1 /*****************************************************************************
2 * x264.c: h264 video encoder
3 *****************************************************************************
4 * Copyright (C) 2004-2006 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
30 #include <vlc/decoder.h>
34 #define SOUT_CFG_PREFIX "sout-x264-"
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Open ( vlc_object_t * );
40 static void Close( vlc_object_t * );
42 /* Frame-type options */
44 #define KEYINT_TEXT N_("Maximum GOP size")
45 #define KEYINT_LONGTEXT N_( "Sets maximum interval between IDR-frames." \
46 "Larger values save bits, thus improving quality for a given bitrate at " \
47 "the cost of seeking precision." )
49 #define MIN_KEYINT_TEXT N_("Minimum GOP size")
50 #define MIN_KEYINT_LONGTEXT N_( "Sets minimum interval between IDR-frames. " \
51 "In H.264, I-frames do not necessarily bound a closed GOP because it is " \
52 "allowable for a P-frame to be predicted from more frames than just the " \
53 "one frame before it (also see frameref). Therefore, I-frames are not " \
54 "necessarily seekable. IDR-Frames restrict subsequent P-frames from " \
55 "referring to any frame prior to the IDR-Frame. \n" \
56 "If scenecuts appear within this interval, they are still encoded as " \
57 "I-frames, but do not start a new GOP." )
59 #define SCENE_TEXT N_("Extra I-Frames aggressivity" )
60 #define SCENE_LONGTEXT N_( "Scene-cut detection. Controls how " \
61 "aggressively to insert extra I-frames. With small values of " \
62 "scenecut, the codec often has " \
63 "to force an I-frame when it would exceed keyint. " \
64 "Good values of scenecut may find a better location for the " \
65 "I-frame. Large values use more I-frames " \
66 "than necessary, thus wasting bits. -1 disables scene-cut detection, so " \
67 "I-frames are be inserted only every other keyint frames, which probably " \
68 "leads to ugly encoding artifacts. (1-100)." )
70 #define BFRAMES_TEXT N_("B-frames between I and P")
71 #define BFRAMES_LONGTEXT N_( "Number of consecutive B-frames between I and " \
72 "P-frames. (1 to 16)" )
74 /// \bug [String] extra space
75 #define B_ADAPT_TEXT N_("Adaptive B-frame decision")
76 #define B_ADAPT_LONGTEXT N_( "Force the specified number of " \
77 "consecutive B-frames to be used, except possibly before an I-frame. " )
79 /// \bug [String] extra space
80 #define B_BIAS_TEXT N_("B-frames usage")
81 #define B_BIAS_LONGTEXT N_( "Bias the choice to use B-frames. Positive values " \
82 "cause more B-frames, negative values cause less B-frames. " )
84 #define BPYRAMID_TEXT N_("Keep some B-frames as references")
85 #define BPYRAMID_LONGTEXT N_( "Allows B-frames to be used as references for " \
86 "predicting other frames. Keeps the middle of 2+ consecutive B-frames " \
87 "as a reference, and reorders frame appropriately." )
89 #define CABAC_TEXT N_("CABAC")
90 #define CABAC_LONGTEXT N_( "CABAC (Context-Adaptive Binary Arithmetic "\
91 "Coding). Slightly slows down encoding and decoding, but should save " \
94 #define REF_TEXT N_("Number of reference frames")
95 #define REF_LONGTEXT N_( "Number of previous frames used as predictors. " \
96 "This is effective in Anime, but seems to make little difference in " \
97 "live-action source material. Some decoders are unable to deal with " \
98 "large frameref values. From 1 to 16" )
100 #define NF_TEXT N_("Skip loop filter")
101 #define NF_LONGTEXT N_( "Deactivate the deblocking loop filter (decreases quality).")
105 #define QP_TEXT N_("Set QP")
106 #define QP_LONGTEXT N_( "This selects the quantizer to use. " \
107 "Lower values result in better fidelity, but higher bitrates. 26 is a " \
108 "good default value. From 0 to 51. 0 means lossless" )
110 /// \bug [String] missing point
111 #define CRF_TEXT N_("Quality-based VBR")
112 #define CRF_LONGTEXT N_( "1-pass Quality-based VBR. From 0 to 51" )
114 #define QPMIN_TEXT N_("Min QP")
115 #define QPMIN_LONGTEXT N_( "Minimum quantizer, 15/35 seems to be a useful " \
118 /// \bug [String] typo ? Why doesn't it work in po ?
119 #define QPMAX_TEXT N_("Max QP")
120 #define QPMAX_LONGTEXT N_( "Maximum quantizer parameter." )
122 #define QPSTEP_TEXT N_("Max QP step")
123 #define QPSTEP_LONGTEXT N_( "Max QP step between frames.")
125 #define RATETOL_TEXT N_("Average bitrate tolerance")
126 #define RATETOL_LONGTEXT N_( "Allowed variance in average. " \
127 "bitrate (in kbits/s).")
129 #define VBV_MAXRATE_TEXT N_("Max local bitrate")
130 #define VBV_MAXRATE_LONGTEXT N_( "Sets a maximum local bitrate in kbits/s.")
132 #define VBV_BUFSIZE_TEXT N_("VBV buffer")
133 #define VBV_BUFSIZE_LONGTEXT N_( "Averaging period for the maximum " \
134 "local bitrate in kbits.")
