1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg 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 #include <vlc_common.h>
33 #include <vlc_codec.h>
34 #include <vlc_codecs.h> /* BITMAPINFOHEADER */
35 #include <vlc_avcodec.h>
39 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
40 # include <libavcodec/avcodec.h>
41 # ifdef HAVE_AVCODEC_VAAPI
42 # include <libavcodec/vaapi.h>
44 # ifdef HAVE_AVCODEC_DXVA2
45 # include <libavcodec/dxva2.h>
47 #elif defined(HAVE_FFMPEG_AVCODEC_H)
48 # include <ffmpeg/avcodec.h>
55 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
56 # define HAVE_AVCODEC_VA
59 /*****************************************************************************
60 * decoder_sys_t : decoder descriptor
61 *****************************************************************************/
66 /* Video decoder specific part */
73 /* for frame skipping algo */
75 enum AVDiscard i_skip_frame;
76 enum AVDiscard i_skip_idct;
78 /* how many decoded frames are late */
80 mtime_t i_late_frames_start;
82 /* for direct rendering */
83 bool b_direct_rendering;
87 /* Hack to force display of still pictures */
91 AVPaletteControl palette;
100 /* FIXME (dummy palette for now) */
101 static const AVPaletteControl palette_control;
103 /*****************************************************************************
105 *****************************************************************************/
106 static void ffmpeg_InitCodec ( decoder_t * );
107 static int ffmpeg_OpenCodec ( decoder_t * );
108 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
109 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
110 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
111 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
112 static void ffmpeg_NextPts( decoder_t * );
114 #ifdef HAVE_AVCODEC_VA
115 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
116 const enum PixelFormat * );
119 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
121 uint8_t *p = (uint8_t*)&fcc;
122 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
125 /*****************************************************************************
127 *****************************************************************************/
129 /* Returns a new picture buffer */
130 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
131 AVCodecContext *p_context )
133 decoder_sys_t *p_sys = p_dec->p_sys;
135 p_dec->fmt_out.video.i_width = p_context->width;
136 p_dec->fmt_out.video.i_height = p_context->height;
138 if( !p_context->width || !p_context->height )
140 return NULL; /* invalid display size */
143 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
145 /* we are doomed, but not really, because most codecs set their pix_fmt
147 * FIXME does it make sense here ? */
148 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
150 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
152 /* If an aspect-ratio was specified in the input format then force it */
153 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
155 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
156 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
160 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
161 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
163 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
165 p_dec->fmt_out.video.i_sar_num = 1;
166 p_dec->fmt_out.video.i_sar_den = 1;
170 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
171 p_dec->fmt_in.video.i_frame_rate_base > 0 )
173 p_dec->fmt_out.video.i_frame_rate =
174 p_dec->fmt_in.video.i_frame_rate;
175 p_dec->fmt_out.video.i_frame_rate_base =
176 p_dec->fmt_in.video.i_frame_rate_base;
178 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
180 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
181 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
184 return decoder_NewPicture( p_dec );
187 /*****************************************************************************
188 * InitVideo: initialize the video decoder
189 *****************************************************************************
190 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
191 * opened (done after the first decoded frame).
