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 "libxvid_internal.h"
34 * Buffer management macros.
36 #define BUFFER_SIZE 1024
37 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
38 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
42 extern int has_altivec(void);
46 * Structure for the private XviD context.
47 * This stores all the private context for the codec.
49 typedef struct xvid_context {
50 void *encoder_handle; /** Handle for XviD Encoder */
51 int xsize, ysize; /** Frame 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 typedef struct xvid_ff_pass1 {
69 int version; /** XviD version */
70 xvid_context_t *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);
79 * Creates the private context for the encoder.
80 * All buffers are allocated, settings are loaded from the user,
81 * and the encoder context created.
83 * @param avctx AVCodecContext pointer to context
84 * @return Returns 0 on success, -1 on failure
86 int ff_xvid_encode_init(AVCodecContext *avctx) {
88 int xvid_flags = avctx->flags;
89 xvid_context_t *x = avctx->priv_data;
90 uint16_t *intra, *inter;
93 xvid_plugin_single_t single;
94 xvid_ff_pass1_t rc2pass1;
95 xvid_plugin_2pass2_t rc2pass2;
96 xvid_gbl_init_t xvid_gbl_init;
97 xvid_enc_create_t xvid_enc_create;
98 xvid_enc_plugin_t plugins[7];
100 /* Bring in VOP flags from ffmpeg command-line */
101 x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
102 if( xvid_flags & CODEC_FLAG_4MV )
103 x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
104 if( xvid_flags & CODEC_FLAG_TRELLIS_QUANT)
105 x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
106 if( xvid_flags & CODEC_FLAG_AC_PRED )
107 x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
108 if( xvid_flags & CODEC_FLAG_GRAY )
109 x->vop_flags |= XVID_VOP_GREYSCALE;
111 /* Decide which ME quality setting to use */
113 switch( avctx->me_method ) {
114 case ME_FULL: /* Quality 6 */
115 x->me_flags |= XVID_ME_EXTSEARCH16
116 | XVID_ME_EXTSEARCH8;
118 case ME_EPZS: /* Quality 4 */
119 x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
120 | XVID_ME_HALFPELREFINE8
121 | XVID_ME_CHROMA_PVOP
122 | XVID_ME_CHROMA_BVOP;
124 case ME_LOG: /* Quality 2 */
127 x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
128 | XVID_ME_HALFPELREFINE16;
130 case ME_ZERO: /* Quality 0 */
135 /* Decide how we should decide blocks */
136 switch( avctx->mb_decision ) {
138 x->vop_flags |= XVID_VOP_MODEDECISION_RD;
139 x->me_flags |= XVID_ME_HALFPELREFINE8_RD
140 | XVID_ME_QUARTERPELREFINE8_RD
141 | XVID_ME_EXTSEARCH_RD
142 | XVID_ME_CHECKPREDICTION_RD;
144 if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
145 x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
146 x->me_flags |= XVID_ME_HALFPELREFINE16_RD
147 | XVID_ME_QUARTERPELREFINE16_RD;
153 /* Bring in VOL flags from ffmpeg command-line */
155 if( xvid_flags & CODEC_FLAG_GMC ) {
156 x->vol_flags |= XVID_VOL_GMC;
157 x->me_flags |= XVID_ME_GME_REFINE;
159 if( xvid_flags & CODEC_FLAG_QPEL ) {
160 x->vol_flags |= XVID_VOL_QUARTERPEL;
161 x->me_flags |= XVID_ME_QUARTERPELREFINE16;
162 if( x->vop_flags & XVID_VOP_INTER4V )
163 x->me_flags |= XVID_ME_QUARTERPELREFINE8;
166 memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init));
167 xvid_gbl_init.version = XVID_VERSION;
168 xvid_gbl_init.debug = 0;
171 /* XviD's PPC support is borked, use libavcodec to detect */
173 if( has_altivec() ) {
174 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
177 xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
179 /* XviD can detect on x86 */
180 xvid_gbl_init.cpu_flags = 0;
184 xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
186 /* Create the encoder reference */
187 memset(&xvid_enc_create, 0, sizeof(xvid_enc_create));
188 xvid_enc_create.version = XVID_VERSION;
190 /* Store the desired frame size */
191 xvid_enc_create.width = x->xsize = avctx->width;
192 xvid_enc_create.height = x->ysize = avctx->height;
194 /* XviD can determine the proper profile to use */
195 /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
197 /* We don't use zones or threads */
198 xvid_enc_create.zones = NULL;
199 xvid_enc_create.num_zones = 0;
200 xvid_enc_create.num_threads = 0;
202 xvid_enc_create.plugins = plugins;
203 xvid_enc_create.num_plugins = 0;
205 /* Initialize Buffers */
206 x->twopassbuffer = NULL;
207 x->old_twopassbuffer = NULL;
208 x->twopassfile = NULL;
210 if( xvid_flags & CODEC_FLAG_PASS1 ) {
