1 /*****************************************************************************
2 * video.c: video decoder using the libavcodec library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 the VideoLAN team
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
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 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 General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #if defined(HAVE_LIBAVCODEC_AVCODEC_H) && defined(HAVE_AVCODEC_DXVA2)
33 # if _WIN32_WINNT < 0x600
34 /* dxva2 needs Vista support */
36 # define _WIN32_WINNT 0x600
40 #include <vlc_common.h>
41 #include <vlc_codec.h>
42 #include <vlc_avcodec.h>
46 #include <libavcodec/avcodec.h>
47 #include <libavutil/mem.h>
48 #ifdef HAVE_AVCODEC_VAAPI
49 # include <libavcodec/vaapi.h>
51 #ifdef HAVE_AVCODEC_DXVA2
52 # include <libavcodec/dxva2.h>
54 #ifdef HAVE_AVCODEC_VDA
55 # include <libavcodec/vda.h>
60 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2) || defined(HAVE_AVCODEC_VDA)
61 # define HAVE_AVCODEC_VA
64 /*****************************************************************************
65 * decoder_sys_t : decoder descriptor
66 *****************************************************************************/
69 AVCODEC_COMMON_MEMBERS
71 /* Video decoder specific part */
76 /* for frame skipping algo */
78 enum AVDiscard i_skip_frame;
79 enum AVDiscard i_skip_idct;
81 /* how many decoded frames are late */
83 mtime_t i_late_frames_start;
85 /* for direct rendering */
86 bool b_direct_rendering;
87 int i_direct_rendering_used;
91 /* Hack to force display of still pictures */
96 #if LIBAVCODEC_VERSION_MAJOR < 54
97 AVPaletteControl palette;
111 #ifdef HAVE_AVCODEC_MT
112 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
113 # define post_mt(s) vlc_sem_post( &s->sem_mt )
119 /*****************************************************************************
121 *****************************************************************************/
122 static void ffmpeg_InitCodec ( decoder_t * );
123 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
124 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
125 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
126 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
128 #ifdef HAVE_AVCODEC_VA
129 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
130 const enum PixelFormat * );
133 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
135 uint8_t *p = (uint8_t*)&fcc;
136 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
139 /*****************************************************************************
141 *****************************************************************************/
143 /* Returns a new picture buffer */
144 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
145 AVCodecContext *p_context )
147 decoder_sys_t *p_sys = p_dec->p_sys;
149 p_dec->fmt_out.video.i_width = p_context->width;
150 p_dec->fmt_out.video.i_height = p_context->height;
152 if( !p_context->width || !p_context->height )
154 return NULL; /* invalid display size */
157 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
159 /* we are doomed, but not really, because most codecs set their pix_fmt
161 * FIXME does it make sense here ? */
162 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
164 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
166 /* If an aspect-ratio was specified in the input format then force it */
167 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
169 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
170 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
174 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
175 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
177 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
179 p_dec->fmt_out.video.i_sar_num = 1;
180 p_dec->fmt_out.video.i_sar_den = 1;
184 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
185 p_dec->fmt_in.video.i_frame_rate_base > 0 )
187 p_dec->fmt_out.video.i_frame_rate =
188 p_dec->fmt_in.video.i_frame_rate;
189 p_dec->fmt_out.video.i_frame_rate_base =
190 p_dec->fmt_in.video.i_frame_rate_base;
192 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
194 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
195 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
198 return decoder_NewPicture( p_dec );
201 /*****************************************************************************
202 * InitVideo: initialize the video decoder
203 *****************************************************************************
204 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
205 * opened (done after the first decoded frame).