192 *****************************************************************************/
193 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
194 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
196 decoder_sys_t *p_sys;
199 /* Allocate the memory needed to store the decoder's structure */
200 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
203 p_codec->type = CODEC_TYPE_VIDEO;
204 p_context->codec_type = CODEC_TYPE_VIDEO;
205 p_context->codec_id = i_codec_id;
206 p_sys->p_context = p_context;
207 p_sys->p_codec = p_codec;
208 p_sys->i_codec_id = i_codec_id;
209 p_sys->psz_namecodec = psz_namecodec;
210 p_sys->p_ff_pic = avcodec_alloc_frame();
211 p_sys->b_delayed_open = true;
214 /* ***** Fill p_context with init values ***** */
215 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
217 /* ***** Get configuration of ffmpeg plugin ***** */
218 p_sys->p_context->workaround_bugs =
219 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
220 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 0, 0 )
221 p_sys->p_context->error_resilience =
222 config_GetInt( p_dec, "ffmpeg-error-resilience" );
224 p_sys->p_context->error_recognition =
225 config_GetInt( p_dec, "ffmpeg-error-resilience" );
228 if( var_CreateGetBool( p_dec, "grayscale" ) )
229 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
231 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
232 if( i_val ) p_sys->p_context->debug_mv = i_val;
234 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
235 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
237 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
238 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
239 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
240 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
241 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
243 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
244 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
246 /* ***** ffmpeg frame skipping ***** */
247 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
249 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
252 p_sys->p_context->skip_frame = AVDISCARD_NONE;
255 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
258 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
261 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
264 p_sys->p_context->skip_frame = AVDISCARD_ALL;
267 p_sys->p_context->skip_frame = AVDISCARD_NONE;
270 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
272 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
275 p_sys->p_context->skip_idct = AVDISCARD_NONE;
278 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
281 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
284 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
287 p_sys->p_context->skip_idct = AVDISCARD_ALL;
290 p_sys->p_context->skip_idct = AVDISCARD_NONE;
293 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
295 /* ***** ffmpeg direct rendering ***** */
296 p_sys->b_direct_rendering = false;
297 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
298 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
299 /* Apparently direct rendering doesn't work with YUV422P */
300 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
301 /* H264 uses too many reference frames */
302 p_sys->i_codec_id != CODEC_ID_H264 &&
303 /* No idea why ... but this fixes flickering on some TSCC streams */
304 p_sys->i_codec_id != CODEC_ID_TSCC &&
305 !p_sys->p_context->debug_mv )
307 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
308 * so we need to do another check in ffmpeg_GetFrameBuf() */
309 p_sys->b_direct_rendering = true;
312 /* ffmpeg doesn't properly release old pictures when frames are skipped */
313 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
314 if( p_sys->b_direct_rendering )
316 msg_Dbg( p_dec, "using direct rendering" );
317 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
320 /* Always use our get_buffer wrapper so we can calculate the
322 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
323 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
324 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
325 p_sys->p_context->opaque = p_dec;
327 #ifdef HAVE_AVCODEC_VA
328 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
329 p_sys->p_context->get_format = ffmpeg_GetFormat;
332 /* ***** misc init ***** */
333 p_sys->input_pts = p_sys->input_dts = 0;
335 p_sys->b_has_b_frames = false;
336 p_sys->b_first_frame = true;
337 p_sys->b_flush = false;
338 p_sys->i_late_frames = 0;
340 /* Set output properties */
341 p_dec->fmt_out.i_cat = VIDEO_ES;
342 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
344 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
345 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
347 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
350 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
351 if( p_dec->fmt_in.video.p_palette )
353 p_sys->palette.palette_changed = 1;
355 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
361 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
362 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
363 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
364 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
366 p_sys->palette.palette[i] = c.u;
368 p_sys->p_context->palctrl = &p_sys->palette;