136 #define VBV_INIT_TEXT N_("Initial VBV buffer occupancy")
137 #define VBV_INIT_LONGTEXT N_( "Sets the initial buffer occupancy as a " \
138 "fraction of the buffer size.")
140 #define IPRATIO_TEXT N_("QP factor between I and P")
141 #define IPRATIO_LONGTEXT N_( "QP factor between I and P.")
143 #define PBRATIO_TEXT N_("QP factor between P and B")
144 #define PBRATIO_LONGTEXT N_( "QP factor between P and B.")
146 #define CHROMA_QP_OFFSET_TEXT N_("QP difference between chroma and luma")
147 #define CHROMA_QP_OFFSET_LONGTEXT N_( "QP difference between chroma and luma.")
149 #define QCOMP_TEXT N_("QP curve compression")
150 #define QCOMP_LONGTEXT N_( "QP curve compression. (0.0=CBR to 1.0=QCP)")
152 #define CPLXBLUR_TEXT N_("Reduce fluctuations in QP")
153 #define CPLXBLUR_LONGTEXT N_( "This reduces the fluctuations in QP " \
154 "before curve compression. Temporally blurs complexity.")
156 #define QBLUR_TEXT N_("Reduce fluctuations in QP")
157 #define QBLUR_LONGTEXT N_( "This reduces the fluctations in QP " \
158 "after curve compression. Temporally blurs quants.")
162 #define ANALYSE_TEXT N_("Partitions to consider")
163 #define ANALYSE_LONGTEXT N_( "Partitions to consider in analyse mode: \n" \
166 " - normal: i4x4,p8x8,(i8x8)\n" \
167 " - slow : i4x4,p8x8,(i8x8),b8x8\n" \
168 " - all : i4x4,p8x8,(i8x8),b8x8,p4x4\n" \
169 "(p4x4 requires p8x8. i8x8 requires 8x8dct).")
171 #define DIRECT_PRED_TEXT N_("Direct MV prediction mode")
172 #define DIRECT_PRED_LONGTEXT N_( "Direct MV prediction mode. ")
174 #define WEIGHTB_TEXT N_("Weighted prediction for B-frames")
175 #define WEIGHTB_LONGTEXT N_( "Weighted prediction for B-frames.")
177 #define ME_TEXT N_("Integer pixel motion estimation method")
178 #define ME_LONGTEXT N_( "Selects the motion estimation algorithm: "\
179 " - dia: diamond search, radius 1 (fast)\n" \
180 " - hex: hexagonal search, radius 2\n" \
181 " - umh: uneven multi-hexagon search (better but slower)\n" \
182 " - esa: exhaustive search (extremely slow, primarily for testing)\n" )
184 #define MERANGE_TEXT N_("Maximum motion vector search range")
185 #define MERANGE_LONGTEXT N_( "Maximum distance to search for " \
186 "motion estimation, measured from predicted position(s). " \
187 "Default of 16 is good for most footage, "\
188 "high motion sequences may benefit from settings between 24-32. " \
191 #define SUBME_TEXT N_("Subpixel motion estimation and partition decision " \
193 #define SUBME_LONGTEXT N_( "This parameter controls quality versus speed " \
194 "tradeoffs involved in the motion estimation decision process " \
195 "(lower = quicker and higher = better quality). From 1 to 6." )
197 #define B_RDO_TEXT N_("RD based mode decision for B-frames.")
198 #define B_RDO_LONGTEXT N_( "RD based mode decision for B-frames. This " \
201 #define MIXED_REFS_TEXT N_("Decide references on a per partition basis")
202 #define MIXED_REFS_LONGTEXT N_( "Allows each 8x8 or 16x8 partition to " \
204 "select a reference frame, as opposed to only one ref per macroblock." )
206 #define CHROMA_ME_TEXT N_("Ignore chroma in motion estimation")
207 #define CHROMA_ME_LONGTEXT N_( "Chroma ME for subpel and mode decision in " \
210 #define BIME_TEXT N_("Jointly optimize both MVs in B-frames")
211 #define BIME_LONGTEXT N_( "Joint bidirectional motion refinement.")
213 #define TRANSFORM_8X8DCT_TEXT N_("Adaptive spatial transform size")
214 #define TRANSFORM_8X8DCT_LONGTEXT N_( \
215 "SATD-based decision for 8x8 transform in inter-MBs.")
217 #define TRELLIS_TEXT N_("Trellis RD quantization" )
218 #define TRELLIS_LONGTEXT N_( "Trellis RD quantization: \n" \
220 " - 1: enabled only on the final encode of a MB\n" \
221 " - 2: enabled on all mode decisions\n" \
222 "This requires CABAC." )
224 #define FAST_PSKIP_TEXT N_("Early SKIP detection on P-frames")
225 #define FAST_PSKIP_LONGTEXT N_( "Early SKIP detection on P-frames.")
227 #define NR_TEXT N_("Noise reduction")
228 #define NR_LONGTEXT N_( "Dct-domain noise reduction. Adaptive pseudo-deadzone.")
232 #define ASM_TEXT N_("CPU optimizations")
233 #define ASM_LONGTEXT N_( "Use assembler CPU optimizations.")