206 *****************************************************************************/
207 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
208 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
210 decoder_sys_t *p_sys;
213 /* Allocate the memory needed to store the decoder's structure */
214 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
217 p_codec->type = AVMEDIA_TYPE_VIDEO;
218 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
219 p_context->codec_id = i_codec_id;
220 p_sys->p_context = p_context;
221 p_sys->p_codec = p_codec;
222 p_sys->i_codec_id = i_codec_id;
223 p_sys->psz_namecodec = psz_namecodec;
224 p_sys->p_ff_pic = avcodec_alloc_frame();
225 p_sys->b_delayed_open = true;
227 vlc_sem_init( &p_sys->sem_mt, 0 );
229 /* ***** Fill p_context with init values ***** */
230 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
232 /* ***** Get configuration of ffmpeg plugin ***** */
233 p_sys->p_context->workaround_bugs =
234 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
235 #if LIBAVCODEC_VERSION_MAJOR < 54
236 p_sys->p_context->error_recognition =
238 p_sys->p_context->err_recognition =
240 var_InheritInteger( p_dec, "avcodec-error-resilience" );
242 if( var_CreateGetBool( p_dec, "grayscale" ) )
243 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
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-lowres" );
249 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
251 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
252 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
253 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
254 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
255 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
257 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
258 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
260 /* ***** libavcodec frame skipping ***** */
261 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
263 switch( var_CreateGetInteger( p_dec, "avcodec-skip-frame" ) )
266 p_sys->p_context->skip_frame = AVDISCARD_NONE;
269 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
272 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
275 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
278 p_sys->p_context->skip_frame = AVDISCARD_ALL;
281 p_sys->p_context->skip_frame = AVDISCARD_NONE;
284 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
286 switch( var_CreateGetInteger( p_dec, "avcodec-skip-idct" ) )
289 p_sys->p_context->skip_idct = AVDISCARD_NONE;
292 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
295 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
298 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
301 p_sys->p_context->skip_idct = AVDISCARD_ALL;
304 p_sys->p_context->skip_idct = AVDISCARD_NONE;
307 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
309 /* ***** libavcodec direct rendering ***** */
310 p_sys->b_direct_rendering = false;
311 p_sys->i_direct_rendering_used = -1;
312 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
313 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
314 /* No idea why ... but this fixes flickering on some TSCC streams */
315 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
316 p_sys->i_codec_id != CODEC_ID_CINEPAK &&
317 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
318 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
319 don't have idea howto implement fallback to libvpx decoder */
320 p_sys->i_codec_id != CODEC_ID_VP8 &&
322 !p_sys->p_context->debug_mv )
324 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
325 * so we need to do another check in ffmpeg_GetFrameBuf() */
326 p_sys->b_direct_rendering = true;
329 /* libavcodec doesn't properly release old pictures when frames are skipped */
330 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
331 if( p_sys->b_direct_rendering )
333 msg_Dbg( p_dec, "trying to use direct rendering" );
334 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
338 msg_Dbg( p_dec, "direct rendering is disabled" );
341 /* Always use our get_buffer wrapper so we can calculate the
343 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
344 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
345 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
346 p_sys->p_context->opaque = p_dec;
348 #ifdef HAVE_AVCODEC_MT
349 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
350 if( i_thread_count <= 0 )
352 i_thread_count = vlc_GetCPUCount();
353 if( i_thread_count > 1 )
356 //FIXME: take in count the decoding time
357 i_thread_count = __MIN( i_thread_count, 4 );
359 i_thread_count = __MIN( i_thread_count, 16 );
360 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
361 p_sys->p_context->thread_count = i_thread_count;
364 #ifdef HAVE_AVCODEC_VA
365 const bool b_use_hw = var_CreateGetBool( p_dec, "avcodec-hw" );
367 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
368 i_codec_id == CODEC_ID_MPEG4 ||
369 i_codec_id == CODEC_ID_H264 ||
370 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
372 #ifdef HAVE_AVCODEC_MT
373 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
375 msg_Warn( p_dec, "threaded frame decoding is not compatible with libavcodec-hw, disabled" );
