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 */
88 #ifdef HAVE_AVCODEC_MT
89 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
90 # define post_mt(s) vlc_sem_post( &s->sem_mt )
96 /*****************************************************************************
98 *****************************************************************************/
99 static void ffmpeg_InitCodec ( decoder_t * );
100 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
101 #if LIBAVCODEC_VERSION_MAJOR >= 55
102 static int lavc_GetFrame(struct AVCodecContext *, AVFrame *, int);
104 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
105 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
107 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
108 const enum PixelFormat * );
110 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
112 uint8_t *p = (uint8_t*)&fcc;
113 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
116 /*****************************************************************************
118 *****************************************************************************/
120 /* Returns a new picture buffer */
121 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
122 AVCodecContext *p_context )
124 decoder_sys_t *p_sys = p_dec->p_sys;
125 int width = p_context->coded_width;
126 int height = p_context->coded_height;
128 if( p_sys->p_va == NULL )
130 int aligns[AV_NUM_DATA_POINTERS];
132 avcodec_align_dimensions2(p_context, &width, &height, aligns);
136 if( width == 0 || height == 0 || width > 8192 || height > 8192 )
138 msg_Err( p_dec, "Invalid frame size %dx%d.", width, height );
139 return NULL; /* invalid display size */
141 p_dec->fmt_out.video.i_width = width;
142 p_dec->fmt_out.video.i_height = height;
144 if( width != p_context->width || height != p_context->height )
146 p_dec->fmt_out.video.i_visible_width = p_context->width;
147 p_dec->fmt_out.video.i_visible_height = p_context->height;
151 p_dec->fmt_out.video.i_visible_width = width;
152 p_dec->fmt_out.video.i_visible_height = height;
155 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
157 /* we are doomed, but not really, because most codecs set their pix_fmt
159 * FIXME does it make sense here ? */
160 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
162 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
164 /* If an aspect-ratio was specified in the input format then force it */
165 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
167 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
168 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
172 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
173 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
175 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
177 p_dec->fmt_out.video.i_sar_num = 1;
178 p_dec->fmt_out.video.i_sar_den = 1;
182 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
183 p_dec->fmt_in.video.i_frame_rate_base > 0 )
185 p_dec->fmt_out.video.i_frame_rate =
186 p_dec->fmt_in.video.i_frame_rate;
187 p_dec->fmt_out.video.i_frame_rate_base =
188 p_dec->fmt_in.video.i_frame_rate_base;
190 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
192 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
193 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num * __MAX( p_context->ticks_per_frame, 1 );
196 return decoder_NewPicture( p_dec );
199 /*****************************************************************************
200 * InitVideo: initialize the video decoder
201 *****************************************************************************
202 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
203 * opened (done after the first decoded frame).
204 *****************************************************************************/
205 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
206 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
208 decoder_sys_t *p_sys;
211 /* Allocate the memory needed to store the decoder's structure */
212 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
215 p_codec->type = AVMEDIA_TYPE_VIDEO;
216 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
217 p_context->codec_id = i_codec_id;
218 p_sys->p_context = p_context;
219 p_sys->p_codec = p_codec;
220 p_sys->i_codec_id = i_codec_id;
221 p_sys->psz_namecodec = psz_namecodec;
222 p_sys->p_ff_pic = avcodec_alloc_frame();
