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)
31 #include "libavutil/file.h"
32 #include "libavutil/cpu.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/mathematics.h"
35 #include "libxvid_internal.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 AVFrame encoded_picture; /**< Encoded frame information */
58 char *twopassbuffer; /**< Character buffer for two-pass */
59 char *old_twopassbuffer; /**< Old character buffer (two-pass) */
60 char *twopassfile; /**< second pass temp file name */
61 unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
62 unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
66 * Structure for the private first-pass plugin.
68 struct xvid_ff_pass1 {
69 int version; /**< Xvid version */
70 struct xvid_context *context; /**< Pointer to private context */
73 /* Prototypes - See function implementation for details */
74 int xvid_strip_vol_header(AVCodecContext *avctx, unsigned char *frame, unsigned int header_len, unsigned int frame_len);
75 int xvid_ff_2pass(void *ref, int opt, void *p1, void *p2);
76 void xvid_correct_framerate(AVCodecContext *avctx);
78 #if CONFIG_LIBXVID_ENCODER
81 * Create the private context for the encoder.
82 * All buffers are allocated, settings are loaded from the user,
83 * and the encoder context created.
85 * @param avctx AVCodecContext pointer to context
86 * @return Returns 0 on success, -1 on failure
88 static av_cold int xvid_encode_init(AVCodecContext *avctx) {
90 int xvid_flags = avctx->flags;
91 struct xvid_context *x = avctx->priv_data;
92 uint16_t *intra, *inter;
95 xvid_plugin_single_t single;
96 struct xvid_ff_pass1 rc2pass1;
97 xvid_plugin_2pass2_t rc2pass2;
98 xvid_gbl_init_t xvid_gbl_init;
99 xvid_enc_create_t xvid_enc_create;
100 xvid_enc_plugin_t plugins[7];
102 /* Bring in VOP flags from ffmpeg command-line */
103 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
104 if( xvid_flags & CODEC_FLAG_4MV )
105 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
108 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
109 if( xvid_flags & CODEC_FLAG_AC_PRED )
110 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
111 if( xvid_flags & CODEC_FLAG_GRAY )
112 x->vop_flags |= XVID_VOP_GREYSCALE;
114 /* Decide which ME quality setting to use */
116 switch( avctx->me_method ) {
117 case ME_FULL: /* Quality 6 */
118 x->me_flags |= XVID_ME_EXTSEARCH16
119 | XVID_ME_EXTSEARCH8;
121 case ME_EPZS: /* Quality 4 */
122 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
123 | XVID_ME_HALFPELREFINE8
124 | XVID_ME_CHROMA_PVOP
125 | XVID_ME_CHROMA_BVOP;
127 case ME_LOG: /* Quality 2 */
130 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
131 | XVID_ME_HALFPELREFINE16;
133 case ME_ZERO: /* Quality 0 */
138 /* Decide how we should decide blocks */
139 switch( avctx->mb_decision ) {
141 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
142 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
143 | XVID_ME_QUARTERPELREFINE8_RD
144 | XVID_ME_EXTSEARCH_RD
145 | XVID_ME_CHECKPREDICTION_RD;
147 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
148 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
149 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
150 | XVID_ME_QUARTERPELREFINE16_RD;
156 /* Bring in VOL flags from ffmpeg command-line */
158 if( xvid_flags & CODEC_FLAG_GMC ) {
159 x->vol_flags |= XVID_VOL_GMC;
160 x->me_flags |= XVID_ME_GME_REFINE;
162 if( xvid_flags & CODEC_FLAG_QPEL ) {
163 x->vol_flags |= XVID_VOL_QUARTERPEL;
164 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
165 if( x->vop_flags & XVID_VOP_INTER4V )
166 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
169 memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init));
170 xvid_gbl_init.version = XVID_VERSION;
171 xvid_gbl_init.debug = 0;
174 /* Xvid's PPC support is borked, use libavcodec to detect */
176 if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
177 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
180 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
182 /* Xvid can detect on x86 */
183 xvid_gbl_init.cpu_flags = 0;
187 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
189 /* Create the encoder reference */
190 memset(&xvid_enc_create, 0, sizeof(xvid_enc_create));
191 xvid_enc_create.version = XVID_VERSION;
193 /* Store the desired frame size */
194 xvid_enc_create.width = x->xsize = avctx->width;
195 xvid_enc_create.height = x->ysize = avctx->height;
197 /* Xvid can determine the proper profile to use */
198 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
200 /* We don't use zones */
201 xvid_enc_create.zones = NULL;
202 xvid_enc_create.num_zones = 0;
