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;
151 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
153 /* we are doomed, but not really, because most codecs set their pix_fmt
155 * FIXME does it make sense here ? */
156 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
158 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
160 /* If an aspect-ratio was specified in the input format then force it */
161 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
163 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
164 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
168 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
169 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
171 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
173 p_dec->fmt_out.video.i_sar_num = 1;
174 p_dec->fmt_out.video.i_sar_den = 1;
178 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
179 p_dec->fmt_in.video.i_frame_rate_base > 0 )
181 p_dec->fmt_out.video.i_frame_rate =
182 p_dec->fmt_in.video.i_frame_rate;
183 p_dec->fmt_out.video.i_frame_rate_base =
184 p_dec->fmt_in.video.i_frame_rate_base;
186 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
188 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
189 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num * __MAX( p_context->ticks_per_frame, 1 );
192 return decoder_NewPicture( p_dec );
195 /*****************************************************************************
196 * InitVideo: initialize the video decoder
197 *****************************************************************************
198 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
199 * opened (done after the first decoded frame).
200 *****************************************************************************/
201 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
202 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
204 decoder_sys_t *p_sys;
207 /* Allocate the memory needed to store the decoder's structure */
208 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
211 p_codec->type = AVMEDIA_TYPE_VIDEO;
212 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
213 p_context->codec_id = i_codec_id;
214 p_sys->p_context = p_context;
215 p_sys->p_codec = p_codec;
216 p_sys->i_codec_id = i_codec_id;
217 p_sys->psz_namecodec = psz_namecodec;
218 p_sys->p_ff_pic = avcodec_alloc_frame();
219 p_sys->b_delayed_open = true;
221 vlc_sem_init( &p_sys->sem_mt, 0 );
223 /* ***** Fill p_context with init values ***** */
224 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
226 /* ***** Get configuration of ffmpeg plugin ***** */
227 p_sys->p_context->workaround_bugs =
228 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
229 p_sys->p_context->err_recognition =
230 var_InheritInteger( p_dec, "avcodec-error-resilience" );
232 if( var_CreateGetBool( p_dec, "grayscale" ) )
233 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
235 /* ***** Output always the frames ***** */
236 #if LIBAVCODEC_VERSION_CHECK(55, 23, 1, 40, 101)
237 p_sys->p_context->flags |= CODEC_FLAG_OUTPUT_CORRUPT;
240 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
241 if( i_val ) p_sys->p_context->debug_mv = i_val;
243 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
244 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
245 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
246 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
247 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
249 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
250 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
252 /* ***** libavcodec frame skipping ***** */
253 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
255 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-frame" );
256 if( i_val >= 4 ) p_sys->p_context->skip_frame = AVDISCARD_ALL;
257 else if( i_val == 3 ) p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
258 else if( i_val == 2 ) p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
259 else if( i_val == 1 ) p_sys->p_context->skip_frame = AVDISCARD_NONREF;
260 else if( i_val == -1 ) p_sys->p_context->skip_frame = AVDISCARD_NONE;
261 else p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
262 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
264 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-idct" );
265 if( i_val >= 4 ) p_sys->p_context->skip_idct = AVDISCARD_ALL;
266 else if( i_val == 3 ) p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
267 else if( i_val == 2 ) p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
268 else if( i_val == 1 ) p_sys->p_context->skip_idct = AVDISCARD_NONREF;
269 else if( i_val == -1 ) p_sys->p_context->skip_idct = AVDISCARD_NONE;