211 memset(&rc2pass1, 0, sizeof(xvid_ff_pass1_t));
212 rc2pass1.version = XVID_VERSION;
213 rc2pass1.context = x;
214 x->twopassbuffer = av_malloc(BUFFER_SIZE);
215 x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
216 if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
217 av_log(avctx, AV_LOG_ERROR,
218 "XviD: Cannot allocate 2-pass log buffers\n");
221 x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
223 plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
224 plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
225 xvid_enc_create.num_plugins++;
226 } else if( xvid_flags & CODEC_FLAG_PASS2 ) {
227 memset(&rc2pass2, 0, sizeof(xvid_plugin_2pass2_t));
228 rc2pass2.version = XVID_VERSION;
229 rc2pass2.bitrate = avctx->bit_rate;
231 fd = av_tempfile("xvidff.", &(x->twopassfile));
233 av_log(avctx, AV_LOG_ERROR,
234 "XviD: Cannot write 2-pass pipe\n");
238 if( avctx->stats_in == NULL ) {
239 av_log(avctx, AV_LOG_ERROR,
240 "XviD: No 2-pass information loaded for second pass\n");
244 if( strlen(avctx->stats_in) >
245 write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
247 av_log(avctx, AV_LOG_ERROR,
248 "XviD: Cannot write to 2-pass pipe\n");
253 rc2pass2.filename = x->twopassfile;
254 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
255 plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
256 xvid_enc_create.num_plugins++;
257 } else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
258 /* Single Pass Bitrate Control! */
259 memset(&single, 0, sizeof(xvid_plugin_single_t));
260 single.version = XVID_VERSION;
261 single.bitrate = avctx->bit_rate;
263 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
264 plugins[xvid_enc_create.num_plugins].param = &single;
265 xvid_enc_create.num_plugins++;
268 /* Luminance Masking */
269 if( 0.0 != avctx->lumi_masking ) {
270 plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
271 plugins[xvid_enc_create.num_plugins].param = NULL;
272 xvid_enc_create.num_plugins++;
275 /* Frame Rate and Key Frames */
276 xvid_correct_framerate(avctx);
277 xvid_enc_create.fincr = avctx->time_base.num;
278 xvid_enc_create.fbase = avctx->time_base.den;
279 if( avctx->gop_size > 0 )
280 xvid_enc_create.max_key_interval = avctx->gop_size;
282 xvid_enc_create.max_key_interval = 240; /* XviD's best default */
285 if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
288 xvid_enc_create.min_quant[0] = avctx->qmin;
289 xvid_enc_create.min_quant[1] = avctx->qmin;
290 xvid_enc_create.min_quant[2] = avctx->qmin;
291 xvid_enc_create.max_quant[0] = avctx->qmax;
292 xvid_enc_create.max_quant[1] = avctx->qmax;
293 xvid_enc_create.max_quant[2] = avctx->qmax;
296 x->intra_matrix = x->inter_matrix = NULL;
297 if( avctx->mpeg_quant )
298 x->vol_flags |= XVID_VOL_MPEGQUANT;
299 if( (avctx->intra_matrix || avctx->inter_matrix) ) {
300 x->vol_flags |= XVID_VOL_MPEGQUANT;
302 if( avctx->intra_matrix ) {
303 intra = avctx->intra_matrix;
304 x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
307 if( avctx->inter_matrix ) {
308 inter = avctx->inter_matrix;
309 x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
313 for( i = 0; i < 64; i++ ) {
315 x->intra_matrix[i] = (unsigned char)intra[i];
317 x->inter_matrix[i] = (unsigned char)inter[i];
322 xvid_enc_create.frame_drop_ratio = 0;
323 xvid_enc_create.global = 0;
324 if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
325 xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
327 /* Determines which codec mode we are operating in */
328 avctx->extradata = NULL;
329 avctx->extradata_size = 0;
330 if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
331 /* In this case, we are claiming to be MPEG4 */
332 x->quicktime_format = 1;
333 avctx->codec_id = CODEC_ID_MPEG4;
335 /* We are claiming to be XviD */
336 x->quicktime_format = 0;
337 if(!avctx->codec_tag)
338 avctx->codec_tag = ff_get_fourcc("xvid");
342 xvid_enc_create.max_bframes = avctx->max_b_frames;
343 xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
344 xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
345 if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
347 /* Create encoder context */
348 xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
350 av_log(avctx, AV_LOG_ERROR, "XviD: Could not create encoder reference\n");
354 x->encoder_handle = xvid_enc_create.handle;
355 avctx->coded_frame = &x->encoded_picture;
361 * Encodes a single frame.