204 xvid_enc_create.num_threads = avctx->thread_count;
206 xvid_enc_create.plugins = plugins;
207 xvid_enc_create.num_plugins = 0;
209 /* Initialize Buffers */
210 x->twopassbuffer = NULL;
211 x->old_twopassbuffer = NULL;
212 x->twopassfile = NULL;
214 if( xvid_flags & CODEC_FLAG_PASS1 ) {
215 memset(&rc2pass1, 0, sizeof(struct xvid_ff_pass1));
216 rc2pass1.version = XVID_VERSION;
217 rc2pass1.context = x;
218 x->twopassbuffer = av_malloc(BUFFER_SIZE);
219 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
220 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
221 av_log(avctx, AV_LOG_ERROR,
222 "Xvid: Cannot allocate 2-pass log buffers\n");
225 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
227 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
228 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
229 xvid_enc_create.num_plugins++;
230 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
231 memset(&rc2pass2, 0, sizeof(xvid_plugin_2pass2_t));
232 rc2pass2.version = XVID_VERSION;
233 rc2pass2.bitrate = avctx->bit_rate;
235 fd = av_tempfile("xvidff.", &(x->twopassfile), 0, avctx);
237 av_log(avctx, AV_LOG_ERROR,
238 "Xvid: Cannot write 2-pass pipe\n");
242 if( avctx->stats_in == NULL ) {
243 av_log(avctx, AV_LOG_ERROR,
244 "Xvid: No 2-pass information loaded for second pass\n");
248 if( strlen(avctx->stats_in) >
249 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
251 av_log(avctx, AV_LOG_ERROR,
252 "Xvid: Cannot write to 2-pass pipe\n");
257 rc2pass2.filename = x->twopassfile;
258 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
259 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
260 xvid_enc_create.num_plugins++;
261 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
262 /* Single Pass Bitrate Control! */
263 memset(&single, 0, sizeof(xvid_plugin_single_t));
264 single.version = XVID_VERSION;
265 single.bitrate = avctx->bit_rate;
267 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
268 plugins[xvid_enc_create.num_plugins].param = &single;
269 xvid_enc_create.num_plugins++;
272 /* Luminance Masking */
273 if( 0.0 != avctx->lumi_masking ) {
274 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
275 plugins[xvid_enc_create.num_plugins].param = NULL;
276 xvid_enc_create.num_plugins++;
279 /* Frame Rate and Key Frames */
280 xvid_correct_framerate(avctx);
281 xvid_enc_create.fincr = avctx->time_base.num;
282 xvid_enc_create.fbase = avctx->time_base.den;
283 if( avctx->gop_size > 0 )
284 xvid_enc_create.max_key_interval = avctx->gop_size;
286 xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
289 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
292 xvid_enc_create.min_quant[0] = avctx->qmin;
293 xvid_enc_create.min_quant[1] = avctx->qmin;
294 xvid_enc_create.min_quant[2] = avctx->qmin;
295 xvid_enc_create.max_quant[0] = avctx->qmax;
296 xvid_enc_create.max_quant[1] = avctx->qmax;
297 xvid_enc_create.max_quant[2] = avctx->qmax;
300 x->intra_matrix = x->inter_matrix = NULL;
301 if( avctx->mpeg_quant )
302 x->vol_flags |= XVID_VOL_MPEGQUANT;
303 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
304 x->vol_flags |= XVID_VOL_MPEGQUANT;
306 if( avctx->intra_matrix ) {
307 intra = avctx->intra_matrix;
308 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
311 if( avctx->inter_matrix ) {
312 inter = avctx->inter_matrix;
313 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
317 for( i = 0; i < 64; i++ ) {
319 x->intra_matrix[i] = (unsigned char)intra[i];
321 x->inter_matrix[i] = (unsigned char)inter[i];
326 xvid_enc_create.frame_drop_ratio = 0;
327 xvid_enc_create.global = 0;
328 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
329 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
331 /* Determines which codec mode we are operating in */
332 avctx->extradata = NULL;
333 avctx->extradata_size = 0;
334 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
335 /* In this case, we are claiming to be MPEG4 */
336 x->quicktime_format = 1;
337 avctx->codec_id = CODEC_ID_MPEG4;
339 /* We are claiming to be Xvid */
340 x->quicktime_format = 0;
341 if(!avctx->codec_tag)
342 avctx->codec_tag = AV_RL32("xvid");
346 xvid_enc_create.max_bframes = avctx->max_b_frames;
347 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
348 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
349 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
351 /* Create encoder context */
352 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
354 av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
358 x->encoder_handle = xvid_enc_create.handle;
359 avctx->coded_frame = &x->encoded_picture;
365 * Encode a single frame.