235 #define PSNR_TEXT N_("PSNR calculation")
236 #define PSNR_LONGTEXT N_( "This has no effect on actual encoding quality, "\
237 "it just prevents the stats from being calculated (for speed)." )
239 #define VERBOSE_TEXT N_("Statistics")
240 #define VERBOSE_LONGTEXT N_( "Print stats for each frame.")
243 static char *enc_me_list[] =
244 { "", "dia", "hex", "umh", "esa" };
245 static char *enc_me_list_text[] =
246 { N_("default"), N_("dia"), N_("hex"), N_("umh"), N_("esa") };
249 static char *enc_analyse_list[] =
250 { "", "none", "fast", "normal", "slow", "all" };
251 static char *enc_analyse_list_text[] =
252 { N_("default"), N_("none"), N_("fast"), N_("normal"),
253 N_("slow"), N_("all") };
255 static char *direct_pred_list[] =
256 { "", "none", "spatial", "temporal" };
257 static char *direct_pred_list_text[] =
258 { N_("default"), N_("none"), N_("spatial"), N_("temporal") };
261 set_description( _("H.264/MPEG4 AVC encoder (using x264 library)"));
262 set_capability( "encoder", 200 );
263 set_callbacks( Open, Close );
264 set_category( CAT_INPUT );
265 set_subcategory( SUBCAT_INPUT_VCODEC );
267 /* Frame-type options */
269 add_integer( SOUT_CFG_PREFIX "keyint", 250, NULL, KEYINT_TEXT,
270 KEYINT_LONGTEXT, VLC_FALSE );
272 add_integer( SOUT_CFG_PREFIX "min-keyint", 25, NULL, MIN_KEYINT_TEXT,
273 MIN_KEYINT_LONGTEXT, VLC_FALSE );
274 add_deprecated( SOUT_CFG_PREFIX "keyint-min", VLC_FALSE ); /* Deprecated since 0.8.5 */
276 add_integer( SOUT_CFG_PREFIX "scenecut", 40, NULL, SCENE_TEXT,
277 SCENE_LONGTEXT, VLC_FALSE );
278 change_integer_range( -1, 100 );
280 add_integer( SOUT_CFG_PREFIX "bframes", 0, NULL, BFRAMES_TEXT,
281 BFRAMES_LONGTEXT, VLC_FALSE );
282 change_integer_range( 0, 16 );
284 #if X264_BUILD >= 0x0013 /* r137 */
285 add_bool( SOUT_CFG_PREFIX "b-adapt", 1, NULL, B_ADAPT_TEXT,
286 B_ADAPT_LONGTEXT, VLC_FALSE );
288 add_integer( SOUT_CFG_PREFIX "b-bias", 0, NULL, B_BIAS_TEXT,
289 B_BIAS_LONGTEXT, VLC_FALSE );
290 change_integer_range( -100, 100 );
293 add_bool( SOUT_CFG_PREFIX "bpyramid", 0, NULL, BPYRAMID_TEXT,
294 BPYRAMID_LONGTEXT, VLC_FALSE );
296 add_bool( SOUT_CFG_PREFIX "cabac", 1, NULL, CABAC_TEXT, CABAC_LONGTEXT,
299 add_integer( SOUT_CFG_PREFIX "ref", 1, NULL, REF_TEXT,
300 REF_LONGTEXT, VLC_FALSE );
301 add_deprecated( SOUT_CFG_PREFIX "frameref", VLC_FALSE ); /* Deprecated since 0.8.5 */
302 change_integer_range( 1, 16 );
304 add_bool( SOUT_CFG_PREFIX "nf", 0, NULL, NF_TEXT,
305 NF_LONGTEXT, VLC_FALSE );
306 add_deprecated( SOUT_CFG_PREFIX "loopfilter", VLC_FALSE ); /* Deprecated since 0.8.5 */
310 add_integer( SOUT_CFG_PREFIX "qp", 26, NULL, QP_TEXT, QP_LONGTEXT,
312 change_integer_range( 0, 51 ); /* QP 0 -> lossless encoding */
314 #if X264_BUILD >= 37 /* r334 */
315 add_integer( SOUT_CFG_PREFIX "crf", 0, NULL, CRF_TEXT,
316 CRF_LONGTEXT, VLC_FALSE );
317 change_integer_range( 0, 51 );
320 add_integer( SOUT_CFG_PREFIX "qpmin", 10, NULL, QPMIN_TEXT,
321 QPMIN_LONGTEXT, VLC_FALSE );
322 add_deprecated( SOUT_CFG_PREFIX "qp-min", VLC_FALSE ); /* Deprecated since 0.8.5 */
323 change_integer_range( 0, 51 );
325 add_integer( SOUT_CFG_PREFIX "qpmax", 51, NULL, QPMAX_TEXT,
326 QPMAX_LONGTEXT, VLC_FALSE );
327 add_deprecated( SOUT_CFG_PREFIX "qp-max", VLC_FALSE ); /* Deprecated since 0.8.5 */
328 change_integer_range( 0, 51 );
330 add_integer( SOUT_CFG_PREFIX "qpstep", 4, NULL, QPSTEP_TEXT,
331 QPSTEP_LONGTEXT, VLC_FALSE );
332 change_integer_range( 0, 51 );
334 add_float( SOUT_CFG_PREFIX "ratetol", 1.0, NULL, RATETOL_TEXT,
335 RATETOL_LONGTEXT, VLC_FALSE );
336 add_deprecated( SOUT_CFG_PREFIX "tolerance", VLC_FALSE ); /* Deprecated since 0.8.5 */
337 change_float_range( 0, 100 );