363 * @param avctx AVCodecContext pointer to context
364 * @param frame Pointer to encoded frame buffer
365 * @param buf_size Size of encoded frame buffer
366 * @param data Pointer to AVFrame of unencoded frame
367 * @return Returns 0 on success, -1 on failure
369 int ff_xvid_encode_frame(AVCodecContext *avctx,
370 unsigned char *frame, int buf_size, void *data) {
373 xvid_context_t *x = avctx->priv_data;
374 AVFrame *picture = data;
375 AVFrame *p = &(x->encoded_picture);
377 xvid_enc_frame_t xvid_enc_frame;
378 xvid_enc_stats_t xvid_enc_stats;
380 /* Start setting up the frame */
381 memset(&xvid_enc_frame, 0, sizeof(xvid_enc_frame));
382 xvid_enc_frame.version = XVID_VERSION;
383 memset(&xvid_enc_stats, 0, sizeof(xvid_enc_stats));
384 xvid_enc_stats.version = XVID_VERSION;
387 /* Let XviD know where to put the frame. */
388 xvid_enc_frame.bitstream = frame;
389 xvid_enc_frame.length = buf_size;
391 /* Initialize input image fields */
392 if( avctx->pix_fmt != PIX_FMT_YUV420P ) {
393 av_log(avctx, AV_LOG_ERROR, "XviD: Color spaces other than 420p not supported\n");
397 xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
399 for( i = 0; i < 4; i++ ) {
400 xvid_enc_frame.input.plane[i] = picture->data[i];
401 xvid_enc_frame.input.stride[i] = picture->linesize[i];
405 xvid_enc_frame.vop_flags = x->vop_flags;
406 xvid_enc_frame.vol_flags = x->vol_flags;
407 xvid_enc_frame.motion = x->me_flags;
408 xvid_enc_frame.type = XVID_TYPE_AUTO;
411 if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
412 else xvid_enc_frame.quant = 0;
415 xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
416 xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
419 xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
420 &xvid_enc_frame, &xvid_enc_stats);
422 /* Two-pass log buffer swapping */
423 avctx->stats_out = NULL;
424 if( x->twopassbuffer ) {
425 tmp = x->old_twopassbuffer;
426 x->old_twopassbuffer = x->twopassbuffer;
427 x->twopassbuffer = tmp;
428 x->twopassbuffer[0] = 0;
429 if( x->old_twopassbuffer[0] != 0 ) {
430 avctx->stats_out = x->old_twopassbuffer;
435 p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
436 if( xvid_enc_stats.type == XVID_TYPE_PVOP )
437 p->pict_type = FF_P_TYPE;
438 else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
439 p->pict_type = FF_B_TYPE;
440 else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
441 p->pict_type = FF_S_TYPE;
443 p->pict_type = FF_I_TYPE;
444 if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
446 if( x->quicktime_format )
447 return xvid_strip_vol_header(avctx, frame,
448 xvid_enc_stats.hlength, xerr);
454 av_log(avctx, AV_LOG_ERROR, "XviD: Encoding Error Occurred: %i\n", xerr);
460 * Destroys the private context for the encoder.