367 * @param avctx AVCodecContext pointer to context
368 * @param frame Pointer to encoded frame buffer
369 * @param buf_size Size of encoded frame buffer
370 * @param data Pointer to AVFrame of unencoded frame
371 * @return Returns 0 on success, -1 on failure
373 static int xvid_encode_frame(AVCodecContext *avctx,
374 unsigned char *frame, int buf_size, void *data) {
377 struct xvid_context *x = avctx->priv_data;
378 AVFrame *picture = data;
379 AVFrame *p = &(x->encoded_picture);
381 xvid_enc_frame_t xvid_enc_frame;
382 xvid_enc_stats_t xvid_enc_stats;
384 /* Start setting up the frame */
385 memset(&xvid_enc_frame, 0, sizeof(xvid_enc_frame));
386 xvid_enc_frame.version = XVID_VERSION;
387 memset(&xvid_enc_stats, 0, sizeof(xvid_enc_stats));
388 xvid_enc_stats.version = XVID_VERSION;
391 /* Let Xvid know where to put the frame. */
392 xvid_enc_frame.bitstream = frame;
393 xvid_enc_frame.length = buf_size;
395 /* Initialize input image fields */
396 if( avctx->pix_fmt != PIX_FMT_YUV420P ) {
397 av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
401 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
403 for( i = 0; i < 4; i++ ) {
404 xvid_enc_frame.input.plane[i] = picture->data[i];
405 xvid_enc_frame.input.stride[i] = picture->linesize[i];
409 xvid_enc_frame.vop_flags = x->vop_flags;
410 xvid_enc_frame.vol_flags = x->vol_flags;
411 xvid_enc_frame.motion = x->me_flags;
412 xvid_enc_frame.type =
413 picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
414 picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
415 picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
418 /* Pixel aspect ratio setting */
419 if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
420 avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
421 av_log(avctx, AV_LOG_ERROR, "Invalid pixel aspect ratio %i/%i\n",
422 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
425 xvid_enc_frame.par = XVID_PAR_EXT;
426 xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
427 xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
430 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
431 else xvid_enc_frame.quant = 0;
434 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
435 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
438 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
439 &xvid_enc_frame, &xvid_enc_stats);
441 /* Two-pass log buffer swapping */
442 avctx->stats_out = NULL;
443 if( x->twopassbuffer ) {
444 tmp = x->old_twopassbuffer;
445 x->old_twopassbuffer = x->twopassbuffer;
446 x->twopassbuffer = tmp;
447 x->twopassbuffer[0] = 0;
448 if( x->old_twopassbuffer[0] != 0 ) {
449 avctx->stats_out = x->old_twopassbuffer;
454 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
455 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
456 p->pict_type = AV_PICTURE_TYPE_P;
457 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
458 p->pict_type = AV_PICTURE_TYPE_B;
459 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
460 p->pict_type = AV_PICTURE_TYPE_S;
462 p->pict_type = AV_PICTURE_TYPE_I;
463 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
465 if( x->quicktime_format )
466 return xvid_strip_vol_header(avctx, frame,
467 xvid_enc_stats.hlength, xerr);
473 av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
479 * Destroy the private context for the encoder.
480 * All buffers are freed, and the Xvid encoder context is destroyed.