270 else p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
271 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
273 /* ***** libavcodec direct rendering ***** */
274 p_sys->b_direct_rendering = false;
275 p_sys->i_direct_rendering_used = -1;
276 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
277 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
278 /* No idea why ... but this fixes flickering on some TSCC streams */
279 p_sys->i_codec_id != AV_CODEC_ID_TSCC && p_sys->i_codec_id != AV_CODEC_ID_CSCD &&
280 p_sys->i_codec_id != AV_CODEC_ID_CINEPAK &&
281 !p_sys->p_context->debug_mv )
283 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
284 * so we need to do another check in ffmpeg_GetFrameBuf() */
285 p_sys->b_direct_rendering = true;
288 /* libavcodec doesn't properly release old pictures when frames are skipped */
289 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
290 if( p_sys->b_direct_rendering )
292 msg_Dbg( p_dec, "trying to use direct rendering" );
293 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
297 msg_Dbg( p_dec, "direct rendering is disabled" );
300 p_sys->p_context->get_format = ffmpeg_GetFormat;
301 /* Always use our get_buffer wrapper so we can calculate the
303 #if LIBAVCODEC_VERSION_MAJOR >= 55
304 p_sys->p_context->get_buffer2 = lavc_GetFrame;
306 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
307 p_sys->p_context->reget_buffer = avcodec_default_reget_buffer;
308 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
310 p_sys->p_context->opaque = p_dec;
312 #ifdef HAVE_AVCODEC_MT
313 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
314 if( i_thread_count <= 0 )
316 i_thread_count = vlc_GetCPUCount();
317 if( i_thread_count > 1 )
320 //FIXME: take in count the decoding time
321 i_thread_count = __MIN( i_thread_count, 4 );
323 i_thread_count = __MIN( i_thread_count, 16 );
324 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
325 p_sys->p_context->thread_count = i_thread_count;
326 p_sys->p_context->thread_safe_callbacks = true;
330 case AV_CODEC_ID_MPEG4:
331 case AV_CODEC_ID_H263:
332 p_sys->p_context->thread_type = 0;
334 case AV_CODEC_ID_MPEG1VIDEO:
335 case AV_CODEC_ID_MPEG2VIDEO:
336 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
338 # if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 1, 0))
339 case AV_CODEC_ID_H264:
340 case AV_CODEC_ID_VC1:
341 case AV_CODEC_ID_WMV3:
342 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
346 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
347 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
350 /* ***** misc init ***** */
351 p_sys->i_pts = VLC_TS_INVALID;
352 p_sys->b_has_b_frames = false;
353 p_sys->b_first_frame = true;
354 p_sys->b_flush = false;
355 p_sys->i_late_frames = 0;
357 /* Set output properties */
358 p_dec->fmt_out.i_cat = VIDEO_ES;
359 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
361 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
362 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
364 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
366 #if LIBAVCODEC_VERSION_MAJOR < 54
368 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
369 if( p_dec->fmt_in.video.p_palette )
371 p_sys->palette.palette_changed = 1;
373 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
379 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
380 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
381 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
382 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
384 p_sys->palette.palette[i] = c.u;
386 p_sys->p_context->palctrl = &p_sys->palette;
388 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
389 if( p_dec->fmt_out.video.p_palette )
390 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
392 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
394 p_sys->p_context->palctrl = &p_sys->palette;
397 if( p_dec->fmt_in.video.p_palette ) {
398 p_sys->palette_sent = false;
399 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
400 if( p_dec->fmt_out.video.p_palette )
401 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
403 p_sys->palette_sent = true;
406 /* ***** init this codec with special data ***** */
407 ffmpeg_InitCodec( p_dec );
409 /* ***** Open the codec ***** */
410 if( ffmpeg_OpenCodec( p_dec ) < 0 )
412 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
413 av_free( p_sys->p_ff_pic );
414 vlc_sem_destroy( &p_sys->sem_mt );
422 /*****************************************************************************
423 * DecodeVideo: Called to decode one or more frames
424 *****************************************************************************/
425 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
427 decoder_sys_t *p_sys = p_dec->p_sys;
