1 /*****************************************************************************
2 * video.c: video decoder using the libavcodec library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VLC authors and VideoLAN
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_codec.h>
34 #include <vlc_avcodec.h>
38 #include <libavcodec/avcodec.h>
39 #include <libavutil/mem.h>
40 #include <libavutil/pixdesc.h>
45 /*****************************************************************************
46 * decoder_sys_t : decoder descriptor
47 *****************************************************************************/
50 AVCODEC_COMMON_MEMBERS
52 /* Video decoder specific part */
57 /* for frame skipping algo */
59 enum AVDiscard i_skip_frame;
60 enum AVDiscard i_skip_idct;
62 /* how many decoded frames are late */
64 mtime_t i_late_frames_start;
66 /* for direct rendering */
67 bool b_direct_rendering;
68 int i_direct_rendering_used;
72 /* Hack to force display of still pictures */
77 #if LIBAVCODEC_VERSION_MAJOR < 54
78 AVPaletteControl palette;
92 #ifdef HAVE_AVCODEC_MT
93 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
94 # define post_mt(s) vlc_sem_post( &s->sem_mt )
100 /*****************************************************************************
102 *****************************************************************************/
103 static void ffmpeg_InitCodec ( decoder_t * );
104 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
105 #if LIBAVCODEC_VERSION_MAJOR >= 55
106 static int lavc_GetFrame(struct AVCodecContext *, AVFrame *, int);
108 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
109 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
111 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
112 const enum PixelFormat * );
114 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
116 uint8_t *p = (uint8_t*)&fcc;
117 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
120 /*****************************************************************************
122 *****************************************************************************/
124 /* Returns a new picture buffer */
125 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
126 AVCodecContext *p_context )
128 decoder_sys_t *p_sys = p_dec->p_sys;
129 int width = p_context->coded_width;
130 int height = p_context->coded_height;
132 if( p_sys->p_va == NULL )
134 int aligns[AV_NUM_DATA_POINTERS];
136 avcodec_align_dimensions2(p_context, &width, &height, aligns);
139 if( width == 0 || height == 0)
140 return NULL; /* invalid display size */
142 p_dec->fmt_out.video.i_width = width;
143 p_dec->fmt_out.video.i_height = height;
145 if( width != p_context->width || height != p_context->height )
147 p_dec->fmt_out.video.i_visible_width = p_context->width;
148 p_dec->fmt_out.video.i_visible_height = p_context->height;
152 p_dec->fmt_out.video.i_visible_width = width;
153 p_dec->fmt_out.video.i_visible_height = height;
156 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
158 /* we are doomed, but not really, because most codecs set their pix_fmt
160 * FIXME does it make sense here ? */
161 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
163 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
165 /* If an aspect-ratio was specified in the input format then force it */
166 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
168 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
169 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
173 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
174 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
176 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
178 p_dec->fmt_out.video.i_sar_num = 1;
179 p_dec->fmt_out.video.i_sar_den = 1;
183 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
184 p_dec->fmt_in.video.i_frame_rate_base > 0 )
186 p_dec->fmt_out.video.i_frame_rate =
187 p_dec->fmt_in.video.i_frame_rate;
188 p_dec->fmt_out.video.i_frame_rate_base =
189 p_dec->fmt_in.video.i_frame_rate_base;
191 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
193 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
194 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num * __MAX( p_context->ticks_per_frame, 1 );
197 return decoder_NewPicture( p_dec );
200 /*****************************************************************************
201 * InitVideo: initialize the video decoder
202 *****************************************************************************
203 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
204 * opened (done after the first decoded frame).
