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;
84 int i_direct_rendering_used;
88 /* Hack to force display of still pictures */
92 AVPaletteControl palette;
101 /* FIXME (dummy palette for now) */
102 static const AVPaletteControl palette_control;
104 /*****************************************************************************
106 *****************************************************************************/
107 static void ffmpeg_InitCodec ( decoder_t * );
108 static int ffmpeg_OpenCodec ( decoder_t * );
109 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
110 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
111 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
112 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
113 static void ffmpeg_NextPts( decoder_t * );
115 #ifdef HAVE_AVCODEC_VA
116 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
117 const enum PixelFormat * );
120 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
122 uint8_t *p = (uint8_t*)&fcc;
123 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
126 /*****************************************************************************
128 *****************************************************************************/
130 /* Returns a new picture buffer */
131 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
132 AVCodecContext *p_context )
134 decoder_sys_t *p_sys = p_dec->p_sys;
136 p_dec->fmt_out.video.i_width = p_context->width;
137 p_dec->fmt_out.video.i_height = p_context->height;
139 if( !p_context->width || !p_context->height )
141 return NULL; /* invalid display size */
144 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
146 /* we are doomed, but not really, because most codecs set their pix_fmt
148 * FIXME does it make sense here ? */
149 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
151 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
153 /* If an aspect-ratio was specified in the input format then force it */
154 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
156 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
157 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
161 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
162 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
164 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
166 p_dec->fmt_out.video.i_sar_num = 1;
167 p_dec->fmt_out.video.i_sar_den = 1;
171 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
172 p_dec->fmt_in.video.i_frame_rate_base > 0 )
174 p_dec->fmt_out.video.i_frame_rate =
175 p_dec->fmt_in.video.i_frame_rate;
176 p_dec->fmt_out.video.i_frame_rate_base =
177 p_dec->fmt_in.video.i_frame_rate_base;
179 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
181 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
182 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
185 return decoder_NewPicture( p_dec );
188 /*****************************************************************************
189 * InitVideo: initialize the video decoder
190 *****************************************************************************
191 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
192 * opened (done after the first decoded frame).
193 *****************************************************************************/
194 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
195 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
197 decoder_sys_t *p_sys;
200 /* Allocate the memory needed to store the decoder's structure */
201 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
204 p_codec->type = CODEC_TYPE_VIDEO;
205 p_context->codec_type = CODEC_TYPE_VIDEO;
206 p_context->codec_id = i_codec_id;
207 p_sys->p_context = p_context;
208 p_sys->p_codec = p_codec;
209 p_sys->i_codec_id = i_codec_id;
210 p_sys->psz_namecodec = psz_namecodec;
211 p_sys->p_ff_pic = avcodec_alloc_frame();
212 p_sys->b_delayed_open = true;
215 /* ***** Fill p_context with init values ***** */
216 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
218 /* ***** Get configuration of ffmpeg plugin ***** */
219 p_sys->p_context->workaround_bugs =
220 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
221 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 0, 0 )
222 p_sys->p_context->error_resilience =
223 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
225 p_sys->p_context->error_recognition =
226 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
229 if( var_CreateGetBool( p_dec, "grayscale" ) )
230 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
232 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
233 if( i_val ) p_sys->p_context->debug_mv = i_val;
235 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
236 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
238 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
239 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
240 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
241 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
242 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
244 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
245 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
247 /* ***** ffmpeg frame skipping ***** */
248 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
250 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
253 p_sys->p_context->skip_frame = AVDISCARD_NONE;
256 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
259 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
262 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
265 p_sys->p_context->skip_frame = AVDISCARD_ALL;
268 p_sys->p_context->skip_frame = AVDISCARD_NONE;
271 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