223 p_sys->b_delayed_open = true;
225 vlc_sem_init( &p_sys->sem_mt, 0 );
227 /* ***** Fill p_context with init values ***** */
228 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
230 /* ***** Get configuration of ffmpeg plugin ***** */
231 p_sys->p_context->workaround_bugs =
232 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
233 p_sys->p_context->err_recognition =
234 var_InheritInteger( p_dec, "avcodec-error-resilience" );
236 if( var_CreateGetBool( p_dec, "grayscale" ) )
237 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
239 /* ***** Output always the frames ***** */
240 #if LIBAVCODEC_VERSION_CHECK(55, 23, 1, 40, 101)
241 p_sys->p_context->flags |= CODEC_FLAG_OUTPUT_CORRUPT;
244 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
245 if( i_val ) p_sys->p_context->debug_mv = i_val;
247 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
248 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
249 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
250 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
251 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
253 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
254 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
256 /* ***** libavcodec frame skipping ***** */
257 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
259 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-frame" );
260 if( i_val >= 4 ) p_sys->p_context->skip_frame = AVDISCARD_ALL;
261 else if( i_val == 3 ) p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
262 else if( i_val == 2 ) p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
263 else if( i_val == 1 ) p_sys->p_context->skip_frame = AVDISCARD_NONREF;
264 else if( i_val == -1 ) p_sys->p_context->skip_frame = AVDISCARD_NONE;
265 else p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
266 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
268 i_val = var_CreateGetInteger( p_dec, "avcodec-skip-idct" );
269 if( i_val >= 4 ) p_sys->p_context->skip_idct = AVDISCARD_ALL;
270 else if( i_val == 3 ) p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
271 else if( i_val == 2 ) p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
272 else if( i_val == 1 ) p_sys->p_context->skip_idct = AVDISCARD_NONREF;
273 else if( i_val == -1 ) p_sys->p_context->skip_idct = AVDISCARD_NONE;
274 else p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
275 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
277 /* ***** libavcodec direct rendering ***** */
278 p_sys->b_direct_rendering = false;
279 p_sys->i_direct_rendering_used = -1;
280 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
281 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
282 /* No idea why ... but this fixes flickering on some TSCC streams */
283 p_sys->i_codec_id != AV_CODEC_ID_TSCC && p_sys->i_codec_id != AV_CODEC_ID_CSCD &&
284 p_sys->i_codec_id != AV_CODEC_ID_CINEPAK &&
285 !p_sys->p_context->debug_mv )
287 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
288 * so we need to do another check in ffmpeg_GetFrameBuf() */
289 p_sys->b_direct_rendering = true;
292 /* libavcodec doesn't properly release old pictures when frames are skipped */
293 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
294 if( p_sys->b_direct_rendering )
296 msg_Dbg( p_dec, "trying to use direct rendering" );
297 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
301 msg_Dbg( p_dec, "direct rendering is disabled" );
304 p_sys->p_context->get_format = ffmpeg_GetFormat;
305 /* Always use our get_buffer wrapper so we can calculate the
307 #if LIBAVCODEC_VERSION_MAJOR >= 55
308 p_sys->p_context->get_buffer2 = lavc_GetFrame;
310 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
311 p_sys->p_context->reget_buffer = avcodec_default_reget_buffer;
312 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
314 p_sys->p_context->opaque = p_dec;
316 #ifdef HAVE_AVCODEC_MT
317 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
318 if( i_thread_count <= 0 )
320 i_thread_count = vlc_GetCPUCount();
321 if( i_thread_count > 1 )
324 //FIXME: take in count the decoding time
325 i_thread_count = __MIN( i_thread_count, 4 );
327 i_thread_count = __MIN( i_thread_count, 16 );
328 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
329 p_sys->p_context->thread_count = i_thread_count;
330 p_sys->p_context->thread_safe_callbacks = true;
334 case AV_CODEC_ID_MPEG4:
335 case AV_CODEC_ID_H263:
336 p_sys->p_context->thread_type = 0;
338 case AV_CODEC_ID_MPEG1VIDEO:
339 case AV_CODEC_ID_MPEG2VIDEO:
340 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
342 # if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 1, 0))
343 case AV_CODEC_ID_H264:
344 case AV_CODEC_ID_VC1:
345 case AV_CODEC_ID_WMV3:
346 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
350 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
351 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
354 /* ***** misc init ***** */
355 p_sys->i_pts = VLC_TS_INVALID;
356 p_sys->b_has_b_frames = false;
357 p_sys->b_first_frame = true;
358 p_sys->b_flush = false;
359 p_sys->i_late_frames = 0;
361 /* Set output properties */
362 p_dec->fmt_out.i_cat = VIDEO_ES;
363 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
365 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
366 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
368 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
370 p_dec->fmt_out.video.orientation = p_dec->fmt_in.video.orientation;
372 if( p_dec->fmt_in.video.p_palette ) {
373 p_sys->palette_sent = false;
374 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
375 if( p_dec->fmt_out.video.p_palette )
376 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
378 p_sys->palette_sent = true;
380 /* ***** init this codec with special data ***** */
381 ffmpeg_InitCodec( p_dec );
383 /* ***** Open the codec ***** */
384 if( ffmpeg_OpenCodec( p_dec ) < 0 )
386 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
387 av_free( p_sys->p_ff_pic );
388 vlc_sem_destroy( &p_sys->sem_mt );
396 /*****************************************************************************
397 * DecodeVideo: Called to decode one or more frames
398 *****************************************************************************/
399 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
401 decoder_sys_t *p_sys = p_dec->p_sys;
402 AVCodecContext *p_context = p_sys->p_context;
409 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
411 ffmpeg_InitCodec( p_dec );
412 if( p_sys->b_delayed_open )
414 if( ffmpeg_OpenCodec( p_dec ) )
415 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
420 if(!p_block && !(p_sys->p_codec->capabilities & CODEC_CAP_DELAY) )
423 if( p_sys->b_delayed_open )
426 block_Release( p_block );
432 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
434 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
436 p_sys->i_late_frames = 0;
439 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
440 avcodec_flush_buffers( p_context );
443 block_Release( p_block );
447 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
449 /* Do not care about late frames when prerolling
450 * TODO avoid decoding of non reference frame
451 * (ie all B except for H264 where it depends only on nal_ref_idc) */
452 p_sys->i_late_frames = 0;
456 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
457 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
459 if( p_sys->i_pts > VLC_TS_INVALID )
461 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
464 block_Release( p_block );
465 p_sys->i_late_frames--;
466 msg_Err( p_dec, "more than 5 seconds of late video -> "
467 "dropping frame (computer too slow ?)" );
471 /* A good idea could be to decode all I pictures and see for the other */
472 if( !p_dec->b_pace_control &&
474 (p_sys->i_late_frames > 4) )
477 if( p_sys->i_late_frames < 12 )
479 p_context->skip_frame =
480 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
481 AVDISCARD_NONREF : p_sys->i_skip_frame;
485 /* picture too late, won't decode
486 * but break picture until a new I, and for mpeg4 ...*/
487 p_sys->i_late_frames--; /* needed else it will never be decrease */
489 block_Release( p_block );
490 msg_Warn( p_dec, "More than 4 late frames, dropping frame" );
496 if( p_sys->b_hurry_up )
497 p_context->skip_frame = p_sys->i_skip_frame;
498 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
504 if( p_context->width <= 0 || p_context->height <= 0 )
506 if( p_sys->b_hurry_up )
507 p_context->skip_frame = p_sys->i_skip_frame;
509 else if( !b_drawpicture )
511 /* It creates broken picture
512 * FIXME either our parser or ffmpeg is broken */
514 if( p_sys->b_hurry_up )
515 p_context->skip_frame = __MAX( p_context->skip_frame,
521 * Do the actual decoding now */