205 *****************************************************************************/
206 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
207 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
209 decoder_sys_t *p_sys;
212 /* Allocate the memory needed to store the decoder's structure */
213 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
216 p_codec->type = AVMEDIA_TYPE_VIDEO;
217 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
218 p_context->codec_id = i_codec_id;
219 p_sys->p_context = p_context;
220 p_sys->p_codec = p_codec;
221 p_sys->i_codec_id = i_codec_id;
222 p_sys->psz_namecodec = psz_namecodec;
223 p_sys->p_ff_pic = avcodec_alloc_frame();
224 p_sys->b_delayed_open = true;
226 vlc_sem_init( &p_sys->sem_mt, 0 );
228 /* ***** Fill p_context with init values ***** */
229 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
231 /* ***** Get configuration of ffmpeg plugin ***** */
232 p_sys->p_context->workaround_bugs =
233 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
234 p_sys->p_context->err_recognition =
235 var_InheritInteger( p_dec, "avcodec-error-resilience" );
237 if( var_CreateGetBool( p_dec, "grayscale" ) )
238 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
240 /* ***** Output always the frames ***** */
241 #if LIBAVCODEC_VERSION_CHECK(55, 23, 1, 40, 101)
242 p_sys->p_context->flags |= CODEC_FLAG_OUTPUT_CORRUPT;
245 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
246 if( i_val ) p_sys->p_context->debug_mv = i_val;
248 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
249 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
250 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
251 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
252 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
254 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
255 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
257 /* ***** libavcodec frame skipping ***** */
258 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
260 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-frame" );
261 if( i_val >= 4 ) p_sys->p_context->skip_frame = AVDISCARD_ALL;
262 else if( i_val == 3 ) p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
263 else if( i_val == 2 ) p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
264 else if( i_val == 1 ) p_sys->p_context->skip_frame = AVDISCARD_NONREF;
265 else if( i_val == -1 ) p_sys->p_context->skip_frame = AVDISCARD_NONE;
266 else p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
267 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
269 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-idct" );
270 if( i_val >= 4 ) p_sys->p_context->skip_idct = AVDISCARD_ALL;
271 else if( i_val == 3 ) p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
272 else if( i_val == 2 ) p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
273 else if( i_val == 1 ) p_sys->p_context->skip_idct = AVDISCARD_NONREF;
274 else if( i_val == -1 ) p_sys->p_context->skip_idct = AVDISCARD_NONE;
275 else p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
276 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
278 /* ***** libavcodec direct rendering ***** */
279 p_sys->b_direct_rendering = false;
280 p_sys->i_direct_rendering_used = -1;
281 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
282 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
283 /* No idea why ... but this fixes flickering on some TSCC streams */
284 p_sys->i_codec_id != AV_CODEC_ID_TSCC && p_sys->i_codec_id != AV_CODEC_ID_CSCD &&
285 p_sys->i_codec_id != AV_CODEC_ID_CINEPAK &&
286 !p_sys->p_context->debug_mv )
288 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
289 * so we need to do another check in ffmpeg_GetFrameBuf() */
290 p_sys->b_direct_rendering = true;
293 /* libavcodec doesn't properly release old pictures when frames are skipped */
294 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
295 if( p_sys->b_direct_rendering )
297 msg_Dbg( p_dec, "trying to use direct rendering" );
298 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
302 msg_Dbg( p_dec, "direct rendering is disabled" );
305 p_sys->p_context->get_format = ffmpeg_GetFormat;
306 /* Always use our get_buffer wrapper so we can calculate the
308 #if LIBAVCODEC_VERSION_MAJOR >= 55
309 p_sys->p_context->get_buffer2 = lavc_GetFrame;
311 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
312 p_sys->p_context->reget_buffer = avcodec_default_reget_buffer;
313 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
315 p_sys->p_context->opaque = p_dec;
317 #ifdef HAVE_AVCODEC_MT
318 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
319 if( i_thread_count <= 0 )
321 i_thread_count = vlc_GetCPUCount();
322 if( i_thread_count > 1 )