482 * @param avctx AVCodecContext pointer to context
483 * @return Returns 0, success guaranteed
485 static av_cold int xvid_encode_close(AVCodecContext *avctx) {
486 struct xvid_context *x = avctx->priv_data;
488 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
490 av_freep(&avctx->extradata);
491 if( x->twopassbuffer != NULL ) {
492 av_free(x->twopassbuffer);
493 av_free(x->old_twopassbuffer);
494 avctx->stats_out = NULL;
496 av_free(x->twopassfile);
497 av_free(x->intra_matrix);
498 av_free(x->inter_matrix);
504 * Routine to create a global VO/VOL header for MP4 container.
505 * What we do here is extract the header from the Xvid bitstream
506 * as it is encoded. We also strip the repeated headers from the
507 * bitstream when a global header is requested for MPEG-4 ISO
510 * @param avctx AVCodecContext pointer to context
511 * @param frame Pointer to encoded frame data
512 * @param header_len Length of header to search
513 * @param frame_len Length of encoded frame data
514 * @return Returns new length of frame data
516 int xvid_strip_vol_header(AVCodecContext *avctx,
517 unsigned char *frame,
518 unsigned int header_len,
519 unsigned int frame_len) {
522 for( i = 0; i < header_len - 3; i++ ) {
523 if( frame[i] == 0x00 &&
524 frame[i+1] == 0x00 &&
525 frame[i+2] == 0x01 &&
526 frame[i+3] == 0xB6 ) {
533 /* We need to store the header, so extract it */
534 if( avctx->extradata == NULL ) {
535 avctx->extradata = av_malloc(vo_len);
536 memcpy(avctx->extradata, frame, vo_len);
537 avctx->extradata_size = vo_len;
539 /* Less dangerous now, memmove properly copies the two
540 chunks of overlapping data */
541 memmove(frame, &(frame[vo_len]), frame_len - vo_len);
542 return frame_len - vo_len;
548 * Routine to correct a possibly erroneous framerate being fed to us.
549 * Xvid currently chokes on framerates where the ticks per frame is
550 * extremely large. This function works to correct problems in this area
551 * by estimating a new framerate and taking the simpler fraction of
554 * @param avctx Context that contains the framerate to correct.
556 void xvid_correct_framerate(AVCodecContext *avctx) {
558 int est_frate, est_fbase;
562 frate = avctx->time_base.den;
563 fbase = avctx->time_base.num;
565 gcd = av_gcd(frate, fbase);
571 if( frate <= 65000 && fbase <= 65000 ) {
572 avctx->time_base.den = frate;
573 avctx->time_base.num = fbase;
577 fps = (float)frate / (float)fbase;
578 est_fps = roundf(fps * 1000.0) / 1000.0;
580 est_frate = (int)est_fps;
581 if( est_fps > (int)est_fps ) {
582 est_frate = (est_frate + 1) * 1000;
583 est_fbase = (int)roundf((float)est_frate / est_fps);
587 gcd = av_gcd(est_frate, est_fbase);
593 if( fbase > est_fbase ) {
594 avctx->time_base.den = est_frate;
595 avctx->time_base.num = est_fbase;
596 av_log(avctx, AV_LOG_DEBUG,
597 "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
598 est_fps, (((est_fps - fps)/fps) * 100.0));
600 avctx->time_base.den = frate;
601 avctx->time_base.num = fbase;
606 * Xvid 2-Pass Kludge Section
608 * Xvid's default 2-pass doesn't allow us to create data as we need to, so
609 * this section spends time replacing the first pass plugin so we can write
610 * statistic information as libavcodec requests in. We have another kludge
611 * that allows us to pass data to the second pass in Xvid without a custom
612 * rate-control plugin.
616 * Initialize the two-pass plugin and context.
