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. */
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 */
81 static int xvid_encode_close(AVCodecContext *avctx);
84 * Xvid 2-Pass Kludge Section
86 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
87 * this section spends time replacing the first pass plugin so we can write
88 * statistic information as libavcodec requests in. We have another kludge
89 * that allows us to pass data to the second pass in Xvid without a custom
90 * rate-control plugin.
94 * Initialize the two-pass plugin and context.
96 * @param param Input construction parameter structure
97 * @param handle Private context handle
98 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
100 static int xvid_ff_2pass_create(xvid_plg_create_t * param,
102 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
103 char *log = x->context->twopassbuffer;
105 /* Do a quick bounds check */
107 return XVID_ERR_FAIL;
109 /* We use snprintf() */
110 /* This is because we can safely prevent a buffer overflow */
112 snprintf(log, BUFFER_REMAINING(log),
113 "# ffmpeg 2-pass log file, using xvid codec\n");
114 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
115 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
116 XVID_VERSION_MAJOR(XVID_VERSION),
117 XVID_VERSION_MINOR(XVID_VERSION),
118 XVID_VERSION_PATCH(XVID_VERSION));
120 *handle = x->context;
125 * Destroy the two-pass plugin context.
127 * @param ref Context pointer for the plugin
128 * @param param Destrooy context
129 * @return Returns 0, success guaranteed
131 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
132 xvid_plg_destroy_t *param) {
133 /* Currently cannot think of anything to do on destruction */
134 /* Still, the framework should be here for reference/use */
135 if( ref->twopassbuffer != NULL )
136 ref->twopassbuffer[0] = 0;
141 * Enable fast encode mode during the first pass.
143 * @param ref Context pointer for the plugin
144 * @param param Frame data
145 * @return Returns 0, success guaranteed
147 static int xvid_ff_2pass_before(struct xvid_context *ref,
148 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) {
192 char *log = ref->twopassbuffer;
193 const char *frame_types = " ipbs";
196 /* Quick bounds check */
198 return XVID_ERR_FAIL;
200 /* Convert the type given to us into a character */
201 if( param->type < 5 && param->type > 0 ) {
202 frame_type = frame_types[param->type];
204 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, param->stats.mblks,
210 param->stats.ublks, param->stats.length, param->stats.hlength);
216 * Dispatch function for our custom plugin.
217 * This handles the dispatch for the Xvid plugin. It passes data
218 * on to other functions for actual processing.
220 * @param ref Context pointer for the plugin
221 * @param cmd The task given for us to complete
222 * @param p1 First parameter (varies)
223 * @param p2 Second parameter (varies)
224 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
226 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);
236 case XVID_PLG_CREATE:
237 return xvid_ff_2pass_create(p1, p2);
240 return xvid_ff_2pass_after(ref, p1);
242 case XVID_PLG_DESTROY:
243 return xvid_ff_2pass_destroy(ref, p1);
246 return XVID_ERR_FAIL;
251 * Routine to create a global VO/VOL header for MP4 container.
252 * What we do here is extract the header from the Xvid bitstream
253 * as it is encoded. We also strip the repeated headers from the
254 * bitstream when a global header is requested for MPEG-4 ISO
257 * @param avctx AVCodecContext pointer to context
258 * @param frame Pointer to encoded frame data
259 * @param header_len Length of header to search
260 * @param frame_len Length of encoded frame data
261 * @return Returns new length of frame data
263 static int xvid_strip_vol_header(AVCodecContext *avctx,
265 unsigned int header_len,
266 unsigned int frame_len) {
269 for( i = 0; i < header_len - 3; i++ ) {
270 if( pkt->data[i] == 0x00 &&
271 pkt->data[i+1] == 0x00 &&
272 pkt->data[i+2] == 0x01 &&
273 pkt->data[i+3] == 0xB6 ) {
280 /* We need to store the header, so extract it */
281 if( avctx->extradata == NULL ) {
282 avctx->extradata = av_malloc(vo_len);
283 memcpy(avctx->extradata, pkt->data, vo_len);
284 avctx->extradata_size = vo_len;
286 /* Less dangerous now, memmove properly copies the two
287 chunks of overlapping data */
288 memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
289 pkt->size = frame_len - vo_len;
295 * Routine to correct a possibly erroneous framerate being fed to us.
296 * Xvid currently chokes on framerates where the ticks per frame is
297 * extremely large. This function works to correct problems in this area
298 * by estimating a new framerate and taking the simpler fraction of
301 * @param avctx Context that contains the framerate to correct.