325 //FIXME: take in count the decoding time
326 i_thread_count = __MIN( i_thread_count, 4 );
328 i_thread_count = __MIN( i_thread_count, 16 );
329 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
330 p_sys->p_context->thread_count = i_thread_count;
331 p_sys->p_context->thread_safe_callbacks = true;
335 case AV_CODEC_ID_MPEG4:
336 case AV_CODEC_ID_H263:
337 p_sys->p_context->thread_type = 0;
339 case AV_CODEC_ID_MPEG1VIDEO:
340 case AV_CODEC_ID_MPEG2VIDEO:
341 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
343 # if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 1, 0))
344 case AV_CODEC_ID_H264:
345 case AV_CODEC_ID_VC1:
346 case AV_CODEC_ID_WMV3:
347 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
351 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
352 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
355 /* ***** misc init ***** */
356 p_sys->i_pts = VLC_TS_INVALID;
357 p_sys->b_has_b_frames = false;
358 p_sys->b_first_frame = true;
359 p_sys->b_flush = false;
360 p_sys->i_late_frames = 0;
362 /* Set output properties */
363 p_dec->fmt_out.i_cat = VIDEO_ES;
364 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
366 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
367 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
369 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
371 p_dec->fmt_out.video.orientation = p_dec->fmt_in.video.orientation;
373 #if LIBAVCODEC_VERSION_MAJOR < 54
375 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
376 if( p_dec->fmt_in.video.p_palette )
378 p_sys->palette.palette_changed = 1;
380 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
386 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
387 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
388 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
389 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
391 p_sys->palette.palette[i] = c.u;
393 p_sys->p_context->palctrl = &p_sys->palette;
395 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
396 if( p_dec->fmt_out.video.p_palette )
397 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
399 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
401 p_sys->p_context->palctrl = &p_sys->palette;
404 if( p_dec->fmt_in.video.p_palette ) {
405 p_sys->palette_sent = false;
406 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
407 if( p_dec->fmt_out.video.p_palette )
408 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
410 p_sys->palette_sent = true;
413 /* ***** init this codec with special data ***** */
414 ffmpeg_InitCodec( p_dec );
416 /* ***** Open the codec ***** */
417 if( ffmpeg_OpenCodec( p_dec ) < 0 )
419 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
420 av_free( p_sys->p_ff_pic );
421 vlc_sem_destroy( &p_sys->sem_mt );
429 /*****************************************************************************
430 * DecodeVideo: Called to decode one or more frames
431 *****************************************************************************/
432 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
434 decoder_sys_t *p_sys = p_dec->p_sys;
435 AVCodecContext *p_context = p_sys->p_context;
437 int b_null_size = false;
443 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
445 ffmpeg_InitCodec( p_dec );
446 if( p_sys->b_delayed_open )
448 if( ffmpeg_OpenCodec( p_dec ) )
449 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
454 if(!p_block && !(p_sys->p_codec->capabilities & CODEC_CAP_DELAY) )
457 if( p_sys->b_delayed_open )
460 block_Release( p_block );
466 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
468 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
470 p_sys->i_late_frames = 0;
473 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
474 avcodec_flush_buffers( p_context );
477 block_Release( p_block );
481 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
483 /* Do not care about late frames when prerolling
484 * TODO avoid decoding of non reference frame
485 * (ie all B except for H264 where it depends only on nal_ref_idc) */
486 p_sys->i_late_frames = 0;
490 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
491 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
493 if( p_sys->i_pts > VLC_TS_INVALID )
495 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
498 block_Release( p_block );
499 p_sys->i_late_frames--;
500 msg_Err( p_dec, "more than 5 seconds of late video -> "
501 "dropping frame (computer too slow ?)" );
505 /* A good idea could be to decode all I pictures and see for the other */
506 if( !p_dec->b_pace_control &&
508 (p_sys->i_late_frames > 4) )
511 if( p_sys->i_late_frames < 12 )
513 p_context->skip_frame =
514 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
515 AVDISCARD_NONREF : p_sys->i_skip_frame;
519 /* picture too late, won't decode