370 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
371 if( p_dec->fmt_out.video.p_palette )
372 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
374 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
376 p_sys->p_context->palctrl = &p_sys->palette;
379 /* ***** init this codec with special data ***** */
380 ffmpeg_InitCodec( p_dec );
382 /* ***** Open the codec ***** */
383 if( ffmpeg_OpenCodec( p_dec ) < 0 )
385 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
386 av_free( p_sys->p_ff_pic );
394 /*****************************************************************************
395 * DecodeVideo: Called to decode one or more frames
396 *****************************************************************************/
397 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
399 decoder_sys_t *p_sys = p_dec->p_sys;
401 int b_null_size = false;
404 if( !pp_block || !*pp_block )
407 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
409 ffmpeg_InitCodec( p_dec );
410 if( p_sys->b_delayed_open )
412 if( ffmpeg_OpenCodec( p_dec ) )
413 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
418 if( p_sys->b_delayed_open )
420 block_Release( p_block );
424 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
426 p_sys->i_pts = 0; /* To make sure we recover properly */
428 p_sys->input_pts = p_sys->input_dts = 0;
429 p_sys->i_late_frames = 0;
431 block_Release( p_block );
433 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
434 //avcodec_flush_buffers( p_sys->p_context );
438 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
440 /* Do not care about late frames when prerolling
441 * TODO avoid decoding of non reference frame
442 * (ie all B except for H264 where it depends only on nal_ref_idc) */
443 p_sys->i_late_frames = 0;
446 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
447 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
451 msg_Err( p_dec, "more than 5 seconds of late video -> "
452 "dropping frame (computer too slow ?)" );
453 p_sys->i_pts = 0; /* To make sure we recover properly */
455 block_Release( p_block );
456 p_sys->i_late_frames--;
460 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
462 p_sys->input_pts = p_block->i_pts;
463 p_sys->input_dts = p_block->i_dts;
465 /* Make sure we don't reuse the same timestamps twice */
466 p_block->i_pts = p_block->i_dts = 0;
469 /* A good idea could be to decode all I pictures and see for the other */
470 if( !p_dec->b_pace_control &&
472 (p_sys->i_late_frames > 4) )
475 if( p_sys->i_late_frames < 12 )
477 p_sys->p_context->skip_frame =
478 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
479 AVDISCARD_BIDIR : p_sys->i_skip_frame;
483 /* picture too late, won't decode
484 * but break picture until a new I, and for mpeg4 ...*/
485 p_sys->i_late_frames--; /* needed else it will never be decrease */
486 block_Release( p_block );
492 if( p_sys->b_hurry_up )
493 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
494 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
500 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
502 if( p_sys->b_hurry_up )
503 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
506 else if( !b_drawpicture )
508 /* It creates broken picture
509 * FIXME either our parser or ffmpeg is broken */
511 if( p_sys->b_hurry_up )
512 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
518 * Do the actual decoding now
521 /* Don't forget that ffmpeg requires a little more bytes
522 * that the real frame size */
523 if( p_block->i_buffer > 0 )
525 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
527 p_block = block_Realloc( p_block, 0,
528 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
531 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
533 memset( p_block->p_buffer + p_block->i_buffer, 0,
534 FF_INPUT_BUFFER_PADDING_SIZE );
537 while( p_block->i_buffer > 0 || p_sys->b_flush )
539 int i_used, b_gotpicture;
542 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
544 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
546 if( b_null_size && p_sys->p_context->width > 0 &&
547 p_sys->p_context->height > 0 &&
550 /* Reparse it to not drop the I frame */
552 if( p_sys->b_hurry_up )
553 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
554 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
555 &b_gotpicture, p_block->p_buffer,
560 p_sys->b_first_frame = true;
562 if( p_block->i_buffer <= 0 )
563 p_sys->b_flush = false;
568 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
570 block_Release( p_block );
573 else if( i_used > p_block->i_buffer )
575 i_used = p_block->i_buffer;
579 p_block->i_buffer -= i_used;
580 p_block->p_buffer += i_used;
582 /* Nothing to display */
585 if( i_used == 0 ) break;
590 if( p_sys->p_ff_pic->pts )
591 p_sys->i_pts = p_sys->p_ff_pic->pts;
593 /* Update frame late count (except when doing preroll) */
594 mtime_t i_display_date = 0;
595 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
596 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
598 if( i_display_date > 0 && i_display_date <= mdate() )
600 p_sys->i_late_frames++;
601 if( p_sys->i_late_frames == 1 )
602 p_sys->i_late_frames_start = mdate();
606 p_sys->i_late_frames = 0;
609 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
611 /* Do not display the picture */
612 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
613 if( !b_drawpicture && p_pic )
614 decoder_DeletePicture( p_dec, p_pic );