523 /* Don't forget that libavcodec requires a little more bytes
524 * that the real frame size */
525 if( p_block && p_block->i_buffer > 0 )
527 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
529 p_block = block_Realloc( p_block, 0,
530 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
533 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
535 memset( p_block->p_buffer + p_block->i_buffer, 0,
536 FF_INPUT_BUFFER_PADDING_SIZE );
539 while( !p_block || p_block->i_buffer > 0 || p_sys->b_flush )
541 int i_used, b_gotpicture;
547 av_init_packet( &pkt );
550 pkt.data = p_block->p_buffer;
551 pkt.size = p_block->i_buffer;
552 pkt.pts = p_block->i_pts;
553 pkt.dts = p_block->i_dts;
557 /* Return delayed frames if codec has CODEC_CAP_DELAY */
562 if( !p_sys->palette_sent )
564 uint8_t *pal = av_packet_new_side_data(&pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
566 memcpy(pal, p_dec->fmt_in.video.p_palette->palette, AVPALETTE_SIZE);
567 p_sys->palette_sent = true;
571 /* Make sure we don't reuse the same timestamps twice */
575 p_block->i_dts = VLC_TS_INVALID;
578 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
579 &b_gotpicture, &pkt );
584 p_sys->b_first_frame = true;
588 if( p_block->i_buffer <= 0 )
589 p_sys->b_flush = false;
594 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
596 block_Release( p_block );
599 else if( (unsigned)i_used > p_block->i_buffer ||
600 p_context->thread_count > 1 )
602 i_used = p_block->i_buffer;
606 p_block->i_buffer -= i_used;
607 p_block->p_buffer += i_used;
610 /* Nothing to display */
613 if( i_used == 0 ) break;
617 /* Sanity check (seems to be needed for some streams) */
618 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
620 p_sys->b_has_b_frames = true;
623 /* Compute the PTS */
625 p_sys->p_ff_pic->pkt_pts;
626 if (i_pts <= VLC_TS_INVALID)
627 i_pts = p_sys->p_ff_pic->pkt_dts;
629 if( i_pts <= VLC_TS_INVALID )
630 i_pts = p_sys->i_pts;
632 /* Interpolate the next PTS */
633 if( i_pts > VLC_TS_INVALID )
634 p_sys->i_pts = i_pts;
635 if( p_sys->i_pts > VLC_TS_INVALID )
637 /* interpolate the next PTS */
638 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
639 p_dec->fmt_in.video.i_frame_rate_base > 0 )
641 p_sys->i_pts += CLOCK_FREQ *
642 (2 + p_sys->p_ff_pic->repeat_pict) *
643 p_dec->fmt_in.video.i_frame_rate_base /
644 (2 * p_dec->fmt_in.video.i_frame_rate);
646 else if( p_context->time_base.den > 0 )
648 int i_tick = p_context->ticks_per_frame;
652 p_sys->i_pts += CLOCK_FREQ *
653 (2 + p_sys->p_ff_pic->repeat_pict) *
654 i_tick * p_context->time_base.num /
655 (2 * p_context->time_base.den);
659 /* Update frame late count (except when doing preroll) */
660 mtime_t i_display_date = 0;
661 if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
662 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
664 if( i_display_date > 0 && i_display_date <= mdate() )
666 p_sys->i_late_frames++;
667 if( p_sys->i_late_frames == 1 )
668 p_sys->i_late_frames_start = mdate();
672 p_sys->i_late_frames = 0;
675 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
678 if( p_sys->p_va != NULL || p_sys->p_ff_pic->opaque == NULL )
680 /* Get a new picture */
681 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
685 block_Release( p_block );
689 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
691 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
695 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
696 decoder_LinkPicture( p_dec, p_pic );
699 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
701 /* Fetch again the aspect ratio in case it changed */
702 p_dec->fmt_out.video.i_sar_num
703 = p_context->sample_aspect_ratio.num;
704 p_dec->fmt_out.video.i_sar_den
705 = p_context->sample_aspect_ratio.den;
707 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
709 p_dec->fmt_out.video.i_sar_num = 1;
710 p_dec->fmt_out.video.i_sar_den = 1;
714 /* Send decoded frame to vout */
715 if( i_pts > VLC_TS_INVALID)
719 if( p_sys->b_first_frame )
721 /* Hack to force display of still pictures */
722 p_sys->b_first_frame = false;
723 p_pic->b_force = true;
726 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
727 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
728 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
734 decoder_DeletePicture( p_dec, p_pic );
739 block_Release( p_block );
743 /*****************************************************************************