618 * @param param Input construction parameter structure
619 * @param handle Private context handle
620 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
622 static int xvid_ff_2pass_create(xvid_plg_create_t * param,
624 struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
625 char *log = x->context->twopassbuffer;
627 /* Do a quick bounds check */
629 return XVID_ERR_FAIL;
631 /* We use snprintf() */
632 /* This is because we can safely prevent a buffer overflow */
634 snprintf(log, BUFFER_REMAINING(log),
635 "# ffmpeg 2-pass log file, using xvid codec\n");
636 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
637 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
638 XVID_VERSION_MAJOR(XVID_VERSION),
639 XVID_VERSION_MINOR(XVID_VERSION),
640 XVID_VERSION_PATCH(XVID_VERSION));
642 *handle = x->context;
647 * Destroy the two-pass plugin context.
649 * @param ref Context pointer for the plugin
650 * @param param Destrooy context
651 * @return Returns 0, success guaranteed
653 static int xvid_ff_2pass_destroy(struct xvid_context *ref,
654 xvid_plg_destroy_t *param) {
655 /* Currently cannot think of anything to do on destruction */
656 /* Still, the framework should be here for reference/use */
657 if( ref->twopassbuffer != NULL )
658 ref->twopassbuffer[0] = 0;
663 * Enable fast encode mode during the first pass.
665 * @param ref Context pointer for the plugin
666 * @param param Frame data
667 * @return Returns 0, success guaranteed
669 static int xvid_ff_2pass_before(struct xvid_context *ref,
670 xvid_plg_data_t *param) {
672 int motion_replacements;
675 /* Nothing to do here, result is changed too much */
676 if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
679 /* We can implement a 'turbo' first pass mode here */
683 motion_remove = ~XVID_ME_CHROMA_PVOP &
684 ~XVID_ME_CHROMA_BVOP &
685 ~XVID_ME_EXTSEARCH16 &
686 ~XVID_ME_ADVANCEDDIAMOND16;
687 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
688 XVID_ME_SKIP_DELTASEARCH |
689 XVID_ME_FASTREFINE16 |
690 XVID_ME_BFRAME_EARLYSTOP;
691 vop_remove = ~XVID_VOP_MODEDECISION_RD &
692 ~XVID_VOP_FAST_MODEDECISION_RD &
693 ~XVID_VOP_TRELLISQUANT &
697 param->vol_flags &= ~XVID_VOL_GMC;
698 param->vop_flags &= vop_remove;
699 param->motion_flags &= motion_remove;
700 param->motion_flags |= motion_replacements;
706 * Capture statistic data and write it during first pass.
708 * @param ref Context pointer for the plugin
709 * @param param Statistic data
710 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
712 static int xvid_ff_2pass_after(struct xvid_context *ref,
713 xvid_plg_data_t *param) {
714 char *log = ref->twopassbuffer;
715 const char *frame_types = " ipbs";
718 /* Quick bounds check */
720 return XVID_ERR_FAIL;
722 /* Convert the type given to us into a character */
723 if( param->type < 5 && param->type > 0 ) {
724 frame_type = frame_types[param->type];
726 return XVID_ERR_FAIL;
729 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
730 "%c %d %d %d %d %d %d\n",
731 frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
732 param->stats.ublks, param->stats.length, param->stats.hlength);
738 * Dispatch function for our custom plugin.
739 * This handles the dispatch for the Xvid plugin. It passes data
740 * on to other functions for actual processing.
742 * @param ref Context pointer for the plugin
743 * @param cmd The task given for us to complete
744 * @param p1 First parameter (varies)
745 * @param p2 Second parameter (varies)
746 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
748 int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) {
754 case XVID_PLG_BEFORE:
755 return xvid_ff_2pass_before(ref, p1);
757 case XVID_PLG_CREATE:
758 return xvid_ff_2pass_create(p1, p2);
761 return xvid_ff_2pass_after(ref, p1);
763 case XVID_PLG_DESTROY:
764 return xvid_ff_2pass_destroy(ref, p1);
767 return XVID_ERR_FAIL;
772 * Xvid codec definition for libavcodec.
774 AVCodec ff_libxvid_encoder = {
776 .type = AVMEDIA_TYPE_VIDEO,
777 .id = CODEC_ID_MPEG4,
778 .priv_data_size = sizeof(struct xvid_context),
779 .init = xvid_encode_init,
780 .encode = xvid_encode_frame,
781 .close = xvid_encode_close,
782 .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
783 .long_name= NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
786 #endif /* CONFIG_LIBXVID_ENCODER */