616 ffmpeg_NextPts( p_dec );
620 if( !p_sys->p_ff_pic->opaque )
622 /* Get a new picture */
623 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
626 block_Release( p_block );
630 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
632 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
636 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
639 /* Sanity check (seems to be needed for some streams) */
640 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
642 p_sys->b_has_b_frames = true;
645 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
647 /* Fetch again the aspect ratio in case it changed */
648 p_dec->fmt_out.video.i_sar_num
649 = p_sys->p_context->sample_aspect_ratio.num;
650 p_dec->fmt_out.video.i_sar_den
651 = p_sys->p_context->sample_aspect_ratio.den;
653 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
655 p_dec->fmt_out.video.i_sar_num = 1;
656 p_dec->fmt_out.video.i_sar_den = 1;
660 /* Send decoded frame to vout */
663 p_pic->date = p_sys->i_pts;
665 ffmpeg_NextPts( p_dec );
667 if( p_sys->b_first_frame )
669 /* Hack to force display of still pictures */
670 p_sys->b_first_frame = false;
671 p_pic->b_force = true;
674 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
675 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
676 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
678 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
679 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
680 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
681 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
682 p_pic->i_qstride * i_mb_h );
683 switch( p_sys->p_ff_pic->qscale_type )
685 case FF_QSCALE_TYPE_MPEG1:
686 p_pic->i_qtype = QTYPE_MPEG1;
688 case FF_QSCALE_TYPE_MPEG2:
689 p_pic->i_qtype = QTYPE_MPEG2;
691 case FF_QSCALE_TYPE_H264:
692 p_pic->i_qtype = QTYPE_H264;
700 decoder_DeletePicture( p_dec, p_pic );
704 block_Release( p_block );
708 /*****************************************************************************
709 * EndVideo: decoder destruction
710 *****************************************************************************
711 * This function is called when the thread ends after a successful
713 *****************************************************************************/
714 void EndVideoDec( decoder_t *p_dec )
716 decoder_sys_t *p_sys = p_dec->p_sys;
718 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
719 if( p_sys->p_context->codec )
720 avcodec_flush_buffers( p_sys->p_context );
722 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
725 vlc_va_Delete( p_sys->p_va );
728 /*****************************************************************************
729 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
730 *****************************************************************************/
731 static void ffmpeg_InitCodec( decoder_t *p_dec )
733 decoder_sys_t *p_sys = p_dec->p_sys;
734 int i_size = p_dec->fmt_in.i_extra;
736 if( !i_size ) return;
738 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
742 p_sys->p_context->extradata_size = i_size + 12;
743 p = p_sys->p_context->extradata =
744 malloc( p_sys->p_context->extradata_size );
748 memcpy( &p[0], "SVQ3", 4 );
749 memset( &p[4], 0, 8 );
750 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
752 /* Now remove all atoms before the SMI one */
753 if( p_sys->p_context->extradata_size > 0x5a &&
754 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
756 uint8_t *psz = &p[0x52];
758 while( psz < &p[p_sys->p_context->extradata_size - 8] )
760 int i_size = GetDWBE( psz );
763 /* FIXME handle 1 as long size */
766 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
768 memmove( &p[0x52], psz,
769 &p[p_sys->p_context->extradata_size] - psz );
779 p_sys->p_context->extradata_size = i_size;
780 p_sys->p_context->extradata =
781 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
782 if( p_sys->p_context->extradata )
784 memcpy( p_sys->p_context->extradata,
785 p_dec->fmt_in.p_extra, i_size );
786 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
787 0, FF_INPUT_BUFFER_PADDING_SIZE );
792 /*****************************************************************************
794 *****************************************************************************/
795 static int ffmpeg_OpenCodec( decoder_t *p_dec )
797 decoder_sys_t *p_sys = p_dec->p_sys;
799 if( p_sys->p_context->extradata_size <= 0 )
801 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
802 p_sys->i_codec_id == CODEC_ID_VORBIS ||
803 p_sys->i_codec_id == CODEC_ID_THEORA )
805 msg_Warn( p_dec, "waiting for extra data for codec %s",
806 p_sys->psz_namecodec );
810 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
811 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
812 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
813 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
815 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
820 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
821 vlc_avcodec_unlock();
824 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
826 p_sys->b_delayed_open = false;
828 if( p_sys->p_va && p_sys->p_va->description )
829 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
833 /*****************************************************************************
834 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
835 * picture_t structure (when not in direct rendering mode).