339 add_integer( SOUT_CFG_PREFIX "vbv-maxrate", 0, NULL, VBV_MAXRATE_TEXT,
340 VBV_MAXRATE_LONGTEXT, VLC_FALSE );
342 add_integer( SOUT_CFG_PREFIX "vbv-bufsize", 0, NULL, VBV_BUFSIZE_TEXT,
343 VBV_BUFSIZE_LONGTEXT, VLC_FALSE );
345 add_float( SOUT_CFG_PREFIX "vbv-init", 0.9, NULL, VBV_INIT_TEXT,
346 VBV_INIT_LONGTEXT, VLC_FALSE );
347 change_float_range( 0, 1 );
349 add_float( SOUT_CFG_PREFIX "ipratio", 1.40, NULL, IPRATIO_TEXT,
350 IPRATIO_LONGTEXT, VLC_FALSE );
351 change_float_range( 0, 100 );
353 add_float( SOUT_CFG_PREFIX "pbratio", 1.30, NULL, PBRATIO_TEXT,
354 PBRATIO_LONGTEXT, VLC_FALSE );
355 change_float_range( 0, 100 );
357 #if X264_BUILD >= 23 /* r190 */
358 add_integer( SOUT_CFG_PREFIX "chroma-qp-offset", 0, NULL, CHROMA_QP_OFFSET_TEXT,
359 CHROMA_QP_OFFSET_LONGTEXT, VLC_FALSE );
362 add_float( SOUT_CFG_PREFIX "qcomp", 0.60, NULL, QCOMP_TEXT,
363 QCOMP_LONGTEXT, VLC_FALSE );
364 change_float_range( 0, 1 );
366 add_float( SOUT_CFG_PREFIX "cplxblur", 20.0, NULL, CPLXBLUR_TEXT,
367 CPLXBLUR_LONGTEXT, VLC_FALSE );
369 add_float( SOUT_CFG_PREFIX "qblur", 0.5, NULL, QBLUR_TEXT,
370 QBLUR_LONGTEXT, VLC_FALSE );
374 add_string( SOUT_CFG_PREFIX "analyse", "all", NULL, ANALYSE_TEXT,
375 ANALYSE_LONGTEXT, VLC_FALSE );
376 change_string_list( enc_analyse_list, enc_analyse_list_text, 0 );
378 add_string( SOUT_CFG_PREFIX "direct", "temporal", NULL, DIRECT_PRED_TEXT,
379 DIRECT_PRED_LONGTEXT, VLC_FALSE );
380 change_string_list( direct_pred_list, direct_pred_list_text, 0 );
382 #if X264_BUILD >= 0x0012 /* r134 */
383 add_bool( SOUT_CFG_PREFIX "weightb", 0, NULL, WEIGHTB_TEXT,
384 WEIGHTB_LONGTEXT, VLC_FALSE );
387 #if X264_BUILD >= 24 /* r221 */
388 add_string( SOUT_CFG_PREFIX "me", "hex", NULL, ME_TEXT,
389 ME_LONGTEXT, VLC_FALSE );
390 change_string_list( enc_me_list, enc_me_list_text, 0 );
392 add_integer( SOUT_CFG_PREFIX "merange", 16, NULL, MERANGE_TEXT,
393 MERANGE_LONGTEXT, VLC_FALSE );
394 change_integer_range( 1, 64 );
397 add_integer( SOUT_CFG_PREFIX "subme", 5, NULL, SUBME_TEXT,
398 SUBME_LONGTEXT, VLC_FALSE );
399 add_deprecated( SOUT_CFG_PREFIX "subpel", VLC_FALSE ); /* Deprecated since 0.8.5 */
400 #if X264_BUILD >= 30 /* r262 */
401 change_integer_range( 1, 6 );
403 change_integer_range( 1, 5 );
406 #if X264_BUILD >= 41 /* r368 */
407 add_bool( SOUT_CFG_PREFIX "b-rdo", 0, NULL, B_RDO_TEXT,
408 B_RDO_LONGTEXT, VLC_FALSE );
411 #if X264_BUILD >= 36 /* r318 */
412 add_bool( SOUT_CFG_PREFIX "mixed-refs", 0, NULL, MIXED_REFS_TEXT,
413 MIXED_REFS_LONGTEXT, VLC_FALSE );
416 #if X264_BUILD >= 23 /* r171 */
417 add_bool( SOUT_CFG_PREFIX "chroma-me", 1, NULL, CHROMA_ME_TEXT,
418 CHROMA_ME_LONGTEXT, VLC_FALSE );
421 #if X264_BUILD >= 43 /* r390 */
422 add_bool( SOUT_CFG_PREFIX "bime", 0, NULL, BIME_TEXT,
423 BIME_LONGTEXT, VLC_FALSE );
426 #if X264_BUILD >= 30 /* r251 */
427 add_bool( SOUT_CFG_PREFIX "8x8dct", 0, NULL, TRANSFORM_8X8DCT_TEXT,
428 TRANSFORM_8X8DCT_LONGTEXT, VLC_FALSE );
431 #if X264_BUILD >= 39 /* r360 */
432 add_integer( SOUT_CFG_PREFIX "trellis", 0, NULL, TRELLIS_TEXT,
433 TRELLIS_LONGTEXT, VLC_FALSE );
434 change_integer_range( 0, 2 );
437 #if X264_BUILD >= 42 /* r384 */
438 add_bool( SOUT_CFG_PREFIX "fast-pskip", 1, NULL, FAST_PSKIP_TEXT,
439 FAST_PSKIP_LONGTEXT, VLC_FALSE );
442 #if X264_BUILD >= 44 /* r398 */
443 add_integer( SOUT_CFG_PREFIX "nr", 0, NULL, NR_TEXT,
444 NR_LONGTEXT, VLC_FALSE );
449 add_bool( SOUT_CFG_PREFIX "asm", 1, NULL, ASM_TEXT,
450 ASM_LONGTEXT, VLC_FALSE );
452 /* x264 psnr = 1 (default). disable PSNR calculation for speed. */
453 add_bool( SOUT_CFG_PREFIX "psnr", 0, NULL, PSNR_TEXT,
454 PSNR_LONGTEXT, VLC_FALSE );