744 * EndVideo: decoder destruction
745 *****************************************************************************
746 * This function is called when the thread ends after a successful
748 *****************************************************************************/
749 void EndVideoDec( decoder_t *p_dec )
751 decoder_sys_t *p_sys = p_dec->p_sys;
755 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
756 if( p_sys->p_context->codec )
757 avcodec_flush_buffers( p_sys->p_context );
761 if( p_sys->p_ff_pic )
762 av_free( p_sys->p_ff_pic );
765 vlc_va_Delete( p_sys->p_va );
767 vlc_sem_destroy( &p_sys->sem_mt );
770 /*****************************************************************************
771 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
772 *****************************************************************************/
773 static void ffmpeg_InitCodec( decoder_t *p_dec )
775 decoder_sys_t *p_sys = p_dec->p_sys;
776 int i_size = p_dec->fmt_in.i_extra;
778 if( !i_size ) return;
780 if( p_sys->i_codec_id == AV_CODEC_ID_SVQ3 )
784 p_sys->p_context->extradata_size = i_size + 12;
785 p = p_sys->p_context->extradata =
786 av_malloc( p_sys->p_context->extradata_size +
787 FF_INPUT_BUFFER_PADDING_SIZE );
791 memcpy( &p[0], "SVQ3", 4 );
792 memset( &p[4], 0, 8 );
793 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
795 /* Now remove all atoms before the SMI one */
796 if( p_sys->p_context->extradata_size > 0x5a &&
797 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
799 uint8_t *psz = &p[0x52];
801 while( psz < &p[p_sys->p_context->extradata_size - 8] )
803 int i_size = GetDWBE( psz );
806 /* FIXME handle 1 as long size */
809 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
811 memmove( &p[0x52], psz,
812 &p[p_sys->p_context->extradata_size] - psz );
822 p_sys->p_context->extradata_size = i_size;
823 p_sys->p_context->extradata =
824 av_malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
825 if( p_sys->p_context->extradata )
827 memcpy( p_sys->p_context->extradata,
828 p_dec->fmt_in.p_extra, i_size );
829 memset( p_sys->p_context->extradata + i_size,
830 0, FF_INPUT_BUFFER_PADDING_SIZE );
835 /*****************************************************************************
836 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
837 * picture_t structure (when not in direct rendering mode).
838 *****************************************************************************/
839 static void ffmpeg_CopyPicture( decoder_t *p_dec,
840 picture_t *p_pic, AVFrame *p_ff_pic )
842 decoder_sys_t *p_sys = p_dec->p_sys;
846 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic->opaque,
849 else if( FindVlcChroma( p_sys->p_context->pix_fmt ) )
851 int i_plane, i_size, i_line;
852 uint8_t *p_dst, *p_src;
853 int i_src_stride, i_dst_stride;
855 if( p_sys->p_context->pix_fmt == PIX_FMT_PAL8 )
857 if( !p_pic->format.p_palette )
858 p_pic->format.p_palette = calloc( 1, sizeof(video_palette_t) );
860 if( p_pic->format.p_palette )
862 p_pic->format.p_palette->i_entries = AVPALETTE_COUNT;
863 memcpy( p_pic->format.p_palette->palette, p_ff_pic->data[1], AVPALETTE_SIZE );
867 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
869 p_src = p_ff_pic->data[i_plane];
870 p_dst = p_pic->p[i_plane].p_pixels;
871 i_src_stride = p_ff_pic->linesize[i_plane];
872 i_dst_stride = p_pic->p[i_plane].i_pitch;
874 i_size = __MIN( i_src_stride, i_dst_stride );
875 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
878 memcpy( p_dst, p_src, i_size );
879 p_src += i_src_stride;
880 p_dst += i_dst_stride;
886 const char *name = av_get_pix_fmt_name( p_sys->p_context->pix_fmt );
887 msg_Err( p_dec, "Unsupported decoded output format %d (%s)",
888 p_sys->p_context->pix_fmt, name ? name : "unknown" );
893 #if LIBAVCODEC_VERSION_MAJOR >= 55
894 static int lavc_va_GetFrame(struct AVCodecContext *ctx, AVFrame *frame,
897 decoder_t *dec = ctx->opaque;
898 decoder_sys_t *sys = dec->p_sys;
899 vlc_va_t *va = sys->p_va;
901 if (vlc_va_Setup(va, &ctx->hwaccel_context, &dec->fmt_out.video.i_chroma,
902 ctx->coded_width, ctx->coded_height))
904 msg_Err(dec, "hardware acceleration setup failed");
907 if (vlc_va_Get(va, &frame->opaque, &frame->data[0]))
909 msg_Err(dec, "hardware acceleration picture allocation failed");
912 /* data[0] must be non-NULL for libavcodec internal checks.