428 AVCodecContext *p_context = p_sys->p_context;
430 int b_null_size = false;
436 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
438 ffmpeg_InitCodec( p_dec );
439 if( p_sys->b_delayed_open )
441 if( ffmpeg_OpenCodec( p_dec ) )
442 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
447 if(!p_block && !(p_sys->p_codec->capabilities & CODEC_CAP_DELAY) )
450 if( p_sys->b_delayed_open )
453 block_Release( p_block );
459 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
461 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
463 p_sys->i_late_frames = 0;
466 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
467 avcodec_flush_buffers( p_context );
470 block_Release( p_block );
474 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
476 /* Do not care about late frames when prerolling
477 * TODO avoid decoding of non reference frame
478 * (ie all B except for H264 where it depends only on nal_ref_idc) */
479 p_sys->i_late_frames = 0;
483 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
484 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
486 if( p_sys->i_pts > VLC_TS_INVALID )
488 msg_Err( p_dec, "more than 5 seconds of late video -> "
489 "dropping frame (computer too slow ?)" );
490 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
493 block_Release( p_block );
494 p_sys->i_late_frames--;
498 /* A good idea could be to decode all I pictures and see for the other */
499 if( !p_dec->b_pace_control &&
501 (p_sys->i_late_frames > 4) )
504 if( p_sys->i_late_frames < 12 )
506 p_context->skip_frame =
507 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
508 AVDISCARD_NONREF : p_sys->i_skip_frame;
512 /* picture too late, won't decode
513 * but break picture until a new I, and for mpeg4 ...*/
514 p_sys->i_late_frames--; /* needed else it will never be decrease */
516 block_Release( p_block );
522 if( p_sys->b_hurry_up )
523 p_context->skip_frame = p_sys->i_skip_frame;
524 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
530 if( p_context->width <= 0 || p_context->height <= 0 )
532 if( p_sys->b_hurry_up )
533 p_context->skip_frame = p_sys->i_skip_frame;
536 else if( !b_drawpicture )
538 /* It creates broken picture
539 * FIXME either our parser or ffmpeg is broken */
541 if( p_sys->b_hurry_up )
542 p_context->skip_frame = __MAX( p_context->skip_frame,
548 * Do the actual decoding now */
550 /* Don't forget that libavcodec requires a little more bytes
551 * that the real frame size */
552 if( p_block && p_block->i_buffer > 0 )
554 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
556 p_block = block_Realloc( p_block, 0,
557 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
560 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
562 memset( p_block->p_buffer + p_block->i_buffer, 0,
563 FF_INPUT_BUFFER_PADDING_SIZE );
566 while( !p_block || p_block->i_buffer > 0 || p_sys->b_flush )
568 int i_used, b_gotpicture;
574 av_init_packet( &pkt );
577 pkt.data = p_block->p_buffer;
578 pkt.size = p_block->i_buffer;
579 pkt.pts = p_block->i_pts;
580 pkt.dts = p_block->i_dts;
584 /* Return delayed frames if codec has CODEC_CAP_DELAY */
589 #if LIBAVCODEC_VERSION_MAJOR >= 54
590 if( !p_sys->palette_sent )
592 uint8_t *pal = av_packet_new_side_data(&pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
594 memcpy(pal, p_dec->fmt_in.video.p_palette->palette, AVPALETTE_SIZE);
595 p_sys->palette_sent = true;
600 /* Make sure we don't reuse the same timestamps twice */
604 p_block->i_dts = VLC_TS_INVALID;
607 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
608 &b_gotpicture, &pkt );
610 if( b_null_size && !p_sys->b_flush &&
611 p_context->width > 0 && p_context->height > 0 )
613 /* Reparse it to not drop the I frame */
615 if( p_sys->b_hurry_up )
616 p_context->skip_frame = p_sys->i_skip_frame;
617 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
618 &b_gotpicture, &pkt );
623 p_sys->b_first_frame = true;
627 if( p_block->i_buffer <= 0 )
628 p_sys->b_flush = false;
633 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
635 block_Release( p_block );
638 else if( (unsigned)i_used > p_block->i_buffer ||
639 p_context->thread_count > 1 )
641 i_used = p_block->i_buffer;
645 p_block->i_buffer -= i_used;
646 p_block->p_buffer += i_used;
649 /* Nothing to display */
652 if( i_used == 0 ) break;
656 /* Sanity check (seems to be needed for some streams) */
657 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
659 p_sys->b_has_b_frames = true;
662 /* Compute the PTS */
664 p_sys->p_ff_pic->pkt_pts;
665 if (i_pts <= VLC_TS_INVALID)
666 i_pts = p_sys->p_ff_pic->pkt_dts;
668 if( i_pts <= VLC_TS_INVALID )
669 i_pts = p_sys->i_pts;
671 /* Interpolate the next PTS */
672 if( i_pts > VLC_TS_INVALID )
673 p_sys->i_pts = i_pts;