456 #if X264_BUILD >= 0x000e /* r81 */
457 add_bool( SOUT_CFG_PREFIX "verbose", 0, NULL, VERBOSE_TEXT,
458 VERBOSE_LONGTEXT, VLC_FALSE );
463 /*****************************************************************************
465 *****************************************************************************/
466 static const char *ppsz_sout_options[] = {
467 "8x8dct", "analyse", "asm", "bframes", "bime", "bpyramid", "b-adapt",
468 "b-bias", "b-rdo", "cabac", "chroma-me", "chroma-qp-offset", "cplxblur",
469 "crf", "direct", "fast-pskip", "frameref", "ipratio", "keyint",
470 "keyint-min", "loopfilter", "me", "merange", "min-keyint", "mixed-refs",
471 "nf", "nr", "pbratio", "psnr", "qblur", "qp", "qcomp", "qpstep",
472 "qpmax", "qpmin", "qp-max", "qp-min", "ratetol", "ref", "scenecut",
473 "subme", "subpel", "tolerance", "trellis", "verbose", "vbv-bufsize",
474 "vbv-init", "vbv-maxrate", "weightb" , NULL
477 static block_t *Encode( encoder_t *, picture_t * );
487 mtime_t i_last_ref_pts;
490 /*****************************************************************************
491 * Open: probe the encoder
492 *****************************************************************************/
493 static int Open ( vlc_object_t *p_this )
495 encoder_t *p_enc = (encoder_t *)p_this;
496 encoder_sys_t *p_sys;
498 int i_qmin = 0, i_qmax = 0;
500 if( p_enc->fmt_out.i_codec != VLC_FOURCC( 'h', '2', '6', '4' ) &&
507 if( p_enc->fmt_in.video.i_width % 16 != 0 ||
508 p_enc->fmt_in.video.i_height % 16!= 0 )
510 msg_Warn( p_enc, "size is not a multiple of 16 (%ix%i)",
511 p_enc->fmt_in.video.i_width, p_enc->fmt_in.video.i_height );
513 if( p_enc->fmt_in.video.i_width < 16 ||
514 p_enc->fmt_in.video.i_height < 16 )
516 msg_Err( p_enc, "video is too small to be cropped" );
520 msg_Warn( p_enc, "cropping video to %ix%i",
521 p_enc->fmt_in.video.i_width >> 4 << 4,
522 p_enc->fmt_in.video.i_height >> 4 << 4 );
526 sout_CfgParse( p_enc, SOUT_CFG_PREFIX, ppsz_sout_options, p_enc->p_cfg );
528 p_enc->fmt_out.i_codec = VLC_FOURCC( 'h', '2', '6', '4' );
529 p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
531 p_enc->pf_encode_video = Encode;
532 p_enc->pf_encode_audio = NULL;
533 p_enc->p_sys = p_sys = malloc( sizeof( encoder_sys_t ) );
534 p_sys->i_last_ref_pts = 0;
536 x264_param_default( &p_sys->param );
537 p_sys->param.i_width = p_enc->fmt_in.video.i_width;
538 p_sys->param.i_height = p_enc->fmt_in.video.i_height;
540 p_sys->param.i_width = p_sys->param.i_width >> 4 << 4;
541 p_sys->param.i_height = p_sys->param.i_height >> 4 << 4;
544 /* average bitrate specified by transcode vb */
545 p_sys->param.rc.i_bitrate = p_enc->fmt_out.i_bitrate / 1000;
547 /* cbr = 1 overrides qp or crf and sets an average bitrate
548 but maxrate = average bitrate is needed for "real" CBR */
549 if( p_sys->param.rc.i_bitrate > 0 ) p_sys->param.rc.b_cbr = 1;
551 var_Get( p_enc, SOUT_CFG_PREFIX "qpstep", &val );
552 if( val.i_int >= 0 && val.i_int <= 51 ) p_sys->param.rc.i_qp_step = val.i_int;
553 var_Get( p_enc, SOUT_CFG_PREFIX "qpmin", &val );
554 if( val.i_int >= 0 && val.i_int <= 51 ) i_qmin = val.i_int;
555 var_Get( p_enc, SOUT_CFG_PREFIX "qpmax", &val );
556 if( val.i_int >= 0 && val.i_int <= 51 ) i_qmax = val.i_int;
558 var_Get( p_enc, SOUT_CFG_PREFIX "qp", &val );
559 if( val.i_int >= 0 && val.i_int <= 51 )
561 if( i_qmin > val.i_int ) i_qmin = val.i_int;
562 if( i_qmax < val.i_int ) i_qmax = val.i_int;
564 #if X264_BUILD >= 0x000a
565 p_sys->param.rc.i_qp_constant = val.i_int;
566 p_sys->param.rc.i_qp_min = i_qmin;
567 p_sys->param.rc.i_qp_max = i_qmax;
569 p_sys->param.i_qp_constant = val.i_int;
574 var_Get( p_enc, SOUT_CFG_PREFIX "ratetol", &val );