376 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
378 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
379 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
381 msg_Warn( p_dec, "threaded slice decoding is not compatible with libavcodec-hw, disabled" );
382 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
385 p_sys->p_context->get_format = ffmpeg_GetFormat;
388 #ifdef HAVE_AVCODEC_MT
389 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
390 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
394 /* ***** misc init ***** */
395 p_sys->i_pts = VLC_TS_INVALID;
396 p_sys->b_has_b_frames = false;
397 p_sys->b_first_frame = true;
398 p_sys->b_flush = false;
399 p_sys->i_late_frames = 0;
401 /* Set output properties */
402 p_dec->fmt_out.i_cat = VIDEO_ES;
403 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
405 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
406 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
408 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
410 #if LIBAVCODEC_VERSION_MAJOR < 54
412 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
413 if( p_dec->fmt_in.video.p_palette )
415 p_sys->palette.palette_changed = 1;
417 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
423 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
424 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
425 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
426 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
428 p_sys->palette.palette[i] = c.u;
430 p_sys->p_context->palctrl = &p_sys->palette;
432 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
433 if( p_dec->fmt_out.video.p_palette )
434 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
436 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
438 p_sys->p_context->palctrl = &p_sys->palette;
444 /* ***** init this codec with special data ***** */
445 ffmpeg_InitCodec( p_dec );
447 /* ***** Open the codec ***** */
448 if( ffmpeg_OpenCodec( p_dec ) < 0 )
450 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
451 av_free( p_sys->p_ff_pic );
452 vlc_sem_destroy( &p_sys->sem_mt );
460 /*****************************************************************************
461 * DecodeVideo: Called to decode one or more frames
462 *****************************************************************************/
463 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
465 decoder_sys_t *p_sys = p_dec->p_sys;
466 AVCodecContext *p_context = p_sys->p_context;
468 int b_null_size = false;
471 if( !pp_block || !*pp_block )
474 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
476 ffmpeg_InitCodec( p_dec );
477 if( p_sys->b_delayed_open )
479 if( ffmpeg_OpenCodec( p_dec ) )
480 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
485 if( p_sys->b_delayed_open )
487 block_Release( p_block );
491 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
493 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
495 p_sys->i_late_frames = 0;
497 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
498 avcodec_flush_buffers( p_context );
500 block_Release( p_block );
504 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
506 /* Do not care about late frames when prerolling
507 * TODO avoid decoding of non reference frame
508 * (ie all B except for H264 where it depends only on nal_ref_idc) */
509 p_sys->i_late_frames = 0;
512 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
513 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
515 if( p_sys->i_pts > VLC_TS_INVALID )
517 msg_Err( p_dec, "more than 5 seconds of late video -> "
518 "dropping frame (computer too slow ?)" );
519 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
521 block_Release( p_block );
522 p_sys->i_late_frames--;
526 /* A good idea could be to decode all I pictures and see for the other */
527 if( !p_dec->b_pace_control &&
529 (p_sys->i_late_frames > 4) )
532 if( p_sys->i_late_frames < 12 )
534 p_context->skip_frame =
535 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
536 AVDISCARD_NONREF : p_sys->i_skip_frame;
540 /* picture too late, won't decode
541 * but break picture until a new I, and for mpeg4 ...*/
542 p_sys->i_late_frames--; /* needed else it will never be decrease */
543 block_Release( p_block );
549 if( p_sys->b_hurry_up )
550 p_context->skip_frame = p_sys->i_skip_frame;
551 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
557 if( p_context->width <= 0 || p_context->height <= 0 )
559 if( p_sys->b_hurry_up )
560 p_context->skip_frame = p_sys->i_skip_frame;
563 else if( !b_drawpicture )
565 /* It creates broken picture
566 * FIXME either our parser or ffmpeg is broken */
568 if( p_sys->b_hurry_up )
569 p_context->skip_frame = __MAX( p_context->skip_frame,
575 * Do the actual decoding now */
577 /* Don't forget that libavcodec requires a little more bytes
578 * that the real frame size */
579 if( p_block->i_buffer > 0 )
581 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
583 p_block = block_Realloc( p_block, 0,
584 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
587 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