674 if( p_sys->i_pts > VLC_TS_INVALID )
676 /* interpolate the next PTS */
677 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
678 p_dec->fmt_in.video.i_frame_rate_base > 0 )
680 p_sys->i_pts += INT64_C(1000000) *
681 (2 + p_sys->p_ff_pic->repeat_pict) *
682 p_dec->fmt_in.video.i_frame_rate_base /
683 (2 * p_dec->fmt_in.video.i_frame_rate);
685 else if( p_context->time_base.den > 0 )
687 int i_tick = p_context->ticks_per_frame;
691 p_sys->i_pts += INT64_C(1000000) *
692 (2 + p_sys->p_ff_pic->repeat_pict) *
693 i_tick * p_context->time_base.num /
694 (2 * p_context->time_base.den);
698 /* Update frame late count (except when doing preroll) */
699 mtime_t i_display_date = 0;
700 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
701 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
703 if( i_display_date > 0 && i_display_date <= mdate() )
705 p_sys->i_late_frames++;
706 if( p_sys->i_late_frames == 1 )
707 p_sys->i_late_frames_start = mdate();
711 p_sys->i_late_frames = 0;
714 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
717 if( p_sys->p_va != NULL || p_sys->p_ff_pic->opaque == NULL )
719 /* Get a new picture */
720 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
724 block_Release( p_block );
728 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
730 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
734 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
735 decoder_LinkPicture( p_dec, p_pic );
738 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
740 /* Fetch again the aspect ratio in case it changed */
741 p_dec->fmt_out.video.i_sar_num
742 = p_context->sample_aspect_ratio.num;
743 p_dec->fmt_out.video.i_sar_den
744 = p_context->sample_aspect_ratio.den;
746 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
748 p_dec->fmt_out.video.i_sar_num = 1;
749 p_dec->fmt_out.video.i_sar_den = 1;
753 /* Send decoded frame to vout */
754 if( i_pts > VLC_TS_INVALID)
758 if( p_sys->b_first_frame )
760 /* Hack to force display of still pictures */
761 p_sys->b_first_frame = false;
762 p_pic->b_force = true;
765 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
766 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
767 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
773 decoder_DeletePicture( p_dec, p_pic );
778 block_Release( p_block );
782 /*****************************************************************************
783 * EndVideo: decoder destruction
784 *****************************************************************************
785 * This function is called when the thread ends after a successful
787 *****************************************************************************/
788 void EndVideoDec( decoder_t *p_dec )
790 decoder_sys_t *p_sys = p_dec->p_sys;
794 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
795 if( p_sys->p_context->codec )
796 avcodec_flush_buffers( p_sys->p_context );
800 if( p_sys->p_ff_pic )
801 av_free( p_sys->p_ff_pic );
804 vlc_va_Delete( p_sys->p_va );
806 vlc_sem_destroy( &p_sys->sem_mt );
809 /*****************************************************************************
810 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
811 *****************************************************************************/
812 static void ffmpeg_InitCodec( decoder_t *p_dec )
814 decoder_sys_t *p_sys = p_dec->p_sys;
815 int i_size = p_dec->fmt_in.i_extra;
817 if( !i_size ) return;
819 if( p_sys->i_codec_id == AV_CODEC_ID_SVQ3 )
823 p_sys->p_context->extradata_size = i_size + 12;
824 p = p_sys->p_context->extradata =
825 av_malloc( p_sys->p_context->extradata_size +
826 FF_INPUT_BUFFER_PADDING_SIZE );
830 memcpy( &p[0], "SVQ3", 4 );
831 memset( &p[4], 0, 8 );
832 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
834 /* Now remove all atoms before the SMI one */
835 if( p_sys->p_context->extradata_size > 0x5a &&
836 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
838 uint8_t *psz = &p[0x52];
840 while( psz < &p[p_sys->p_context->extradata_size - 8] )
842 int i_size = GetDWBE( psz );
845 /* FIXME handle 1 as long size */
848 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
850 memmove( &p[0x52], psz,
851 &p[p_sys->p_context->extradata_size] - psz );
861 p_sys->p_context->extradata_size = i_size;
862 p_sys->p_context->extradata =
863 av_malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
864 if( p_sys->p_context->extradata )
866 memcpy( p_sys->p_context->extradata,
867 p_dec->fmt_in.p_extra, i_size );
868 memset( p_sys->p_context->extradata + i_size,
869 0, FF_INPUT_BUFFER_PADDING_SIZE );
874 /*****************************************************************************
875 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
876 * picture_t structure (when not in direct rendering mode).
