packet)
667 int xerr, i, ret, user_packet = !!pkt->data;
669 struct xvid_context *x = avctx->priv_data;
670 AVFrame *p = avctx->coded_frame;
671 int mb_width = (avctx->width + 15) / 16;
672 int mb_height = (avctx->height + 15) / 16;
674 xvid_enc_frame_t xvid_enc_frame = { 0 };
675 xvid_enc_stats_t xvid_enc_stats = { 0 };
677 if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0)
680 /* Start setting up the frame */
681 xvid_enc_frame.version = XVID_VERSION;
682 xvid_enc_stats.version = XVID_VERSION;
684 /* Let Xvid know where to put the frame. */
685 xvid_enc_frame.bitstream = pkt->data;
686 xvid_enc_frame.length = pkt->size;
688 /* Initialize input image fields */
689 if( avctx->pix_fmt != AV_PIX_FMT_YUV420P ) {
690 av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
694 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
696 for( i = 0; i < 4; i++ ) {
697 xvid_enc_frame.input.plane[i] = picture->data[i];
698 xvid_enc_frame.input.stride[i] = picture->linesize[i];
702 xvid_enc_frame.vop_flags = x->vop_flags;
703 xvid_enc_frame.vol_flags = x->vol_flags;
704 xvid_enc_frame.motion = x->me_flags;
705 xvid_enc_frame.type =
706 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
707 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
708 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
711 /* Pixel aspect ratio setting */
712 if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
713 avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
714 av_log(avctx, AV_LOG_WARNING,
715 "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
716 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
717 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
718 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
720 xvid_enc_frame.par = XVID_PAR_EXT;
721 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
722 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
725 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
726 else xvid_enc_frame.quant = 0;
729 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
730 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
733 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
734 &xvid_enc_frame, &xvid_enc_stats);
736 /* Two-pass log buffer swapping */
737 avctx->stats_out = NULL;
738 if( x->twopassbuffer ) {
739 tmp = x->old_twopassbuffer;
740 x->old_twopassbuffer = x->twopassbuffer;
741 x->twopassbuffer = tmp;
742 x->twopassbuffer[0] = 0;
743 if( x->old_twopassbuffer[0] != 0 ) {
744 avctx->stats_out = x->old_twopassbuffer;
751 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
752 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
753 p->pict_type = AV_PICTURE_TYPE_P;
754 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
755 p->pict_type = AV_PICTURE_TYPE_B;
756 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
757 p->pict_type = AV_PICTURE_TYPE_S;
759 p->pict_type = AV_PICTURE_TYPE_I;
760 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
762 pkt->flags |= AV_PKT_FLAG_KEY;
763 if( x->quicktime_format )
764 return xvid_strip_vol_header(avctx, pkt,
765 xvid_enc_stats.hlength, xerr);
777 av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
782 static av_cold int xvid_encode_close(AVCodecContext *avctx) {
783 struct xvid_context *x = avctx->priv_data;
785 if(x->encoder_handle)
786 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
787 x->encoder_handle = NULL;
789 av_freep(&avctx->extradata);
790 if( x->twopassbuffer != NULL ) {
791 av_freep(&x->twopassbuffer);
792 av_freep(&x->old_twopassbuffer);
793 avctx->stats_out = NULL;
795 if (x->twopassfd>=0) {
796 unlink(x->twopassfile);
800 av_freep(&x->twopassfile);
801 av_freep(&x->intra_matrix);
802 av_freep(&x->inter_matrix);
807 #define OFFSET(x) offsetof(struct xvid_context, x)
808 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
809 static const AVOption options[] = {
810 { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
811 { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
812 { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
813 { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
814 { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
815 { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
816 { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
820 static const AVClass xvid_class = {
821 .class_name = "libxvid",
822 .item_name = av_default_item_name,
824 .version = LIBAVUTIL_VERSION_INT,
827 AVCodec ff_libxvid_encoder = {
829 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
830 .type = AVMEDIA_TYPE_VIDEO,
831 .id = AV_CODEC_ID_MPEG4,
832 .priv_data_size = sizeof(struct xvid_context),
833 .init = xvid_encode_init,
834 .encode2 = xvid_encode_frame,
835 .close = xvid_encode_close,
836 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
837 .priv_class = &xvid_class,