589 memset( p_block->p_buffer + p_block->i_buffer, 0,
590 FF_INPUT_BUFFER_PADDING_SIZE );
593 while( p_block->i_buffer > 0 || p_sys->b_flush )
595 int i_used, b_gotpicture;
599 /* Set the PTS/DTS in the context reordered_opaque field */
600 if( p_block->i_pts > VLC_TS_INVALID )
601 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
602 else if( p_block->i_dts > VLC_TS_INVALID )
603 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
605 p_context->reordered_opaque = INT64_MIN;
606 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
608 /* Make sure we don't reuse the same timestamps twice */
610 p_block->i_dts = VLC_TS_INVALID;
614 av_init_packet( &pkt );
615 pkt.data = p_block->p_buffer;
616 pkt.size = p_block->i_buffer;
617 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
618 &b_gotpicture, &pkt );
620 if( b_null_size && !p_sys->b_flush &&
621 p_context->width > 0 && p_context->height > 0 )
623 /* Reparse it to not drop the I frame */
625 if( p_sys->b_hurry_up )
626 p_context->skip_frame = p_sys->i_skip_frame;
627 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
628 &b_gotpicture, &pkt );
633 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( 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;
656 /* Nothing to display */
659 if( i_used == 0 ) break;
663 /* Sanity check (seems to be needed for some streams) */
664 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
666 p_sys->b_has_b_frames = true;
669 /* Compute the PTS */
670 mtime_t i_pts = VLC_TS_INVALID;
671 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
673 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
674 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
677 if( !p_context->has_b_frames ||
678 !p_sys->b_has_b_frames ||
679 !p_sys->p_ff_pic->reference ||
680 p_sys->i_pts <= VLC_TS_INVALID )
683 /* Guess what ? The rules are different for Real Video :( */
684 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
685 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
686 p_sys->b_has_b_frames )
688 i_pts = VLC_TS_INVALID;
689 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
697 if( i_pts <= VLC_TS_INVALID )
698 i_pts = p_sys->i_pts;
700 /* Interpolate the next PTS */
701 if( i_pts > VLC_TS_INVALID )
702 p_sys->i_pts = i_pts;
703 if( p_sys->i_pts > VLC_TS_INVALID )
705 /* interpolate the next PTS */
706 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
707 p_dec->fmt_in.video.i_frame_rate_base > 0 )
709 p_sys->i_pts += INT64_C(1000000) *
710 (2 + p_sys->p_ff_pic->repeat_pict) *
711 p_dec->fmt_in.video.i_frame_rate_base /
712 (2 * p_dec->fmt_in.video.i_frame_rate);
714 else if( p_context->time_base.den > 0 )
716 int i_tick = p_context->ticks_per_frame;
720 p_sys->i_pts += INT64_C(1000000) *
721 (2 + p_sys->p_ff_pic->repeat_pict) *
722 i_tick * p_context->time_base.num /
723 (2 * p_context->time_base.den);
727 /* Update frame late count (except when doing preroll) */
728 mtime_t i_display_date = 0;
729 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
730 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
732 if( i_display_date > 0 && i_display_date <= mdate() )
734 p_sys->i_late_frames++;
735 if( p_sys->i_late_frames == 1 )
736 p_sys->i_late_frames_start = mdate();
740 p_sys->i_late_frames = 0;
743 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
746 if( !p_sys->p_ff_pic->opaque )
748 /* Get a new picture */
749 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
752 block_Release( p_block );
756 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
758 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
762 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
763 decoder_LinkPicture( p_dec, p_pic );
766 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
768 /* Fetch again the aspect ratio in case it changed */
769 p_dec->fmt_out.video.i_sar_num
770 = p_context->sample_aspect_ratio.num;
771 p_dec->fmt_out.video.i_sar_den
772 = p_context->sample_aspect_ratio.den;
774 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
776 p_dec->fmt_out.video.i_sar_num = 1;
777 p_dec->fmt_out.video.i_sar_den = 1;
781 /* Send decoded frame to vout */
782 if( i_pts > VLC_TS_INVALID)
786 if( p_sys->b_first_frame )
788 /* Hack to force display of still pictures */
789 p_sys->b_first_frame = false;
790 p_pic->b_force = true;
793 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
794 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
795 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
797 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
798 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
799 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
800 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
801 p_pic->i_qstride * i_mb_h );
802 switch( p_sys->p_ff_pic->qscale_type )
804 case FF_QSCALE_TYPE_MPEG1:
805 p_pic->i_qtype = QTYPE_MPEG1;
807 case FF_QSCALE_TYPE_MPEG2:
808 p_pic->i_qtype = QTYPE_MPEG2;
810 case FF_QSCALE_TYPE_H264:
811 p_pic->i_qtype = QTYPE_H264;
819 decoder_DeletePicture( p_dec, p_pic );
823 block_Release( p_block );
827 /*****************************************************************************
828 * EndVideo: decoder destruction