303 static void xvid_correct_framerate(AVCodecContext *avctx)
306 int est_frate, est_fbase;
310 frate = avctx->time_base.den;
311 fbase = avctx->time_base.num;
313 gcd = av_gcd(frate, fbase);
319 if( frate <= 65000 && fbase <= 65000 ) {
320 avctx->time_base.den = frate;
321 avctx->time_base.num = fbase;
325 fps = (float)frate / (float)fbase;
326 est_fps = roundf(fps * 1000.0) / 1000.0;
328 est_frate = (int)est_fps;
329 if( est_fps > (int)est_fps ) {
330 est_frate = (est_frate + 1) * 1000;
331 est_fbase = (int)roundf((float)est_frate / est_fps);
335 gcd = av_gcd(est_frate, est_fbase);
341 if( fbase > est_fbase ) {
342 avctx->time_base.den = est_frate;
343 avctx->time_base.num = est_fbase;
344 av_log(avctx, AV_LOG_DEBUG,
345 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
346 est_fps, (((est_fps - fps)/fps) * 100.0));
348 avctx->time_base.den = frate;
349 avctx->time_base.num = fbase;
353 static av_cold int xvid_encode_init(AVCodecContext *avctx) {
355 int xvid_flags = avctx->flags;
356 struct xvid_context *x = avctx->priv_data;
357 uint16_t *intra, *inter;
360 xvid_plugin_single_t single = { 0 };
361 struct xvid_ff_pass1 rc2pass1 = { 0 };
362 xvid_plugin_2pass2_t rc2pass2 = { 0 };
363 xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
364 xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
365 xvid_plugin_ssim_t ssim = { 0 };
366 xvid_gbl_init_t xvid_gbl_init = { 0 };
367 xvid_enc_create_t xvid_enc_create = { 0 };
368 xvid_enc_plugin_t plugins[4];
372 /* Bring in VOP flags from ffmpeg command-line */
373 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
374 if( xvid_flags & CODEC_FLAG_4MV )
375 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
377 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
378 if( xvid_flags & CODEC_FLAG_AC_PRED )
379 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
380 if( xvid_flags & CODEC_FLAG_GRAY )
381 x->vop_flags |= XVID_VOP_GREYSCALE;
383 /* Decide which ME quality setting to use */
385 switch( avctx->me_method ) {
386 case ME_FULL: /* Quality 6 */
387 x->me_flags |= XVID_ME_EXTSEARCH16
388 | XVID_ME_EXTSEARCH8;
390 case ME_EPZS: /* Quality 4 */
391 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
392 | XVID_ME_HALFPELREFINE8
393 | XVID_ME_CHROMA_PVOP
394 | XVID_ME_CHROMA_BVOP;
396 case ME_LOG: /* Quality 2 */
399 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
400 | XVID_ME_HALFPELREFINE16;
402 case ME_ZERO: /* Quality 0 */
407 /* Decide how we should decide blocks */
408 switch( avctx->mb_decision ) {
410 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
411 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
412 | XVID_ME_QUARTERPELREFINE8_RD
413 | XVID_ME_EXTSEARCH_RD
414 | XVID_ME_CHECKPREDICTION_RD;
416 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
417 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
418 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
419 | XVID_ME_QUARTERPELREFINE16_RD;
425 /* Bring in VOL flags from ffmpeg command-line */
427 if (avctx->flags & CODEC_FLAG_GMC)
433 x->vol_flags |= XVID_VOL_GMC;
434 x->me_flags |= XVID_ME_GME_REFINE;
436 if( xvid_flags & CODEC_FLAG_QPEL ) {
437 x->vol_flags |= XVID_VOL_QUARTERPEL;
438 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
439 if( x->vop_flags & XVID_VOP_INTER4V )
440 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
443 xvid_gbl_init.version = XVID_VERSION;
444 xvid_gbl_init.debug = 0;
447 /* Xvid's PPC support is borked, use libavcodec to detect */
449 if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
450 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
453 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
455 /* Xvid can detect on x86 */
456 xvid_gbl_init.cpu_flags = 0;
460 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
462 /* Create the encoder reference */
463 xvid_enc_create.version = XVID_VERSION;
465 /* Store the desired frame size */
466 xvid_enc_create.width = x->xsize = avctx->width;
467 xvid_enc_create.height = x->ysize = avctx->height;
469 /* Xvid can determine the proper profile to use */
470 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
472 /* We don't use zones */
473 xvid_enc_create.zones = NULL;
474 xvid_enc_create.num_zones = 0;
476 xvid_enc_create.num_threads = avctx->thread_count;
478 xvid_enc_create.plugins = plugins;
479 xvid_enc_create.num_plugins = 0;
481 /* Initialize Buffers */
482 x->twopassbuffer = NULL;
483 x->old_twopassbuffer = NULL;
484 x->twopassfile = NULL;
486 if( xvid_flags & CODEC_FLAG_PASS1 ) {
487 rc2pass1.version = XVID_VERSION;
488 rc2pass1.context = x;
489 x->twopassbuffer = av_malloc(BUFFER_SIZE);
490 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
491 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
492 av_log(avctx, AV_LOG_ERROR,
493 "Xvid: Cannot allocate 2-pass log buffers\n");
496 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