913 * data[3] actually contains the format-specific surface handle. */
914 frame->data[3] = frame->data[0];
916 frame->buf[0] = av_buffer_create(frame->data[0], 0, va->release,
918 if (unlikely(frame->buf[0] == NULL))
920 vlc_va_Release(va, frame->opaque, frame->data[0]);
923 assert(frame->data[0] != NULL);
934 static void lavc_dr_ReleaseFrame(void *opaque, uint8_t *data)
936 lavc_pic_ref_t *ref = opaque;
938 decoder_UnlinkPicture(ref->decoder, ref->picture);
943 static picture_t *lavc_dr_GetFrame(struct AVCodecContext *ctx,
944 AVFrame *frame, int flags)
946 decoder_t *dec = (decoder_t *)ctx->opaque;
947 decoder_sys_t *sys = dec->p_sys;
949 if (GetVlcChroma(&dec->fmt_out.video, ctx->pix_fmt) != VLC_SUCCESS)
951 dec->fmt_out.i_codec = dec->fmt_out.video.i_chroma;
952 if (ctx->pix_fmt == PIX_FMT_PAL8)
955 int width = frame->width;
956 int height = frame->height;
957 int aligns[AV_NUM_DATA_POINTERS];
959 avcodec_align_dimensions2(ctx, &width, &height, aligns);
961 picture_t *pic = ffmpeg_NewPictBuf(dec, ctx);
965 /* Check that the picture is suitable for libavcodec */
966 if (pic->p[0].i_pitch < width * pic->p[0].i_pixel_pitch)
968 if (sys->i_direct_rendering_used != 0)
969 msg_Dbg(dec, "plane 0: pitch too small (%d/%d*%d)",
970 pic->p[0].i_pitch, width, pic->p[0].i_pixel_pitch);
974 if (pic->p[0].i_lines < height)
976 if (sys->i_direct_rendering_used != 0)
977 msg_Dbg(dec, "plane 0: lines too few (%d/%d)",
978 pic->p[0].i_lines, height);
982 for (int i = 0; i < pic->i_planes; i++)
984 if (pic->p[i].i_pitch % aligns[i])
986 if (sys->i_direct_rendering_used != 0)
987 msg_Dbg(dec, "plane %d: pitch not aligned (%d%%%d)",
988 i, pic->p[i].i_pitch, aligns[i]);
991 if (((uintptr_t)pic->p[i].p_pixels) % aligns[i])
993 if (sys->i_direct_rendering_used != 0)
994 msg_Warn(dec, "plane %d not aligned", i);
999 /* Allocate buffer references */
1000 for (int i = 0; i < pic->i_planes; i++)
1002 lavc_pic_ref_t *ref = malloc(sizeof (*ref));
1007 decoder_LinkPicture(dec, pic);
1009 uint8_t *data = pic->p[i].p_pixels;
1010 int size = pic->p[i].i_pitch * pic->p[i].i_lines;
1012 frame->buf[i] = av_buffer_create(data, size, lavc_dr_ReleaseFrame,
1014 if (unlikely(frame->buf[i] == NULL))
1016 lavc_dr_ReleaseFrame(ref, data);
1020 decoder_UnlinkPicture(dec, pic);
1024 for (unsigned i = 0; frame->buf[i] != NULL; i++)
1025 av_buffer_unref(&frame->buf[i]);
1027 decoder_DeletePicture(dec, pic);
1032 * Callback used by libavcodec to get a frame buffer.