829 *****************************************************************************
830 * This function is called when the thread ends after a successful
832 *****************************************************************************/
833 void EndVideoDec( decoder_t *p_dec )
835 decoder_sys_t *p_sys = p_dec->p_sys;
839 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
840 if( p_sys->p_context->codec )
841 avcodec_flush_buffers( p_sys->p_context );
845 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
849 vlc_va_Delete( p_sys->p_va );
852 vlc_sem_destroy( &p_sys->sem_mt );
855 /*****************************************************************************
856 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
857 *****************************************************************************/
858 static void ffmpeg_InitCodec( decoder_t *p_dec )
860 decoder_sys_t *p_sys = p_dec->p_sys;
861 int i_size = p_dec->fmt_in.i_extra;
863 if( !i_size ) return;
865 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
869 p_sys->p_context->extradata_size = i_size + 12;
870 p = p_sys->p_context->extradata =
871 malloc( p_sys->p_context->extradata_size );
875 memcpy( &p[0], "SVQ3", 4 );
876 memset( &p[4], 0, 8 );
877 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
879 /* Now remove all atoms before the SMI one */
880 if( p_sys->p_context->extradata_size > 0x5a &&
881 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
883 uint8_t *psz = &p[0x52];
885 while( psz < &p[p_sys->p_context->extradata_size - 8] )
887 int i_size = GetDWBE( psz );
890 /* FIXME handle 1 as long size */
893 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
895 memmove( &p[0x52], psz,
896 &p[p_sys->p_context->extradata_size] - psz );
906 p_sys->p_context->extradata_size = i_size;
907 p_sys->p_context->extradata =
908 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
909 if( p_sys->p_context->extradata )
911 memcpy( p_sys->p_context->extradata,
912 p_dec->fmt_in.p_extra, i_size );
913 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
914 0, FF_INPUT_BUFFER_PADDING_SIZE );
919 /*****************************************************************************
920 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
921 * picture_t structure (when not in direct rendering mode).
922 *****************************************************************************/
923 static void ffmpeg_CopyPicture( decoder_t *p_dec,
924 picture_t *p_pic, AVFrame *p_ff_pic )
926 decoder_sys_t *p_sys = p_dec->p_sys;
930 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
932 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
934 int i_plane, i_size, i_line;
935 uint8_t *p_dst, *p_src;
936 int i_src_stride, i_dst_stride;
938 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
940 p_src = p_ff_pic->data[i_plane];
941 p_dst = p_pic->p[i_plane].p_pixels;
942 i_src_stride = p_ff_pic->linesize[i_plane];
943 i_dst_stride = p_pic->p[i_plane].i_pitch;
945 i_size = __MIN( i_src_stride, i_dst_stride );
946 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
949 memcpy( p_dst, p_src, i_size );
950 p_src += i_src_stride;
951 p_dst += i_dst_stride;
957 msg_Err( p_dec, "don't know how to convert chroma %i",
958 p_sys->p_context->pix_fmt );
963 /*****************************************************************************
964 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
965 *****************************************************************************
966 * It is used for direct rendering as well as to get the right PTS for each
967 * decoded picture (even in indirect rendering mode).
968 *****************************************************************************/
969 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
972 decoder_t *p_dec = (decoder_t *)p_context->opaque;
973 decoder_sys_t *p_sys = p_dec->p_sys;
977 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
978 p_ff_pic->opaque = NULL;
982 #ifdef HAVE_AVCODEC_VA
983 /* hwaccel_context is not present in old ffmpeg version */
984 if( vlc_va_Setup( p_sys->p_va,
985 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
986 p_context->width, p_context->height ) )
988 msg_Err( p_dec, "vlc_va_Setup failed" );
996 p_ff_pic->type = FF_BUFFER_TYPE_USER;
998 #if LIBAVCODEC_VERSION_MAJOR < 54
999 p_ff_pic->age = 256*256*256*64;
1002 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
1004 msg_Err( p_dec, "VaGrabSurface failed" );
1009 else if( !p_sys->b_direct_rendering )
1011 /* Not much to do in indirect rendering mode. */
1012 return avcodec_default_get_buffer( p_context, p_ff_pic );
1016 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1017 * so we need to check for direct rendering again. */
1019 int i_width = p_context->width;
1020 int i_height = p_context->height;
1021 avcodec_align_dimensions( p_context, &i_width, &i_height );
1023 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1024 p_context->pix_fmt == PIX_FMT_PAL8 )
1027 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1029 /* Get a new picture */
1030 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1033 bool b_compatible = true;