575 p_sys->param.rc.f_rate_tolerance = val.f_float;
577 var_Get( p_enc, SOUT_CFG_PREFIX "vbv-init", &val );
578 p_sys->param.rc.f_vbv_buffer_init = val.f_float;
580 var_Get( p_enc, SOUT_CFG_PREFIX "vbv-bufsize", &val );
581 p_sys->param.rc.i_vbv_buffer_size = val.i_int;
583 /* x264 vbv-bufsize = 0 (default). if not provided set period
584 in seconds for local maximum bitrate (cache/bufsize) based
585 on average bitrate. */
587 p_sys->param.rc.i_vbv_buffer_size = p_sys->param.rc.i_bitrate * 2;
589 /* max bitrate = average bitrate -> CBR */
590 var_Get( p_enc, SOUT_CFG_PREFIX "vbv-maxrate", &val );
591 p_sys->param.rc.i_vbv_max_bitrate = val.i_int;
594 p_sys->param.rc.i_rc_buffer_size = p_sys->param.rc.i_bitrate;
595 p_sys->param.rc.i_rc_init_buffer = p_sys->param.rc.i_bitrate / 4;
598 var_Get( p_enc, SOUT_CFG_PREFIX "cabac", &val );
599 p_sys->param.b_cabac = val.b_bool;
601 /* disable deblocking when nf (no loop filter) is enabled */
602 var_Get( p_enc, SOUT_CFG_PREFIX "nf", &val );
603 p_sys->param.b_deblocking_filter = !val.b_bool;
605 var_Get( p_enc, SOUT_CFG_PREFIX "ipratio", &val );
606 p_sys->param.rc.f_ip_factor = val.f_float;
608 var_Get( p_enc, SOUT_CFG_PREFIX "pbratio", &val );
609 p_sys->param.rc.f_pb_factor = val.f_float;
611 var_Get( p_enc, SOUT_CFG_PREFIX "qcomp", &val );
612 p_sys->param.rc.f_qcompress = val.f_float;
614 var_Get( p_enc, SOUT_CFG_PREFIX "cplxblur", &val );
615 p_sys->param.rc.f_complexity_blur = val.f_float;
617 var_Get( p_enc, SOUT_CFG_PREFIX "qblur", &val );
618 p_sys->param.rc.f_qblur = val.f_float;
620 #if X264_BUILD >= 0x000e
621 var_Get( p_enc, SOUT_CFG_PREFIX "verbose", &val );
622 if( val.b_bool ) p_sys->param.i_log_level = X264_LOG_DEBUG;
625 var_Get( p_enc, SOUT_CFG_PREFIX "keyint", &val );
626 #if X264_BUILD >= 0x000e
627 if( val.i_int > 0 ) p_sys->param.i_keyint_max = val.i_int;
629 if( val.i_int > 0 ) p_sys->param.i_iframe = val.i_int;
632 var_Get( p_enc, SOUT_CFG_PREFIX "min-keyint", &val );
633 #if X264_BUILD >= 0x000e
634 if( val.i_int > 0 ) p_sys->param.i_keyint_min = val.i_int;
636 if( val.i_int > 0 ) p_sys->param.i_idrframe = val.i_int;
639 var_Get( p_enc, SOUT_CFG_PREFIX "bframes", &val );
640 if( val.i_int >= 0 && val.i_int <= 16 )
641 p_sys->param.i_bframe = val.i_int;
644 var_Get( p_enc, SOUT_CFG_PREFIX "bpyramid", &val );
645 p_sys->param.b_bframe_pyramid = val.b_bool;
648 var_Get( p_enc, SOUT_CFG_PREFIX "ref", &val );
649 if( val.i_int > 0 && val.i_int <= 15 )
650 p_sys->param.i_frame_reference = val.i_int;
652 var_Get( p_enc, SOUT_CFG_PREFIX "scenecut", &val );
653 #if X264_BUILD >= 0x000b
654 if( val.i_int >= -1 && val.i_int <= 100 )
655 p_sys->param.i_scenecut_threshold = val.i_int;
659 var_Get( p_enc, SOUT_CFG_PREFIX "subme", &val );
660 if( val.i_int >= 1 && val.i_int <= 6 )
661 p_sys->param.analyse.i_subpel_refine = val.i_int;
663 if( val.i_int >= 1 && val.i_int <= 5 )
664 p_sys->param.analyse.i_subpel_refine = val.i_int;
668 var_Get( p_enc, SOUT_CFG_PREFIX "me", &val );
669 if( !strcmp( val.psz_string, "dia" ) )
671 p_sys->param.analyse.i_me_method = X264_ME_DIA;
673 else if( !strcmp( val.psz_string, "hex" ) )
675 p_sys->param.analyse.i_me_method = X264_ME_HEX;
677 else if( !strcmp( val.psz_string, "umh" ) )
679 p_sys->param.analyse.i_me_method = X264_ME_UMH;
681 else if( !strcmp( val.psz_string, "esa" ) )
683 p_sys->param.analyse.i_me_method = X264_ME_ESA;
685 if( val.psz_string ) free( val.psz_string );
687 var_Get( p_enc, SOUT_CFG_PREFIX "merange", &val );
688 if( val.i_int >= 1 && val.i_int <= 64 )
689 p_sys->param.analyse.i_me_range = val.i_int;
692 var_Get( p_enc, SOUT_CFG_PREFIX "direct", &val );