461 * All buffers are freed, and the XviD encoder context is destroyed.
463 * @param avctx AVCodecContext pointer to context
464 * @return Returns 0, success guaranteed
466 int ff_xvid_encode_close(AVCodecContext *avctx) {
467 xvid_context_t *x = avctx->priv_data;
469 xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
471 if( avctx->extradata != NULL )
472 av_free(avctx->extradata);
473 if( x->twopassbuffer != NULL ) {
474 av_free(x->twopassbuffer);
475 av_free(x->old_twopassbuffer);
477 if( x->twopassfile != NULL )
478 av_free(x->twopassfile);
479 if( x->intra_matrix != NULL )
480 av_free(x->intra_matrix);
481 if( x->inter_matrix != NULL )
482 av_free(x->inter_matrix);
488 * Routine to create a global VO/VOL header for MP4 container.
489 * What we do here is extract the header from the XviD bitstream
490 * as it is encoded. We also strip the repeated headers from the
491 * bitstream when a global header is requested for MPEG-4 ISO
494 * @param avctx AVCodecContext pointer to context
495 * @param frame Pointer to encoded frame data
496 * @param header_len Length of header to search
497 * @param frame_len Length of encoded frame data
498 * @return Returns new length of frame data
500 int xvid_strip_vol_header(AVCodecContext *avctx,
501 unsigned char *frame,
502 unsigned int header_len,
503 unsigned int frame_len) {
506 for( i = 0; i < header_len - 3; i++ ) {
507 if( frame[i] == 0x00 &&
508 frame[i+1] == 0x00 &&
509 frame[i+2] == 0x01 &&
510 frame[i+3] == 0xB6 ) {
517 /* We need to store the header, so extract it */
518 if( avctx->extradata == NULL ) {
519 avctx->extradata = av_malloc(vo_len);
520 memcpy(avctx->extradata, frame, vo_len);
521 avctx->extradata_size = vo_len;
523 /* Less dangerous now, memmove properly copies the two
524 chunks of overlapping data */
525 memmove(frame, &(frame[vo_len]), frame_len - vo_len);
526 return frame_len - vo_len;
532 * Routine to correct a possibly erroneous framerate being fed to us.
533 * XviD currently chokes on framerates where the ticks per frame is
534 * extremely large. This function works to correct problems in this area
535 * by estimating a new framerate and taking the simpler fraction of
538 * @param avctx Context that contains the framerate to correct.
540 void xvid_correct_framerate(AVCodecContext *avctx) {
542 int est_frate, est_fbase;
546 frate = avctx->time_base.den;
547 fbase = avctx->time_base.num;
549 gcd = ff_gcd(frate, fbase);
555 if( frate <= 65000 && fbase <= 65000 ) {
556 avctx->time_base.den = frate;
557 avctx->time_base.num = fbase;
561 fps = (float)frate / (float)fbase;
562 est_fps = roundf(fps * 1000.0) / 1000.0;
564 est_frate = (int)est_fps;
565 if( est_fps > (int)est_fps ) {
566 est_frate = (est_frate + 1) * 1000;
567 est_fbase = (int)roundf((float)est_frate / est_fps);
571 gcd = ff_gcd(est_frate, est_fbase);
577 if( fbase > est_fbase ) {
578 avctx->time_base.den = est_frate;
579 avctx->time_base.num = est_fbase;
580 av_log(avctx, AV_LOG_DEBUG,
581 "XviD: framerate re-estimated: %.2f, %.3f%% correction\n",
582 est_fps, (((est_fps - fps)/fps) * 100.0));
584 avctx->time_base.den = frate;
585 avctx->time_base.num = fbase;
590 * XviD 2-Pass Kludge Section
592 * XviD's default 2-pass doesn't allow us to create data as we need to, so
593 * this section spends time replacing the first pass plugin so we can write
594 * statistic information as libavcodec requests in. We have another kludge
595 * that allows us to pass data to the second pass in XviD without a custom
596 * rate-control plugin.
600 * Initializes the two-pass plugin and context.