877 *****************************************************************************/
878 static void ffmpeg_CopyPicture( decoder_t *p_dec,
879 picture_t *p_pic, AVFrame *p_ff_pic )
881 decoder_sys_t *p_sys = p_dec->p_sys;
885 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic->opaque,
888 else if( FindVlcChroma( p_sys->p_context->pix_fmt ) )
890 int i_plane, i_size, i_line;
891 uint8_t *p_dst, *p_src;
892 int i_src_stride, i_dst_stride;
894 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
896 p_src = p_ff_pic->data[i_plane];
897 p_dst = p_pic->p[i_plane].p_pixels;
898 i_src_stride = p_ff_pic->linesize[i_plane];
899 i_dst_stride = p_pic->p[i_plane].i_pitch;
901 i_size = __MIN( i_src_stride, i_dst_stride );
902 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
905 memcpy( p_dst, p_src, i_size );
906 p_src += i_src_stride;
907 p_dst += i_dst_stride;
913 const char *name = av_get_pix_fmt_name( p_sys->p_context->pix_fmt );
914 msg_Err( p_dec, "Unsupported decoded output format %d (%s)",
915 p_sys->p_context->pix_fmt, name ? name : "unknown" );
920 #if LIBAVCODEC_VERSION_MAJOR >= 55
921 static int lavc_va_GetFrame(struct AVCodecContext *ctx, AVFrame *frame,
924 decoder_t *dec = ctx->opaque;
925 decoder_sys_t *sys = dec->p_sys;
926 vlc_va_t *va = sys->p_va;
928 if (vlc_va_Setup(va, &ctx->hwaccel_context, &dec->fmt_out.video.i_chroma,
929 ctx->coded_width, ctx->coded_height))
931 msg_Err(dec, "hardware acceleration setup failed");
934 if (vlc_va_Get(va, &frame->opaque, &frame->data[0]))
936 msg_Err(dec, "hardware acceleration picture allocation failed");
939 /* data[0] must be non-NULL for libavcodec internal checks.
940 * data[3] actually contains the format-specific surface handle. */
941 frame->data[3] = frame->data[0];
943 frame->buf[0] = av_buffer_create(frame->data[0], 0, va->release,
945 if (unlikely(frame->buf[0] == NULL))
947 vlc_va_Release(va, frame->opaque, frame->data[0]);
950 assert(frame->data[0] != NULL);
961 static void lavc_dr_ReleaseFrame(void *opaque, uint8_t *data)
963 lavc_pic_ref_t *ref = opaque;
965 decoder_UnlinkPicture(ref->decoder, ref->picture);
970 static picture_t *lavc_dr_GetFrame(struct AVCodecContext *ctx,
971 AVFrame *frame, int flags)
973 decoder_t *dec = (decoder_t *)ctx->opaque;
974 decoder_sys_t *sys = dec->p_sys;
976 if (GetVlcChroma(&dec->fmt_out.video, ctx->pix_fmt) != VLC_SUCCESS)
978 dec->fmt_out.i_codec = dec->fmt_out.video.i_chroma;
979 if (ctx->pix_fmt == PIX_FMT_PAL8)
982 int width = frame->width;
983 int height = frame->height;
984 int aligns[AV_NUM_DATA_POINTERS];
986 avcodec_align_dimensions2(ctx, &width, &height, aligns);
988 picture_t *pic = ffmpeg_NewPictBuf(dec, ctx);
992 /* Check that the picture is suitable for libavcodec */
993 if (pic->p[0].i_pitch < width * pic->p[0].i_pixel_pitch)
995 if (sys->i_direct_rendering_used != 0)
996 msg_Dbg(dec, "plane 0: pitch too small (%d/%d*%d)",
997 pic->p[0].i_pitch, width, pic->p[0].i_pixel_pitch);
1001 if (pic->p[0].i_lines < height)
1003 if (sys->i_direct_rendering_used != 0)
1004 msg_Dbg(dec, "plane 0: lines too few (%d/%d)",
1005 pic->p[0].i_lines, height);
1009 for (int i = 0; i < pic->i_planes; i++)
1011 if (pic->p[i].i_pitch % aligns[i])
1013 if (sys->i_direct_rendering_used != 0)
1014 msg_Dbg(dec, "plane %d: pitch not aligned (%d%%%d)",
1015 i, pic->p[i].i_pitch, aligns[i]);
1018 if (((uintptr_t)pic->p[i].p_pixels) % aligns[i])
1020 if (sys->i_direct_rendering_used != 0)
1021 msg_Warn(dec, "plane %d not aligned", i);
1026 /* Allocate buffer references */
1027 for (int i = 0; i < pic->i_planes; i++)
1029 lavc_pic_ref_t *ref = malloc(sizeof (*ref));
1034 decoder_LinkPicture(dec, pic);
1036 uint8_t *data = pic->p[i].p_pixels;
1037 int size = pic->p[i].i_pitch * pic->p[i].i_lines;
1039 frame->buf[i] = av_buffer_create(data, size, lavc_dr_ReleaseFrame,
1041 if (unlikely(frame->buf[i] == NULL))
1043 lavc_dr_ReleaseFrame(ref, data);
1047 decoder_UnlinkPicture(dec, pic);
1051 for (unsigned i = 0; frame->buf[i] != NULL; i++)
1052 av_buffer_unref(&frame->buf[i]);
1054 decoder_DeletePicture(dec, pic);
1059 * Callback used by libavcodec to get a frame buffer.