520 * but break picture until a new I, and for mpeg4 ...*/
521 p_sys->i_late_frames--; /* needed else it will never be decrease */
523 block_Release( p_block );
524 msg_Warn( p_dec, "More than 4 late frames, dropping frame" );
530 if( p_sys->b_hurry_up )
531 p_context->skip_frame = p_sys->i_skip_frame;
532 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
538 if( p_context->width <= 0 || p_context->height <= 0 )
540 if( p_sys->b_hurry_up )
541 p_context->skip_frame = p_sys->i_skip_frame;
544 else if( !b_drawpicture )
546 /* It creates broken picture
547 * FIXME either our parser or ffmpeg is broken */
549 if( p_sys->b_hurry_up )
550 p_context->skip_frame = __MAX( p_context->skip_frame,
556 * Do the actual decoding now */
558 /* Don't forget that libavcodec requires a little more bytes
559 * that the real frame size */
560 if( p_block && p_block->i_buffer > 0 )
562 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
564 p_block = block_Realloc( p_block, 0,
565 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
568 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
570 memset( p_block->p_buffer + p_block->i_buffer, 0,
571 FF_INPUT_BUFFER_PADDING_SIZE );
574 while( !p_block || p_block->i_buffer > 0 || p_sys->b_flush )
576 int i_used, b_gotpicture;
582 av_init_packet( &pkt );
585 pkt.data = p_block->p_buffer;
586 pkt.size = p_block->i_buffer;
587 pkt.pts = p_block->i_pts;
588 pkt.dts = p_block->i_dts;
592 /* Return delayed frames if codec has CODEC_CAP_DELAY */
597 #if LIBAVCODEC_VERSION_MAJOR >= 54
598 if( !p_sys->palette_sent )
600 uint8_t *pal = av_packet_new_side_data(&pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
602 memcpy(pal, p_dec->fmt_in.video.p_palette->palette, AVPALETTE_SIZE);
603 p_sys->palette_sent = true;
608 /* Make sure we don't reuse the same timestamps twice */
612 p_block->i_dts = VLC_TS_INVALID;
615 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
616 &b_gotpicture, &pkt );
618 if( b_null_size && !p_sys->b_flush &&
619 p_context->width > 0 && p_context->height > 0 )
621 /* Reparse it to not drop the I frame */
623 if( p_sys->b_hurry_up )
624 p_context->skip_frame = p_sys->i_skip_frame;
625 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
626 &b_gotpicture, &pkt );
631 p_sys->b_first_frame = true;
635 if( p_block->i_buffer <= 0 )
636 p_sys->b_flush = false;
641 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
643 block_Release( p_block );
646 else if( (unsigned)i_used > p_block->i_buffer ||
647 p_context->thread_count > 1 )
649 i_used = p_block->i_buffer;
653 p_block->i_buffer -= i_used;
654 p_block->p_buffer += i_used;
657 /* Nothing to display */
660 if( i_used == 0 ) break;
664 /* Sanity check (seems to be needed for some streams) */
665 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
667 p_sys->b_has_b_frames = true;
670 /* Compute the PTS */
672 p_sys->p_ff_pic->pkt_pts;
673 if (i_pts <= VLC_TS_INVALID)
674 i_pts = p_sys->p_ff_pic->pkt_dts;
676 if( i_pts <= VLC_TS_INVALID )
677 i_pts = p_sys->i_pts;
679 /* Interpolate the next PTS */
680 if( i_pts > VLC_TS_INVALID )
681 p_sys->i_pts = i_pts;
682 if( p_sys->i_pts > VLC_TS_INVALID )
684 /* interpolate the next PTS */
685 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
686 p_dec->fmt_in.video.i_frame_rate_base > 0 )
688 p_sys->i_pts += INT64_C(1000000) *
689 (2 + p_sys->p_ff_pic->repeat_pict) *
690 p_dec->fmt_in.video.i_frame_rate_base /
691 (2 * p_dec->fmt_in.video.i_frame_rate);
693 else if( p_context->time_base.den > 0 )
695 int i_tick = p_context->ticks_per_frame;
699 p_sys->i_pts += INT64_C(1000000) *
700 (2 + p_sys->p_ff_pic->repeat_pict) *
701 i_tick * p_context->time_base.num /
702 (2 * p_context->time_base.den);
706 /* Update frame late count (except when doing preroll) */
707 mtime_t i_display_date = 0;
708 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
709 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
711 if( i_display_date > 0 && i_display_date <= mdate() )
713 p_sys->i_late_frames++;
714 if( p_sys->i_late_frames == 1 )
715 p_sys->i_late_frames_start = mdate();
719 p_sys->i_late_frames = 0;
722 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
725 if( p_sys->p_va != NULL || p_sys->p_ff_pic->opaque == NULL )
727 /* Get a new picture */
728 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
732 block_Release( p_block );
736 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
738 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
742 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
743 decoder_LinkPicture( p_dec, p_pic );
746 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
748 /* Fetch again the aspect ratio in case it changed */
749 p_dec->fmt_out.video.i_sar_num
750 = p_context->sample_aspect_ratio.num;