1034 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1035 p_pic->p[0].i_lines < i_height )
1036 b_compatible = false;
1037 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1040 switch( p_sys->i_codec_id )
1050 i_align = i == 0 ? 16 : 8;
1053 if( p_pic->p[i].i_pitch % i_align )
1054 b_compatible = false;
1055 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1056 b_compatible = false;
1058 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1060 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1061 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1062 b_compatible = false;
1066 decoder_DeletePicture( p_dec, p_pic );
1070 if( p_sys->i_direct_rendering_used != 1 )
1072 msg_Dbg( p_dec, "using direct rendering" );
1073 p_sys->i_direct_rendering_used = 1;
1076 p_context->draw_horiz_band = NULL;
1078 p_ff_pic->opaque = (void*)p_pic;
1079 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1080 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1081 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1082 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1083 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1085 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1086 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1087 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1088 p_ff_pic->linesize[3] = 0;
1090 #if LIBAVCODEC_VERSION_MAJOR < 54
1091 p_ff_pic->age = 256*256*256*64;
1098 if( p_sys->i_direct_rendering_used != 0 )
1100 msg_Warn( p_dec, "disabling direct rendering" );
1101 p_sys->i_direct_rendering_used = 0;
1104 return avcodec_default_get_buffer( p_context, p_ff_pic );
1106 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1108 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1110 /* We always use default reget function, it works perfectly fine */
1111 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1114 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1117 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1118 decoder_sys_t *p_sys = p_dec->p_sys;
1122 vlc_va_Release( p_sys->p_va, p_ff_pic );
1124 else if( !p_ff_pic->opaque )
1126 /* We can end up here without the AVFrame being allocated by
1127 * avcodec_default_get_buffer() if VA is used and the frame is
1128 * released when the decoder is closed
1130 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1131 avcodec_default_release_buffer( p_context, p_ff_pic );
1135 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1137 decoder_UnlinkPicture( p_dec, p_pic );
1139 for( int i = 0; i < 4; i++ )
1140 p_ff_pic->data[i] = NULL;
1143 #ifdef HAVE_AVCODEC_VA
1144 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1145 const enum PixelFormat *pi_fmt )
1147 decoder_t *p_dec = p_context->opaque;
1148 decoder_sys_t *p_sys = p_dec->p_sys;
1152 vlc_va_Delete( p_sys->p_va );
1156 /* Try too look for a supported hw acceleration */
1157 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1159 static const char *ppsz_name[PIX_FMT_NB] = {
1160 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1161 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1162 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1163 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1164 #ifdef HAVE_AVCODEC_DXVA2
1165 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1167 #ifdef HAVE_AVCODEC_VDA
1168 [PIX_FMT_VDA_VLD] = "PIX_FMT_VDA_VLD",
1170 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1171 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1173 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1175 /* Only VLD supported */
1176 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1178 if( !var_InheritBool( p_dec, "xlib" ) )
1180 msg_Warn( p_dec, "Ignoring VA API" );
1183 #ifdef HAVE_AVCODEC_VAAPI
1184 msg_Dbg( p_dec, "Trying VA API" );
1185 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1187 msg_Warn( p_dec, "Failed to open VA API" );
1192 #ifdef HAVE_AVCODEC_DXVA2
1193 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1195 msg_Dbg( p_dec, "Trying DXVA2" );
1196 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1198 msg_Warn( p_dec, "Failed to open DXVA2" );
1202 #ifdef HAVE_AVCODEC_VDA
1203 if( pi_fmt[i] == PIX_FMT_VDA_VLD )
1205 msg_Dbg( p_dec, "Trying VDA" );
1206 p_sys->p_va = vlc_va_NewVDA( VLC_OBJECT(p_dec), p_sys->i_codec_id, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
1208 msg_Warn( p_dec, "Failed to open VDA" );
1213 p_context->width > 0 && p_context->height > 0 )
1215 /* We try to call vlc_va_Setup when possible to detect errors when
1216 * possible (later is too late) */
1217 if( vlc_va_Setup( p_sys->p_va,
1218 &p_context->hwaccel_context,
1219 &p_dec->fmt_out.video.i_chroma,
1220 p_context->width, p_context->height ) )
1222 msg_Err( p_dec, "vlc_va_Setup failed" );
1223 vlc_va_Delete( p_sys->p_va );
1230 if( p_sys->p_va->description )
1231 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1233 /* FIXME this will disabled direct rendering
1234 * even if a new pixel format is renegociated
1236 p_sys->b_direct_rendering = false;
1237 p_context->draw_horiz_band = NULL;
1242 /* Fallback to default behaviour */
1243 return avcodec_default_get_format( p_context, pi_fmt );