1034 * It is used for direct rendering as well as to get the right PTS for each
1035 * decoded picture (even in indirect rendering mode).
1037 static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
1039 decoder_t *dec = ctx->opaque;
1040 decoder_sys_t *sys = dec->p_sys;
1043 for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
1045 frame->data[i] = NULL;
1046 frame->linesize[i] = 0;
1047 frame->buf[i] = NULL;
1050 if (sys->p_va != NULL)
1051 return lavc_va_GetFrame(ctx, frame, flags);
1053 frame->opaque = NULL;
1054 if (!sys->b_direct_rendering)
1055 return avcodec_default_get_buffer2(ctx, frame, flags);
1057 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1058 * so we need to check for direct rendering again. */
1060 pic = lavc_dr_GetFrame(ctx, frame, flags);
1063 if (sys->i_direct_rendering_used != 0)
1065 msg_Warn(dec, "disabling direct rendering");
1066 sys->i_direct_rendering_used = 0;
1069 return avcodec_default_get_buffer2(ctx, frame, flags);
1072 if (sys->i_direct_rendering_used != 1)
1074 msg_Dbg(dec, "enabling direct rendering");
1075 sys->i_direct_rendering_used = 1;
1079 frame->opaque = pic;
1080 static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!");
1081 for (unsigned i = 0; i < PICTURE_PLANE_MAX; i++)
1083 frame->data[i] = pic->p[i].p_pixels;
1084 frame->linesize[i] = pic->p[i].i_pitch;
1089 static int ffmpeg_va_GetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1091 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1092 decoder_sys_t *p_sys = p_dec->p_sys;
1093 vlc_va_t *p_va = p_sys->p_va;
1095 /* hwaccel_context is not present in old ffmpeg version */
1096 if( vlc_va_Setup( p_va,
1097 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
1098 p_context->coded_width, p_context->coded_height ) )
1100 msg_Err( p_dec, "vlc_va_Setup failed" );
1104 if( vlc_va_Get( p_va, &p_ff_pic->opaque, &p_ff_pic->data[0] ) )
1106 msg_Err( p_dec, "vlc_va_Get failed" );
1110 p_ff_pic->data[3] = p_ff_pic->data[0];
1111 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1115 static picture_t *ffmpeg_dr_GetFrameBuf(struct AVCodecContext *p_context)
1117 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1118 decoder_sys_t *p_sys = p_dec->p_sys;
1120 int i_width = p_context->width;
1121 int i_height = p_context->height;
1122 avcodec_align_dimensions( p_context, &i_width, &i_height );
1124 picture_t *p_pic = NULL;
1125 if (GetVlcChroma(&p_dec->fmt_out.video, p_context->pix_fmt) != VLC_SUCCESS)
1128 if (p_context->pix_fmt == PIX_FMT_PAL8)
1131 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1133 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1137 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1138 p_pic->p[0].i_lines < i_height )
1141 for( int i = 0; i < p_pic->i_planes; i++ )
1144 switch( p_sys->i_codec_id )
1146 case AV_CODEC_ID_SVQ1:
1147 case AV_CODEC_ID_VP5:
1148 case AV_CODEC_ID_VP6:
1149 case AV_CODEC_ID_VP6F:
1150 case AV_CODEC_ID_VP6A:
1154 i_align = i == 0 ? 16 : 8;
1157 if( p_pic->p[i].i_pitch % i_align )
1159 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1163 if( p_context->pix_fmt == PIX_FMT_YUV422P )
1165 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1166 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1174 decoder_DeletePicture( p_dec, p_pic );
1179 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
1182 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1183 decoder_sys_t *p_sys = p_dec->p_sys;
1186 p_ff_pic->opaque = NULL;
1187 #if ! LIBAVCODEC_VERSION_CHECK(54, 34, 0, 79, 101)
1188 p_ff_pic->pkt_pts = p_context->pkt ? p_context->pkt->pts : AV_NOPTS_VALUE;
1192 return ffmpeg_va_GetFrameBuf(p_context, p_ff_pic);
1194 if( !p_sys->b_direct_rendering )