751 p_dec->fmt_out.video.i_sar_den
752 = p_context->sample_aspect_ratio.den;
754 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
756 p_dec->fmt_out.video.i_sar_num = 1;
757 p_dec->fmt_out.video.i_sar_den = 1;
761 /* Send decoded frame to vout */
762 if( i_pts > VLC_TS_INVALID)
766 if( p_sys->b_first_frame )
768 /* Hack to force display of still pictures */
769 p_sys->b_first_frame = false;
770 p_pic->b_force = true;
773 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
774 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
775 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
781 decoder_DeletePicture( p_dec, p_pic );
786 block_Release( p_block );
790 /*****************************************************************************
791 * EndVideo: decoder destruction
792 *****************************************************************************
793 * This function is called when the thread ends after a successful
795 *****************************************************************************/
796 void EndVideoDec( decoder_t *p_dec )
798 decoder_sys_t *p_sys = p_dec->p_sys;
802 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
803 if( p_sys->p_context->codec )
804 avcodec_flush_buffers( p_sys->p_context );
808 if( p_sys->p_ff_pic )
809 av_free( p_sys->p_ff_pic );
812 vlc_va_Delete( p_sys->p_va );
814 vlc_sem_destroy( &p_sys->sem_mt );
817 /*****************************************************************************
818 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
819 *****************************************************************************/
820 static void ffmpeg_InitCodec( decoder_t *p_dec )
822 decoder_sys_t *p_sys = p_dec->p_sys;
823 int i_size = p_dec->fmt_in.i_extra;
825 if( !i_size ) return;
827 if( p_sys->i_codec_id == AV_CODEC_ID_SVQ3 )
831 p_sys->p_context->extradata_size = i_size + 12;
832 p = p_sys->p_context->extradata =
833 av_malloc( p_sys->p_context->extradata_size +
834 FF_INPUT_BUFFER_PADDING_SIZE );
838 memcpy( &p[0], "SVQ3", 4 );
839 memset( &p[4], 0, 8 );
840 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
842 /* Now remove all atoms before the SMI one */
843 if( p_sys->p_context->extradata_size > 0x5a &&
844 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
846 uint8_t *psz = &p[0x52];
848 while( psz < &p[p_sys->p_context->extradata_size - 8] )
850 int i_size = GetDWBE( psz );
853 /* FIXME handle 1 as long size */
856 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
858 memmove( &p[0x52], psz,
859 &p[p_sys->p_context->extradata_size] - psz );
869 p_sys->p_context->extradata_size = i_size;
870 p_sys->p_context->extradata =
871 av_malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
872 if( p_sys->p_context->extradata )
874 memcpy( p_sys->p_context->extradata,
875 p_dec->fmt_in.p_extra, i_size );
876 memset( p_sys->p_context->extradata + i_size,
877 0, FF_INPUT_BUFFER_PADDING_SIZE );
882 /*****************************************************************************
883 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
884 * picture_t structure (when not in direct rendering mode).
885 *****************************************************************************/
886 static void ffmpeg_CopyPicture( decoder_t *p_dec,
887 picture_t *p_pic, AVFrame *p_ff_pic )
889 decoder_sys_t *p_sys = p_dec->p_sys;
893 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic->opaque,
896 else if( FindVlcChroma( p_sys->p_context->pix_fmt ) )
898 int i_plane, i_size, i_line;
899 uint8_t *p_dst, *p_src;
900 int i_src_stride, i_dst_stride;
902 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
904 p_src = p_ff_pic->data[i_plane];
905 p_dst = p_pic->p[i_plane].p_pixels;
906 i_src_stride = p_ff_pic->linesize[i_plane];
907 i_dst_stride = p_pic->p[i_plane].i_pitch;
909 i_size = __MIN( i_src_stride, i_dst_stride );
910 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
913 memcpy( p_dst, p_src, i_size );
914 p_src += i_src_stride;
915 p_dst += i_dst_stride;
921 const char *name = av_get_pix_fmt_name( p_sys->p_context->pix_fmt );
922 msg_Err( p_dec, "Unsupported decoded output format %d (%s)",
923 p_sys->p_context->pix_fmt, name ? name : "unknown" );
928 #if LIBAVCODEC_VERSION_MAJOR >= 55
929 static int lavc_va_GetFrame(struct AVCodecContext *ctx, AVFrame *frame,
932 decoder_t *dec = ctx->opaque;
933 decoder_sys_t *sys = dec->p_sys;
934 vlc_va_t *va = sys->p_va;
936 if (vlc_va_Setup(va, &ctx->hwaccel_context, &dec->fmt_out.video.i_chroma,
937 ctx->coded_width, ctx->coded_height))
939 msg_Err(dec, "hardware acceleration setup failed");
942 if (vlc_va_Get(va, &frame->opaque, &frame->data[0]))
944 msg_Err(dec, "hardware acceleration picture allocation failed");
947 /* data[0] must be non-NULL for libavcodec internal checks.