1061 * It is used for direct rendering as well as to get the right PTS for each
1062 * decoded picture (even in indirect rendering mode).
1064 static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
1066 decoder_t *dec = ctx->opaque;
1067 decoder_sys_t *sys = dec->p_sys;
1070 for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
1072 frame->data[i] = NULL;
1073 frame->linesize[i] = 0;
1074 frame->buf[i] = NULL;
1077 if (sys->p_va != NULL)
1078 return lavc_va_GetFrame(ctx, frame, flags);
1080 frame->opaque = NULL;
1081 if (!sys->b_direct_rendering)
1082 return avcodec_default_get_buffer2(ctx, frame, flags);
1084 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1085 * so we need to check for direct rendering again. */
1087 pic = lavc_dr_GetFrame(ctx, frame, flags);
1090 if (sys->i_direct_rendering_used != 0)
1092 msg_Warn(dec, "disabling direct rendering");
1093 sys->i_direct_rendering_used = 0;
1096 return avcodec_default_get_buffer2(ctx, frame, flags);
1099 if (sys->i_direct_rendering_used != 1)
1101 msg_Dbg(dec, "enabling direct rendering");
1102 sys->i_direct_rendering_used = 1;
1106 frame->opaque = pic;
1107 static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!");
1108 for (unsigned i = 0; i < PICTURE_PLANE_MAX; i++)
1110 frame->data[i] = pic->p[i].p_pixels;
1111 frame->linesize[i] = pic->p[i].i_pitch;
1116 static int ffmpeg_va_GetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1118 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1119 decoder_sys_t *p_sys = p_dec->p_sys;
1120 vlc_va_t *p_va = p_sys->p_va;
1122 /* hwaccel_context is not present in old ffmpeg version */
1123 if( vlc_va_Setup( p_va,
1124 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
1125 p_context->coded_width, p_context->coded_height ) )
1127 msg_Err( p_dec, "vlc_va_Setup failed" );
1131 if( vlc_va_Get( p_va, &p_ff_pic->opaque, &p_ff_pic->data[0] ) )
1133 msg_Err( p_dec, "vlc_va_Get failed" );
1137 p_ff_pic->data[3] = p_ff_pic->data[0];
1138 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1142 static picture_t *ffmpeg_dr_GetFrameBuf(struct AVCodecContext *p_context)
1144 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1145 decoder_sys_t *p_sys = p_dec->p_sys;
1147 int i_width = p_context->width;
1148 int i_height = p_context->height;
1149 avcodec_align_dimensions( p_context, &i_width, &i_height );
1151 picture_t *p_pic = NULL;
1152 if (GetVlcChroma(&p_dec->fmt_out.video, p_context->pix_fmt) != VLC_SUCCESS)
1155 if (p_context->pix_fmt == PIX_FMT_PAL8)
1158 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1160 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1164 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1165 p_pic->p[0].i_lines < i_height )
1168 for( int i = 0; i < p_pic->i_planes; i++ )
1171 switch( p_sys->i_codec_id )
1173 case AV_CODEC_ID_SVQ1:
1174 case AV_CODEC_ID_VP5:
1175 case AV_CODEC_ID_VP6:
1176 case AV_CODEC_ID_VP6F:
1177 case AV_CODEC_ID_VP6A:
1181 i_align = i == 0 ? 16 : 8;
1184 if( p_pic->p[i].i_pitch % i_align )
1186 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1190 if( p_context->pix_fmt == PIX_FMT_YUV422P )
1192 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1193 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1201 decoder_DeletePicture( p_dec, p_pic );
1206 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
1209 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1210 decoder_sys_t *p_sys = p_dec->p_sys;
1213 p_ff_pic->opaque = NULL;
1214 #if ! LIBAVCODEC_VERSION_CHECK(54, 34, 0, 79, 101)
1215 p_ff_pic->pkt_pts = p_context->pkt ? p_context->pkt->pts : AV_NOPTS_VALUE;
1217 #if LIBAVCODEC_VERSION_MAJOR < 54
1218 p_ff_pic->age = 256*256*256*64;
1222 return ffmpeg_va_GetFrameBuf(p_context, p_ff_pic);
1224 if( !p_sys->b_direct_rendering )