693 if( !strcmp( val.psz_string, "none" ) )
695 p_sys->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_NONE;
697 else if( !strcmp( val.psz_string, "spatial" ) )
699 p_sys->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
701 else if( !strcmp( val.psz_string, "temporal" ) )
703 p_sys->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_TEMPORAL;
705 if( val.psz_string ) free( val.psz_string );
707 var_Get( p_enc, SOUT_CFG_PREFIX "psnr", &val );
708 p_sys->param.analyse.b_psnr = val.b_bool;
710 #if X264_BUILD >= 0x0012
711 var_Get( p_enc, SOUT_CFG_PREFIX "weightb", &val );
712 p_sys->param.analyse.b_weighted_bipred = val.b_bool;
715 #if X264_BUILD >= 0x0013
716 var_Get( p_enc, SOUT_CFG_PREFIX "b-adapt", &val );
717 p_sys->param.b_bframe_adaptive = val.b_bool;
719 var_Get( p_enc, SOUT_CFG_PREFIX "b-bias", &val );
720 if( val.i_int >= -100 && val.i_int <= 100 )
721 p_sys->param.i_bframe_bias = val.i_int;
725 var_Get( p_enc, SOUT_CFG_PREFIX "chroma-me", &val );
726 p_sys->param.analyse.b_chroma_me = val.b_bool;
727 var_Get( p_enc, SOUT_CFG_PREFIX "chroma-qp-offset", &val );
728 p_sys->param.analyse.i_chroma_qp_offset = val.i_int;
732 var_Get( p_enc, SOUT_CFG_PREFIX "mixed-refs", &val );
733 p_sys->param.analyse.b_mixed_references = val.b_bool;
737 var_Get( p_enc, SOUT_CFG_PREFIX "crf", &val );
738 if( val.i_int >= 0 && val.i_int <= 51 ) /* crf != 0 overrides qp */
739 p_sys->param.rc.i_rf_constant = val.i_int;
743 var_Get( p_enc, SOUT_CFG_PREFIX "trellis", &val );
744 if( val.i_int >= 0 && val.i_int <= 2 )
745 p_sys->param.analyse.i_trellis = val.i_int;
749 var_Get( p_enc, SOUT_CFG_PREFIX "b-rdo", &val );
750 p_sys->param.analyse.b_bframe_rdo = val.b_bool;
754 var_Get( p_enc, SOUT_CFG_PREFIX "fast-pskip", &val );
755 p_sys->param.analyse.b_fast_pskip = val.b_bool;
759 var_Get( p_enc, SOUT_CFG_PREFIX "bime", &val );
760 p_sys->param.analyse.b_bidir_me = val.b_bool;
764 var_Get( p_enc, SOUT_CFG_PREFIX "nr", &val );
765 p_sys->param.analyse.i_noise_reduction = val.i_int;
768 var_Get( p_enc, SOUT_CFG_PREFIX "asm", &val );
769 if( !val.b_bool ) p_sys->param.cpu = 0;
771 #ifndef X264_ANALYSE_BSUB16x16
772 # define X264_ANALYSE_BSUB16x16 0
774 var_Get( p_enc, SOUT_CFG_PREFIX "analyse", &val );
775 if( !strcmp( val.psz_string, "none" ) )
777 p_sys->param.analyse.inter = 0;
779 else if( !strcmp( val.psz_string, "fast" ) )
781 p_sys->param.analyse.inter = X264_ANALYSE_I4x4;
783 else if( !strcmp( val.psz_string, "normal" ) )
785 p_sys->param.analyse.inter =
787 X264_ANALYSE_PSUB16x16;
788 #ifdef X264_ANALYSE_I8x8
789 p_sys->param.analyse.inter |= X264_ANALYSE_I8x8;
792 else if( !strcmp( val.psz_string, "slow" ) )
794 p_sys->param.analyse.inter =
796 X264_ANALYSE_PSUB16x16 |
797 X264_ANALYSE_BSUB16x16;
798 #ifdef X264_ANALYSE_I8x8
799 p_sys->param.analyse.inter |= X264_ANALYSE_I8x8;
802 else if( !strcmp( val.psz_string, "all" ) )
804 p_sys->param.analyse.inter =
806 X264_ANALYSE_PSUB16x16 |
807 X264_ANALYSE_BSUB16x16 |
808 X264_ANALYSE_PSUB8x8;
809 #ifdef X264_ANALYSE_I8x8
810 p_sys->param.analyse.inter |= X264_ANALYSE_I8x8;
813 if( val.psz_string ) free( val.psz_string );
816 var_Get( p_enc, SOUT_CFG_PREFIX "8x8dct", &val );
817 p_sys->param.analyse.b_transform_8x8 = val.b_bool;
820 if( p_enc->fmt_in.video.i_aspect > 0 )
822 int64_t i_num, i_den;
823 int i_dst_num, i_dst_den;
825 i_num = p_enc->fmt_in.video.i_aspect *
826 (int64_t)p_enc->fmt_in.video.i_height;
827 i_den = VOUT_ASPECT_FACTOR * p_enc->fmt_in.video.i_width;
828 vlc_ureduce( &i_dst_num, &i_dst_den, i_num, i_den, 0 );
830 p_sys->param.vui.i_sar_width = i_dst_num;
831 p_sys->param.vui.i_sar_height = i_dst_den;
833 if( p_enc->fmt_in.video.i_frame_rate_base > 0 )