948 * data[3] actually contains the format-specific surface handle. */
949 frame->data[3] = frame->data[0];
951 frame->buf[0] = av_buffer_create(frame->data[0], 0, va->release,
953 if (unlikely(frame->buf[0] == NULL))
955 vlc_va_Release(va, frame->opaque, frame->data[0]);
958 assert(frame->data[0] != NULL);
969 static void lavc_dr_ReleaseFrame(void *opaque, uint8_t *data)
971 lavc_pic_ref_t *ref = opaque;
973 decoder_UnlinkPicture(ref->decoder, ref->picture);
978 static picture_t *lavc_dr_GetFrame(struct AVCodecContext *ctx,
979 AVFrame *frame, int flags)
981 decoder_t *dec = (decoder_t *)ctx->opaque;
982 decoder_sys_t *sys = dec->p_sys;
984 if (GetVlcChroma(&dec->fmt_out.video, ctx->pix_fmt) != VLC_SUCCESS)
986 dec->fmt_out.i_codec = dec->fmt_out.video.i_chroma;
987 if (ctx->pix_fmt == PIX_FMT_PAL8)
990 int width = frame->width;
991 int height = frame->height;
992 int aligns[AV_NUM_DATA_POINTERS];
994 avcodec_align_dimensions2(ctx, &width, &height, aligns);
996 picture_t *pic = ffmpeg_NewPictBuf(dec, ctx);
1000 /* Check that the picture is suitable for libavcodec */
1001 if (pic->p[0].i_pitch < width * pic->p[0].i_pixel_pitch)
1003 if (sys->i_direct_rendering_used != 0)
1004 msg_Dbg(dec, "plane 0: pitch too small (%d/%d*%d)",
1005 pic->p[0].i_pitch, width, pic->p[0].i_pixel_pitch);
1009 if (pic->p[0].i_lines < height)
1011 if (sys->i_direct_rendering_used != 0)
1012 msg_Dbg(dec, "plane 0: lines too few (%d/%d)",
1013 pic->p[0].i_lines, height);
1017 for (int i = 0; i < pic->i_planes; i++)
1019 if (pic->p[i].i_pitch % aligns[i])
1021 if (sys->i_direct_rendering_used != 0)
1022 msg_Dbg(dec, "plane %d: pitch not aligned (%d%%%d)",
1023 i, pic->p[i].i_pitch, aligns[i]);
1026 if (((uintptr_t)pic->p[i].p_pixels) % aligns[i])
1028 if (sys->i_direct_rendering_used != 0)
1029 msg_Warn(dec, "plane %d not aligned", i);
1034 /* Allocate buffer references */
1035 for (int i = 0; i < pic->i_planes; i++)
1037 lavc_pic_ref_t *ref = malloc(sizeof (*ref));
1042 decoder_LinkPicture(dec, pic);
1044 uint8_t *data = pic->p[i].p_pixels;
1045 int size = pic->p[i].i_pitch * pic->p[i].i_lines;
1047 frame->buf[i] = av_buffer_create(data, size, lavc_dr_ReleaseFrame,
1049 if (unlikely(frame->buf[i] == NULL))
1051 lavc_dr_ReleaseFrame(ref, data);
1055 decoder_UnlinkPicture(dec, pic);
1059 for (unsigned i = 0; frame->buf[i] != NULL; i++)
1060 av_buffer_unref(&frame->buf[i]);
1062 decoder_DeletePicture(dec, pic);
1067 * Callback used by libavcodec to get a frame buffer.