1225 return avcodec_default_get_buffer( p_context, p_ff_pic );
1228 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1229 * so we need to check for direct rendering again. */
1231 picture_t *p_pic = ffmpeg_dr_GetFrameBuf(p_context);
1233 if( p_sys->i_direct_rendering_used != 0 )
1235 msg_Warn( p_dec, "disabling direct rendering" );
1236 p_sys->i_direct_rendering_used = 0;
1240 return avcodec_default_get_buffer( p_context, p_ff_pic );
1243 if( p_sys->i_direct_rendering_used != 1 ) {
1244 msg_Dbg( p_dec, "using direct rendering" );
1245 p_sys->i_direct_rendering_used = 1;
1248 p_context->draw_horiz_band = NULL;
1251 p_ff_pic->opaque = (void*)p_pic;
1252 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1253 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1254 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1255 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1256 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1258 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1259 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1260 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1261 p_ff_pic->linesize[3] = 0;
1266 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1269 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1270 decoder_sys_t *p_sys = p_dec->p_sys;
1273 vlc_va_Release( p_sys->p_va, p_ff_pic->opaque, p_ff_pic->data[0] );
1274 else if( p_ff_pic->opaque )
1275 decoder_UnlinkPicture( p_dec, (picture_t*)p_ff_pic->opaque);
1276 else if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1277 /* We can end up here without the AVFrame being allocated by
1278 * avcodec_default_get_buffer() if VA is used and the frame is
1279 * released when the decoder is closed
1281 avcodec_default_release_buffer( p_context, p_ff_pic );
1283 for( int i = 0; i < 4; i++ )
1284 p_ff_pic->data[i] = NULL;
1288 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1289 const enum PixelFormat *pi_fmt )
1291 decoder_t *p_dec = p_context->opaque;
1292 decoder_sys_t *p_sys = p_dec->p_sys;
1293 vlc_va_t *p_va = p_sys->p_va;
1296 vlc_va_Delete( p_va );
1298 /* Enumerate available formats */
1299 bool can_hwaccel = false;
1300 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1302 const AVPixFmtDescriptor *dsc = av_pix_fmt_desc_get(pi_fmt[i]);
1305 bool hwaccel = (dsc->flags & AV_PIX_FMT_FLAG_HWACCEL) != 0;
1307 msg_Dbg( p_dec, "available %sware decoder output format %d (%s)",
1308 hwaccel ? "hard" : "soft", pi_fmt[i], dsc->name );
1316 /* Profile and level information is needed now.
1317 * TODO: avoid code duplication with avcodec.c */
1318 if( p_context->profile != FF_PROFILE_UNKNOWN)
1319 p_dec->fmt_in.i_profile = p_context->profile;
1320 if( p_context->level != FF_LEVEL_UNKNOWN)
1321 p_dec->fmt_in.i_level = p_context->level;
1323 p_va = vlc_va_New( VLC_OBJECT(p_dec), p_sys->i_codec_id, &p_dec->fmt_in );
1327 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1329 if( p_va->pix_fmt != pi_fmt[i] )
1332 /* We try to call vlc_va_Setup when possible to detect errors when
1333 * possible (later is too late) */
1334 if( p_context->width > 0 && p_context->height > 0
1335 && vlc_va_Setup( p_va, &p_context->hwaccel_context,
1336 &p_dec->fmt_out.video.i_chroma,
1337 p_context->width, p_context->height ) )
1339 msg_Err( p_dec, "acceleration setup failure" );
1343 if( p_va->description )
1344 msg_Info( p_dec, "Using %s for hardware decoding.",
1345 p_va->description );
1347 /* FIXME this will disable direct rendering
1348 * even if a new pixel format is renegotiated
1350 p_sys->b_direct_rendering = false;
1352 p_context->draw_horiz_band = NULL;
1356 vlc_va_Delete( p_va );
1359 /* Fallback to default behaviour */
1361 return avcodec_default_get_format( p_context, pi_fmt );