1195 return avcodec_default_get_buffer( p_context, p_ff_pic );
1198 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1199 * so we need to check for direct rendering again. */
1201 picture_t *p_pic = ffmpeg_dr_GetFrameBuf(p_context);
1203 if( p_sys->i_direct_rendering_used != 0 )
1205 msg_Warn( p_dec, "disabling direct rendering" );
1206 p_sys->i_direct_rendering_used = 0;
1210 return avcodec_default_get_buffer( p_context, p_ff_pic );
1213 if( p_sys->i_direct_rendering_used != 1 ) {
1214 msg_Dbg( p_dec, "using direct rendering" );
1215 p_sys->i_direct_rendering_used = 1;
1218 p_context->draw_horiz_band = NULL;
1221 p_ff_pic->opaque = (void*)p_pic;
1222 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1223 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1224 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1225 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1226 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1228 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1229 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1230 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1231 p_ff_pic->linesize[3] = 0;
1236 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1239 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1240 decoder_sys_t *p_sys = p_dec->p_sys;
1243 vlc_va_Release( p_sys->p_va, p_ff_pic->opaque, p_ff_pic->data[0] );
1244 else if( p_ff_pic->opaque )
1245 decoder_UnlinkPicture( p_dec, (picture_t*)p_ff_pic->opaque);
1246 else if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1247 /* We can end up here without the AVFrame being allocated by
1248 * avcodec_default_get_buffer() if VA is used and the frame is
1249 * released when the decoder is closed
1251 avcodec_default_release_buffer( p_context, p_ff_pic );
1253 for( int i = 0; i < 4; i++ )
1254 p_ff_pic->data[i] = NULL;
1258 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1259 const enum PixelFormat *pi_fmt )
1261 decoder_t *p_dec = p_context->opaque;
1262 decoder_sys_t *p_sys = p_dec->p_sys;
1263 vlc_va_t *p_va = p_sys->p_va;
1266 vlc_va_Delete( p_va );
1268 /* Enumerate available formats */
1269 bool can_hwaccel = false;
1270 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1272 const AVPixFmtDescriptor *dsc = av_pix_fmt_desc_get(pi_fmt[i]);
1275 bool hwaccel = (dsc->flags & AV_PIX_FMT_FLAG_HWACCEL) != 0;
1277 msg_Dbg( p_dec, "available %sware decoder output format %d (%s)",
1278 hwaccel ? "hard" : "soft", pi_fmt[i], dsc->name );
1286 /* Profile and level information is needed now.
1287 * TODO: avoid code duplication with avcodec.c */
1288 if( p_context->profile != FF_PROFILE_UNKNOWN)
1289 p_dec->fmt_in.i_profile = p_context->profile;
1290 if( p_context->level != FF_LEVEL_UNKNOWN)
1291 p_dec->fmt_in.i_level = p_context->level;
1293 p_va = vlc_va_New( VLC_OBJECT(p_dec), p_context, &p_dec->fmt_in );
1297 for( size_t i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1299 if( p_va->pix_fmt != pi_fmt[i] )
1302 /* We try to call vlc_va_Setup when possible to detect errors when
1303 * possible (later is too late) */
1304 if( p_context->width > 0 && p_context->height > 0
1305 && vlc_va_Setup( p_va, &p_context->hwaccel_context,
1306 &p_dec->fmt_out.video.i_chroma,
1307 p_context->width, p_context->height ) )
1309 msg_Err( p_dec, "acceleration setup failure" );
1313 if( p_va->description )
1314 msg_Info( p_dec, "Using %s for hardware decoding.",
1315 p_va->description );
1317 /* FIXME this will disable direct rendering
1318 * even if a new pixel format is renegotiated
1320 p_sys->b_direct_rendering = false;
1322 p_context->draw_horiz_band = NULL;
1326 vlc_va_Delete( p_va );
1329 /* Fallback to default behaviour */
1331 return avcodec_default_get_format( p_context, pi_fmt );