836 *****************************************************************************/
837 static void ffmpeg_CopyPicture( decoder_t *p_dec,
838 picture_t *p_pic, AVFrame *p_ff_pic )
840 decoder_sys_t *p_sys = p_dec->p_sys;
844 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
846 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
848 int i_plane, i_size, i_line;
849 uint8_t *p_dst, *p_src;
850 int i_src_stride, i_dst_stride;
852 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
854 p_src = p_ff_pic->data[i_plane];
855 p_dst = p_pic->p[i_plane].p_pixels;
856 i_src_stride = p_ff_pic->linesize[i_plane];
857 i_dst_stride = p_pic->p[i_plane].i_pitch;
859 i_size = __MIN( i_src_stride, i_dst_stride );
860 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
863 vlc_memcpy( p_dst, p_src, i_size );
864 p_src += i_src_stride;
865 p_dst += i_dst_stride;
871 msg_Err( p_dec, "don't know how to convert chroma %i",
872 p_sys->p_context->pix_fmt );
877 /*****************************************************************************
878 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
879 *****************************************************************************
880 * It is used for direct rendering as well as to get the right PTS for each
881 * decoded picture (even in indirect rendering mode).
882 *****************************************************************************/
883 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
885 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
888 decoder_t *p_dec = (decoder_t *)p_context->opaque;
889 decoder_sys_t *p_sys = p_dec->p_sys;
892 /* Set picture PTS */
893 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
896 p_ff_pic->opaque = NULL;
900 #ifdef HAVE_AVCODEC_VA
901 /* hwaccel_context is not present in old fffmpeg version */
902 if( vlc_va_Setup( p_sys->p_va,
903 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
904 p_sys->p_context->width, p_sys->p_context->height ) )
906 msg_Err( p_dec, "vlc_va_Setup failed" );
914 p_ff_pic->type = FF_BUFFER_TYPE_USER;
915 /* FIXME what is that, should give good value */
916 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
918 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
920 msg_Err( p_dec, "VaGrabSurface failed" );
925 else if( !p_sys->b_direct_rendering )
927 /* Not much to do in indirect rendering mode */
928 return avcodec_default_get_buffer( p_context, p_ff_pic );
931 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
932 * so we need to check for direct rendering again. */
934 int i_width = p_sys->p_context->width;
935 int i_height = p_sys->p_context->height;
936 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
938 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
939 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 ||
940 /* We only pad picture up to 16 */
941 PAD(p_sys->p_context->width,16) < i_width || PAD(p_sys->p_context->height,16) < i_height ||
942 p_context->pix_fmt == PIX_FMT_PAL8 )
943 return avcodec_default_get_buffer( p_context, p_ff_pic );
945 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
947 /* Get a new picture */
948 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
950 return avcodec_default_get_buffer( p_context, p_ff_pic );
952 p_sys->p_context->draw_horiz_band = NULL;
954 p_ff_pic->opaque = (void*)p_pic;
955 p_ff_pic->type = FF_BUFFER_TYPE_USER;
956 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
957 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
958 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
959 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
961 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
962 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
963 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
964 p_ff_pic->linesize[3] = 0;
966 decoder_LinkPicture( p_dec, p_pic );
968 /* FIXME what is that, should give good value */
969 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
973 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
975 decoder_t *p_dec = (decoder_t *)p_context->opaque;
979 p_ff_pic->pts = AV_NOPTS_VALUE;
981 /* We always use default reget function, it works perfectly fine */
982 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