1069 * It is used for direct rendering as well as to get the right PTS for each
1070 * decoded picture (even in indirect rendering mode).
1072 static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
1074 decoder_t *dec = ctx->opaque;
1075 decoder_sys_t *sys = dec->p_sys;
1078 for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
1080 frame->data[i] = NULL;
1081 frame->linesize[i] = 0;
1082 frame->buf[i] = NULL;
1085 if (sys->p_va != NULL)
1086 return lavc_va_GetFrame(ctx, frame, flags);
1088 frame->opaque = NULL;
1089 if (!sys->b_direct_rendering)
1090 return avcodec_default_get_buffer2(ctx, frame, flags);
1092 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1093 * so we need to check for direct rendering again. */
1095 pic = lavc_dr_GetFrame(ctx, frame, flags);
1098 if (sys->i_direct_rendering_used != 0)
1100 msg_Warn(dec, "disabling direct rendering");
1101 sys->i_direct_rendering_used = 0;
1104 return avcodec_default_get_buffer2(ctx, frame, flags);
1107 if (sys->i_direct_rendering_used != 1)
1109 msg_Dbg(dec, "enabling direct rendering");
1110 sys->i_direct_rendering_used = 1;
1114 frame->opaque = pic;
1115 static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!");
1116 for (unsigned i = 0; i < PICTURE_PLANE_MAX; i++)
1118 frame->data[i] = pic->p[i].p_pixels;
1119 frame->linesize[i] = pic->p[i].i_pitch;
1124 static int ffmpeg_va_GetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1126 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1127 decoder_sys_t *p_sys = p_dec->p_sys;
1128 vlc_va_t *p_va = p_sys->p_va;
1130 /* hwaccel_context is not present in old ffmpeg version */
1131 if( vlc_va_Setup( p_va,
1132 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
1133 p_context->coded_width, p_context->coded_height ) )
1135 msg_Err( p_dec, "vlc_va_Setup failed" );
1139 if( vlc_va_Get( p_va, &p_ff_pic->opaque, &p_ff_pic->data[0] ) )
1141 msg_Err( p_dec, "vlc_va_Get failed" );
1145 p_ff_pic->data[3] = p_ff_pic->data[0];
1146 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1150 static picture_t *ffmpeg_dr_GetFrameBuf(struct AVCodecContext *p_context)
1152 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1153 decoder_sys_t *p_sys = p_dec->p_sys;
1155 int i_width = p_context->width;
1156 int i_height = p_context->height;
1157 avcodec_align_dimensions( p_context, &i_width, &i_height );
1159 picture_t *p_pic = NULL;
1160 if (GetVlcChroma(&p_dec->fmt_out.video, p_context->pix_fmt) != VLC_SUCCESS)
1163 if (p_context->pix_fmt == PIX_FMT_PAL8)
1166 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1168 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1172 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1173 p_pic->p[0].i_lines < i_height )
1176 for( int i = 0; i < p_pic->i_planes; i++ )
1179 switch( p_sys->i_codec_id )
1181 case AV_CODEC_ID_SVQ1:
1182 case AV_CODEC_ID_VP5:
1183 case AV_CODEC_ID_VP6:
1184 case AV_CODEC_ID_VP6F:
1185 case AV_CODEC_ID_VP6A:
1189 i_align = i == 0 ? 16 : 8;
1192 if( p_pic->p[i].i_pitch % i_align )
1194 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1198 if( p_context->pix_fmt == PIX_FMT_YUV422P )
1200 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1201 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1209 decoder_DeletePicture( p_dec, p_pic );
1214 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
1217 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1218 decoder_sys_t *p_sys = p_dec->p_sys;
1221 p_ff_pic->opaque = NULL;
1222 #if ! LIBAVCODEC_VERSION_CHECK(54, 34, 0, 79, 101)
1223 p_ff_pic->pkt_pts = p_context->pkt ? p_context->pkt->pts : AV_NOPTS_VALUE;
1225 #if LIBAVCODEC_VERSION_MAJOR < 54
1226 p_ff_pic->age = 256*256*256*64;
1230 return ffmpeg_va_GetFrameBuf(p_context, p_ff_pic);
1232 if( !p_sys->b_direct_rendering )