498 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
499 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
500 xvid_enc_create.num_plugins++;
501 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
502 rc2pass2.version = XVID_VERSION;
503 rc2pass2.bitrate = avctx->bit_rate;
505 fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx);
507 av_log(avctx, AV_LOG_ERROR,
508 "Xvid: Cannot write 2-pass pipe\n");
513 if( avctx->stats_in == NULL ) {
514 av_log(avctx, AV_LOG_ERROR,
515 "Xvid: No 2-pass information loaded for second pass\n");
519 if( strlen(avctx->stats_in) >
520 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
521 av_log(avctx, AV_LOG_ERROR,
522 "Xvid: Cannot write to 2-pass pipe\n");
526 rc2pass2.filename = x->twopassfile;
527 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
528 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
529 xvid_enc_create.num_plugins++;
530 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
531 /* Single Pass Bitrate Control! */
532 single.version = XVID_VERSION;
533 single.bitrate = avctx->bit_rate;
535 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
536 plugins[xvid_enc_create.num_plugins].param = &single;
537 xvid_enc_create.num_plugins++;
540 if (avctx->lumi_masking != 0.0)
543 /* Luminance Masking */
545 masking_l.method = 0;
546 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
548 /* The old behavior is that when avctx->lumi_masking is specified,
549 * plugins[...].param = NULL. Trying to keep the old behavior here. */
550 plugins[xvid_enc_create.num_plugins].param = avctx->lumi_masking ? NULL
552 xvid_enc_create.num_plugins++;
556 if (x->variance_aq) {
557 masking_v.method = 1;
558 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
559 plugins[xvid_enc_create.num_plugins].param = &masking_v;
560 xvid_enc_create.num_plugins++;
563 if( x->lumi_aq && x->variance_aq )
564 av_log(avctx, AV_LOG_INFO,
565 "Both lumi_aq and variance_aq are enabled. The resulting quality"
566 "will be the worse one of the two effects made by the AQ.\n");
570 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
571 ssim.b_printstat = x->ssim == 2;
572 ssim.acc = x->ssim_acc;
573 ssim.cpu_flags = xvid_gbl_init.cpu_flags;
574 ssim.b_visualize = 0;
575 plugins[xvid_enc_create.num_plugins].param = &ssim;
576 xvid_enc_create.num_plugins++;
579 /* Frame Rate and Key Frames */
580 xvid_correct_framerate(avctx);
581 xvid_enc_create.fincr = avctx->time_base.num;
582 xvid_enc_create.fbase = avctx->time_base.den;
583 if( avctx->gop_size > 0 )
584 xvid_enc_create.max_key_interval = avctx->gop_size;
586 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
589 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
592 xvid_enc_create.min_quant[0] = avctx->qmin;
593 xvid_enc_create.min_quant[1] = avctx->qmin;
594 xvid_enc_create.min_quant[2] = avctx->qmin;
595 xvid_enc_create.max_quant[0] = avctx->qmax;
596 xvid_enc_create.max_quant[1] = avctx->qmax;
597 xvid_enc_create.max_quant[2] = avctx->qmax;
600 x->intra_matrix = x->inter_matrix = NULL;
601 if( avctx->mpeg_quant )
602 x->vol_flags |= XVID_VOL_MPEGQUANT;
603 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
604 x->vol_flags |= XVID_VOL_MPEGQUANT;
606 if( avctx->intra_matrix ) {
607 intra = avctx->intra_matrix;
608 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
611 if( avctx->inter_matrix ) {
612 inter = avctx->inter_matrix;
613 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
617 for( i = 0; i < 64; i++ ) {
619 x->intra_matrix[i] = (unsigned char)intra[i];
621 x->inter_matrix[i] = (unsigned char)inter[i];
626 xvid_enc_create.frame_drop_ratio = 0;
627 xvid_enc_create.global = 0;
628 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
629 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
631 /* Determines which codec mode we are operating in */
632 avctx->extradata = NULL;
633 avctx->extradata_size = 0;
634 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
635 /* In this case, we are claiming to be MPEG4 */
636 x->quicktime_format = 1;
637 avctx->codec_id = AV_CODEC_ID_MPEG4;
639 /* We are claiming to be Xvid */
640 x->quicktime_format = 0;
641 if(!avctx->codec_tag)
642 avctx->codec_tag = AV_RL32("xvid");
646 xvid_enc_create.max_bframes = avctx->max_b_frames;
647 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
648 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
649 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
651 av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
653 /* Create encoder context */
654 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
656 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
660 x->encoder_handle = xvid_enc_create.handle;
661 avctx->coded_frame = av_frame_alloc();
662 if (!avctx->coded_frame)
663 return AVERROR(ENOMEM);
667 xvid_encode_close(avctx);
671 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
672 const AVFrame *picture, int *got_packet)