602 * @param param Input construction parameter structure
603 * @param handle Private context handle
604 * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
606 static int xvid_ff_2pass_create(xvid_plg_create_t * param,
608 xvid_ff_pass1_t *x = (xvid_ff_pass1_t *)param->param;
609 char *log = x->context->twopassbuffer;
611 /* Do a quick bounds check */
613 return XVID_ERR_FAIL;
615 /* We use snprintf() */
616 /* This is because we can safely prevent a buffer overflow */
618 snprintf(log, BUFFER_REMAINING(log),
619 "# ffmpeg 2-pass log file, using xvid codec\n");
620 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
621 "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
622 XVID_VERSION_MAJOR(XVID_VERSION),
623 XVID_VERSION_MINOR(XVID_VERSION),
624 XVID_VERSION_PATCH(XVID_VERSION));
626 *handle = x->context;
631 * Destroys the two-pass plugin context.
633 * @param ref Context pointer for the plugin
634 * @param param Destrooy context
635 * @return Returns 0, success guaranteed
637 static int xvid_ff_2pass_destroy(xvid_context_t *ref,
638 xvid_plg_destroy_t *param) {
639 /* Currently cannot think of anything to do on destruction */
640 /* Still, the framework should be here for reference/use */
641 if( ref->twopassbuffer != NULL )
642 ref->twopassbuffer[0] = 0;
647 * Enables fast encode mode during the first pass.
649 * @param ref Context pointer for the plugin
650 * @param param Frame data
651 * @return Returns 0, success guaranteed
653 static int xvid_ff_2pass_before(xvid_context_t *ref,
654 xvid_plg_data_t *param) {
656 int motion_replacements;
659 /* Nothing to do here, result is changed too much */
660 if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
663 /* We can implement a 'turbo' first pass mode here */
667 motion_remove = ~XVID_ME_CHROMA_PVOP &
668 ~XVID_ME_CHROMA_BVOP &
669 ~XVID_ME_EXTSEARCH16 &
670 ~XVID_ME_ADVANCEDDIAMOND16;
671 motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
672 XVID_ME_SKIP_DELTASEARCH |
673 XVID_ME_FASTREFINE16 |
674 XVID_ME_BFRAME_EARLYSTOP;
675 vop_remove = ~XVID_VOP_MODEDECISION_RD &
676 ~XVID_VOP_FAST_MODEDECISION_RD &
677 ~XVID_VOP_TRELLISQUANT &
681 param->vol_flags &= ~XVID_VOL_GMC;
682 param->vop_flags &= vop_remove;
683 param->motion_flags &= motion_remove;
684 param->motion_flags |= motion_replacements;
690 * Captures statistic data and writes it during first pass.
692 * @param ref Context pointer for the plugin
693 * @param param Statistic data
694 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
696 static int xvid_ff_2pass_after(xvid_context_t *ref,
697 xvid_plg_data_t *param) {
698 char *log = ref->twopassbuffer;
699 char *frame_types = " ipbs";
702 /* Quick bounds check */
704 return XVID_ERR_FAIL;
706 /* Convert the type given to us into a character */
707 if( param->type < 5 && param->type > 0 ) {
708 frame_type = frame_types[param->type];
710 return XVID_ERR_FAIL;
713 snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
714 "%c %d %d %d %d %d %d\n",
715 frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
716 param->stats.ublks, param->stats.length, param->stats.hlength);
722 * Dispatch function for our custom plugin.
723 * This handles the dispatch for the XviD plugin. It passes data
724 * on to other functions for actual processing.
726 * @param ref Context pointer for the plugin
727 * @param cmd The task given for us to complete
728 * @param p1 First parameter (varies)
729 * @param p2 Second parameter (varies)
730 * @return Returns XVID_ERR_xxxx on failure, or 0 on success
732 int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) {
738 case XVID_PLG_BEFORE:
739 return xvid_ff_2pass_before(ref, p1);
741 case XVID_PLG_CREATE:
742 return xvid_ff_2pass_create(p1, p2);
745 return xvid_ff_2pass_after(ref, p1);
747 case XVID_PLG_DESTROY:
748 return xvid_ff_2pass_destroy(ref, p1);
751 return XVID_ERR_FAIL;
756 * XviD codec definition for libavcodec.
758 AVCodec libxvid_encoder = {
762 sizeof(xvid_context_t),
764 ff_xvid_encode_frame,
765 ff_xvid_encode_close,
766 .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},