1233 return avcodec_default_get_buffer( p_context, p_ff_pic );
1236 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1237 * so we need to check for direct rendering again. */
1239 picture_t *p_pic = ffmpeg_dr_GetFrameBuf(p_context);
1241 if( p_sys->i_direct_rendering_used != 0 )
1243 msg_Warn( p_dec, "disabling direct rendering" );
1244 p_sys->i_direct_rendering_used = 0;
1248 return avcodec_default_get_buffer( p_context, p_ff_pic );
1251 if( p_sys->i_direct_rendering_used != 1 ) {
1252 msg_Dbg( p_dec, "using direct rendering" );
1253 p_sys->i_direct_rendering_used = 1;
1256 p_context->draw_horiz_band = NULL;
1259 p_ff_pic->opaque = (void*)p_pic;
1260 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1261 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1262 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1263 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1264 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1266 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1267 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1268 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1269 p_ff_pic->linesize[3] = 0;
1274 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1277 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1278 decoder_sys_t *p_sys = p_dec->p_sys;
1281 vlc_va_Release( p_sys->p_va, p_ff_pic->opaque, p_ff_pic->data[0] );
1282 else if( p_ff_pic->opaque )
1283 decoder_UnlinkPicture( p_dec, (picture_t*)p_ff_pic->opaque);
1284 else if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1285 /* We can end up here without the AVFrame being allocated by
1286 * avcodec_default_get_buffer() if VA is used and the frame is
1287 * released when the decoder is closed
1289 avcodec_default_release_buffer( p_context, p_ff_pic );
1291 for( int i = 0; i < 4; i++ )
1292 p_ff_pic->data[i] = NULL;
1296 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1297 const enum PixelFormat *pi_fmt )
1299 decoder_t *p_dec = p_context->opaque;
1300 decoder_sys_t *p_sys = p_dec->p_sys;
1301 vlc_va_t *p_va = p_sys->p_va;
1304 vlc_va_Delete( p_va );
1306 /* Enumerate available formats */
1307 bool can_hwaccel = false;
1308 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1310 const AVPixFmtDescriptor *dsc = av_pix_fmt_desc_get(pi_fmt[i]);
1313 bool hwaccel = (dsc->flags & AV_PIX_FMT_FLAG_HWACCEL) != 0;
1315 msg_Dbg( p_dec, "available %sware decoder output format %d (%s)",
1316 hwaccel ? "hard" : "soft", pi_fmt[i], dsc->name );
1324 /* Profile and level information is needed now.
1325 * TODO: avoid code duplication with avcodec.c */
1326 if( p_context->profile != FF_PROFILE_UNKNOWN)
1327 p_dec->fmt_in.i_profile = p_context->profile;
1328 if( p_context->level != FF_LEVEL_UNKNOWN)
1329 p_dec->fmt_in.i_level = p_context->level;
1331 p_va = vlc_va_New( VLC_OBJECT(p_dec), p_sys->i_codec_id, &p_dec->fmt_in );
1335 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1337 if( p_va->pix_fmt != pi_fmt[i] )
1340 /* We try to call vlc_va_Setup when possible to detect errors when
1341 * possible (later is too late) */
1342 if( p_context->width > 0 && p_context->height > 0
1343 && vlc_va_Setup( p_va, &p_context->hwaccel_context,
1344 &p_dec->fmt_out.video.i_chroma,
1345 p_context->width, p_context->height ) )
1347 msg_Err( p_dec, "acceleration setup failure" );
1351 if( p_va->description )
1352 msg_Info( p_dec, "Using %s for hardware decoding.",
1353 p_va->description );
1355 /* FIXME this will disable direct rendering
1356 * even if a new pixel format is renegotiated
1358 p_sys->b_direct_rendering = false;
1360 p_context->draw_horiz_band = NULL;
1364 vlc_va_Delete( p_va );
1367 /* Fallback to default behaviour */
1369 return avcodec_default_get_format( p_context, pi_fmt );