674 int xerr, i, ret, user_packet = !!pkt->data;
676 struct xvid_context *x = avctx->priv_data;
677 AVFrame *p = avctx->coded_frame;
678 int mb_width = (avctx->width + 15) / 16;
679 int mb_height = (avctx->height + 15) / 16;
681 xvid_enc_frame_t xvid_enc_frame = { 0 };
682 xvid_enc_stats_t xvid_enc_stats = { 0 };
684 if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0)
687 /* Start setting up the frame */
688 xvid_enc_frame.version = XVID_VERSION;
689 xvid_enc_stats.version = XVID_VERSION;
691 /* Let Xvid know where to put the frame. */
692 xvid_enc_frame.bitstream = pkt->data;
693 xvid_enc_frame.length = pkt->size;
695 /* Initialize input image fields */
696 if( avctx->pix_fmt != AV_PIX_FMT_YUV420P ) {
697 av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
698 return AVERROR(EINVAL);
701 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
703 for( i = 0; i < 4; i++ ) {
704 xvid_enc_frame.input.plane[i] = picture->data[i];
705 xvid_enc_frame.input.stride[i] = picture->linesize[i];
709 xvid_enc_frame.vop_flags = x->vop_flags;
710 xvid_enc_frame.vol_flags = x->vol_flags;
711 xvid_enc_frame.motion = x->me_flags;
712 xvid_enc_frame.type =
713 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
714 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
715 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
718 /* Pixel aspect ratio setting */
719 if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
720 avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
721 av_log(avctx, AV_LOG_WARNING,
722 "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
723 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
724 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
725 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
727 xvid_enc_frame.par = XVID_PAR_EXT;
728 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
729 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
732 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
733 else xvid_enc_frame.quant = 0;
736 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
737 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
740 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
741 &xvid_enc_frame, &xvid_enc_stats);
743 /* Two-pass log buffer swapping */
744 avctx->stats_out = NULL;
745 if( x->twopassbuffer ) {
746 tmp = x->old_twopassbuffer;
747 x->old_twopassbuffer = x->twopassbuffer;
748 x->twopassbuffer = tmp;
749 x->twopassbuffer[0] = 0;
750 if( x->old_twopassbuffer[0] != 0 ) {
751 avctx->stats_out = x->old_twopassbuffer;
758 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
759 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
760 p->pict_type = AV_PICTURE_TYPE_P;
761 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
762 p->pict_type = AV_PICTURE_TYPE_B;
763 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
764 p->pict_type = AV_PICTURE_TYPE_S;
766 p->pict_type = AV_PICTURE_TYPE_I;
767 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
769 pkt->flags |= AV_PKT_FLAG_KEY;
770 if( x->quicktime_format )
771 return xvid_strip_vol_header(avctx, pkt,
772 xvid_enc_stats.hlength, xerr);
784 av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
785 return AVERROR_EXTERNAL;
789 static av_cold int xvid_encode_close(AVCodecContext *avctx) {
790 struct xvid_context *x = avctx->priv_data;
792 if(x->encoder_handle)
793 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
794 x->encoder_handle = NULL;
796 av_freep(&avctx->extradata);
797 if( x->twopassbuffer != NULL ) {
798 av_freep(&x->twopassbuffer);
799 av_freep(&x->old_twopassbuffer);
800 avctx->stats_out = NULL;
802 if (x->twopassfd>=0) {
803 unlink(x->twopassfile);
807 av_freep(&x->twopassfile);
808 av_freep(&x->intra_matrix);
809 av_freep(&x->inter_matrix);
814 #define OFFSET(x) offsetof(struct xvid_context, x)
815 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
816 static const AVOption options[] = {
817 { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
818 { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
819 { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
820 { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
821 { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
822 { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
823 { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
824 { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
828 static const AVClass xvid_class = {
829 .class_name = "libxvid",
830 .item_name = av_default_item_name,
832 .version = LIBAVUTIL_VERSION_INT,
835 AVCodec ff_libxvid_encoder = {
837 .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
838 .type = AVMEDIA_TYPE_VIDEO,
839 .id = AV_CODEC_ID_MPEG4,
840 .priv_data_size = sizeof(struct xvid_context),
841 .init = xvid_encode_init,
842 .encode2 = xvid_encode_frame,
843 .close = xvid_encode_close,
844 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
845 .priv_class = &xvid_class,