984 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
985 * ffmpeg_GetFrameBuf call) */
986 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
987 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
992 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
994 decoder_sys_t *p_sys = p_dec->p_sys;
996 /* Set picture PTS */
997 if( p_sys->input_pts )
999 p_ff_pic->pts = p_sys->input_pts;
1001 else if( p_sys->input_dts )
1003 /* Some demuxers only set the dts so let's try to find a useful
1004 * timestamp from this */
1005 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1006 !p_ff_pic->reference || !p_sys->i_pts )
1008 p_ff_pic->pts = p_sys->input_dts;
1020 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1022 p_sys->input_pts = p_sys->input_dts = 0;
1026 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1029 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1030 decoder_sys_t *p_sys = p_dec->p_sys;
1034 vlc_va_Release( p_sys->p_va, p_ff_pic );
1037 for( int i = 0; i < 4; i++ )
1038 p_ff_pic->data[i] = NULL;
1040 else if( !p_ff_pic->opaque )
1042 avcodec_default_release_buffer( p_context, p_ff_pic );
1046 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1048 decoder_UnlinkPicture( p_dec, p_pic );
1051 for( int i = 0; i < 4; i++ )
1052 p_ff_pic->data[i] = NULL;
1056 static void ffmpeg_NextPts( decoder_t *p_dec )
1058 decoder_sys_t *p_sys = p_dec->p_sys;
1060 if( p_sys->i_pts <= 0 )
1063 /* interpolate the next PTS */
1064 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1065 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1067 p_sys->i_pts += INT64_C(1000000) *
1068 (2 + p_sys->p_ff_pic->repeat_pict) *
1069 p_dec->fmt_in.video.i_frame_rate_base /
1070 (2 * p_dec->fmt_in.video.i_frame_rate);
1072 else if( p_sys->p_context->time_base.den > 0 )
1074 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1075 int i_tick = p_sys->p_context->ticks_per_frame;
1082 p_sys->i_pts += INT64_C(1000000) *
1083 (2 + p_sys->p_ff_pic->repeat_pict) *
1084 i_tick * p_sys->p_context->time_base.num /
1085 (2 * p_sys->p_context->time_base.den);
1089 #ifdef HAVE_AVCODEC_VA
1090 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1091 const enum PixelFormat *pi_fmt )
1093 decoder_t *p_dec = p_codec->opaque;
1094 decoder_sys_t *p_sys = p_dec->p_sys;
1098 vlc_va_Delete( p_sys->p_va );
1102 /* Try too look for a supported hw acceleration */
1103 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1105 static const char *ppsz_name[PIX_FMT_NB] = {
1106 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1107 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1108 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1109 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1110 #ifdef HAVE_AVCODEC_DXVA2
1111 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1113 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1114 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1116 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1118 /* Only VLD supported */
1119 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1121 #ifdef HAVE_AVCODEC_VAAPI
1122 msg_Dbg( p_dec, "Trying VA API" );
1123 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1125 msg_Warn( p_dec, "Failed to open VA API" );
1130 #ifdef HAVE_AVCODEC_DXVA2
1131 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1133 msg_Dbg( p_dec, "Trying DXVA2" );
1134 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1136 msg_Warn( p_dec, "Failed to open DXVA2" );
1141 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1143 /* We try to call vlc_va_Setup when possible to detect errors when
1144 * possible (later is too late) */
1145 if( vlc_va_Setup( p_sys->p_va,
1146 &p_sys->p_context->hwaccel_context,
1147 &p_dec->fmt_out.video.i_chroma,
1148 p_sys->p_context->width, p_sys->p_context->height ) )
1150 msg_Err( p_dec, "vlc_va_Setup failed" );
1151 vlc_va_Delete( p_sys->p_va );
1158 /* FIXME this will disabled direct rendering
1159 * even if a new pixel format is renegociated
1161 p_sys->b_direct_rendering = false;
1162 p_sys->p_context->draw_horiz_band = NULL;
1167 /* Fallback to default behaviour */
1168 return avcodec_default_get_format( p_codec, pi_fmt );