835 p_sys->param.i_fps_num = p_enc->fmt_in.video.i_frame_rate;
836 p_sys->param.i_fps_den = p_enc->fmt_in.video.i_frame_rate_base;
838 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMX) )
840 p_sys->param.cpu &= ~X264_CPU_MMX;
842 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMXEXT) )
844 p_sys->param.cpu &= ~X264_CPU_MMXEXT;
846 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_SSE) )
848 p_sys->param.cpu &= ~X264_CPU_SSE;
850 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_SSE2) )
852 p_sys->param.cpu &= ~X264_CPU_SSE2;
856 if( p_enc->i_threads >= 1 )
857 p_sys->param.i_threads = p_enc->i_threads;
860 /* Open the encoder */
861 p_sys->h = x264_encoder_open( &p_sys->param );
864 p_sys->i_buffer = 4 * p_enc->fmt_in.video.i_width *
865 p_enc->fmt_in.video.i_height + 1000;
866 p_sys->p_buffer = malloc( p_sys->i_buffer );
868 /* get the globals headers */
869 p_enc->fmt_out.i_extra = 0;
870 p_enc->fmt_out.p_extra = NULL;
873 x264_encoder_headers( p_sys->h, &nal, &i_nal );
874 for( i = 0; i < i_nal; i++ )
876 int i_size = p_sys->i_buffer;
878 x264_nal_encode( p_sys->p_buffer, &i_size, 1, &nal[i] );
880 p_enc->fmt_out.p_extra = realloc( p_enc->fmt_out.p_extra, p_enc->fmt_out.i_extra + i_size );
882 memcpy( p_enc->fmt_out.p_extra + p_enc->fmt_out.i_extra,
883 p_sys->p_buffer, i_size );
885 p_enc->fmt_out.i_extra += i_size;
892 /****************************************************************************
894 ****************************************************************************/
895 static block_t *Encode( encoder_t *p_enc, picture_t *p_pict )
897 encoder_sys_t *p_sys = p_enc->p_sys;
904 memset( &pic, 0, sizeof( x264_picture_t ) );
905 pic.i_pts = p_pict->date;
906 pic.img.i_csp = X264_CSP_I420;
907 pic.img.i_plane = p_pict->i_planes;
908 for( i = 0; i < p_pict->i_planes; i++ )
910 pic.img.plane[i] = p_pict->p[i].p_pixels;
911 pic.img.i_stride[i] = p_pict->p[i].i_pitch;
914 #if X264_BUILD >= 0x0013
915 x264_encoder_encode( p_sys->h, &nal, &i_nal, &pic, &pic );
917 x264_encoder_encode( p_sys->h, &nal, &i_nal, &pic );
920 if( !i_nal ) return NULL;
922 for( i = 0, i_out = 0; i < i_nal; i++ )
924 int i_size = p_sys->i_buffer - i_out;
925 x264_nal_encode( p_sys->p_buffer + i_out, &i_size, 1, &nal[i] );
930 p_block = block_New( p_enc, i_out );
931 memcpy( p_block->p_buffer, p_sys->p_buffer, i_out );
933 if( pic.i_type == X264_TYPE_IDR || pic.i_type == X264_TYPE_I )
934 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
935 else if( pic.i_type == X264_TYPE_P )
936 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
937 else if( pic.i_type == X264_TYPE_B )
938 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
940 /* This isn't really valid for streams with B-frames */
941 p_block->i_length = I64C(1000000) *
942 p_enc->fmt_in.video.i_frame_rate_base /
943 p_enc->fmt_in.video.i_frame_rate;
945 p_block->i_dts = p_block->i_pts = pic.i_pts;
947 if( p_sys->param.i_bframe > 0 )
949 if( p_block->i_flags & BLOCK_FLAG_TYPE_B )
951 p_block->i_dts = p_block->i_pts;
955 if( p_sys->i_last_ref_pts )
957 p_block->i_dts = p_sys->i_last_ref_pts;
961 /* Let's put something sensible */
962 p_block->i_dts = p_block->i_pts;
965 p_sys->i_last_ref_pts = p_block->i_pts;
972 /*****************************************************************************
973 * CloseEncoder: x264 encoder destruction
974 *****************************************************************************/
975 static void Close( vlc_object_t *p_this )
977 encoder_t *p_enc = (encoder_t *)p_this;
978 encoder_sys_t *p_sys = p_enc->p_sys;
980 x264_encoder_close( p_sys->h );
981 free( p_sys->p_buffer );