273 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
276 p_sys->p_context->skip_idct = AVDISCARD_NONE;
279 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
282 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
285 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
288 p_sys->p_context->skip_idct = AVDISCARD_ALL;
291 p_sys->p_context->skip_idct = AVDISCARD_NONE;
294 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
296 /* ***** ffmpeg direct rendering ***** */
297 p_sys->b_direct_rendering = false;
298 p_sys->i_direct_rendering_used = -1;
299 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
300 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
301 /* Apparently direct rendering doesn't work with YUV422P */
302 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
303 /* H264 uses too many reference frames */
304 p_sys->i_codec_id != CODEC_ID_H264 &&
305 /* No idea why ... but this fixes flickering on some TSCC streams */
306 p_sys->i_codec_id != CODEC_ID_TSCC &&
307 !p_sys->p_context->debug_mv )
309 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
310 * so we need to do another check in ffmpeg_GetFrameBuf() */
311 p_sys->b_direct_rendering = true;
314 /* ffmpeg doesn't properly release old pictures when frames are skipped */
315 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
316 if( p_sys->b_direct_rendering )
318 msg_Dbg( p_dec, "trying to use direct rendering" );
319 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
323 msg_Dbg( p_dec, "direct rendering is disabled" );
326 /* Always use our get_buffer wrapper so we can calculate the
328 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
329 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
330 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
331 p_sys->p_context->opaque = p_dec;
333 #ifdef HAVE_AVCODEC_VA
334 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
335 p_sys->p_context->get_format = ffmpeg_GetFormat;
338 /* ***** misc init ***** */
339 p_sys->input_pts = p_sys->input_dts = 0;
341 p_sys->b_has_b_frames = false;
342 p_sys->b_first_frame = true;
343 p_sys->b_flush = false;
344 p_sys->i_late_frames = 0;
346 /* Set output properties */
347 p_dec->fmt_out.i_cat = VIDEO_ES;
348 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
350 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
351 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
353 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
356 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
357 if( p_dec->fmt_in.video.p_palette )
359 p_sys->palette.palette_changed = 1;
361 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
367 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
368 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
369 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
370 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
372 p_sys->palette.palette[i] = c.u;
374 p_sys->p_context->palctrl = &p_sys->palette;
376 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
377 if( p_dec->fmt_out.video.p_palette )
378 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
380 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
382 p_sys->p_context->palctrl = &p_sys->palette;
385 /* ***** init this codec with special data ***** */
386 ffmpeg_InitCodec( p_dec );
388 /* ***** Open the codec ***** */
389 if( ffmpeg_OpenCodec( p_dec ) < 0 )
391 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
392 av_free( p_sys->p_ff_pic );
400 /*****************************************************************************
401 * DecodeVideo: Called to decode one or more frames
402 *****************************************************************************/
403 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
405 decoder_sys_t *p_sys = p_dec->p_sys;
407 int b_null_size = false;
410 if( !pp_block || !*pp_block )
413 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
415 ffmpeg_InitCodec( p_dec );
416 if( p_sys->b_delayed_open )
418 if( ffmpeg_OpenCodec( p_dec ) )
419 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
424 if( p_sys->b_delayed_open )
426 block_Release( p_block );
430 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
432 p_sys->i_pts = 0; /* To make sure we recover properly */
434 p_sys->input_pts = p_sys->input_dts = 0;
435 p_sys->i_late_frames = 0;
437 block_Release( p_block );
439 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
440 //avcodec_flush_buffers( p_sys->p_context );
444 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
446 /* Do not care about late frames when prerolling
447 * TODO avoid decoding of non reference frame
448 * (ie all B except for H264 where it depends only on nal_ref_idc) */
449 p_sys->i_late_frames = 0;
452 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
453 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
457 msg_Err( p_dec, "more than 5 seconds of late video -> "
458 "dropping frame (computer too slow ?)" );
459 p_sys->i_pts = 0; /* To make sure we recover properly */
461 block_Release( p_block );
462 p_sys->i_late_frames--;
466 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
468 p_sys->input_pts = p_block->i_pts;
469 p_sys->input_dts = p_block->i_dts;
471 /* Make sure we don't reuse the same timestamps twice */
472 p_block->i_pts = p_block->i_dts = 0;
475 /* A good idea could be to decode all I pictures and see for the other */
476 if( !p_dec->b_pace_control &&
478 (p_sys->i_late_frames > 4) )
481 if( p_sys->i_late_frames < 12 )
483 p_sys->p_context->skip_frame =
484 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
485 AVDISCARD_BIDIR : p_sys->i_skip_frame;
489 /* picture too late, won't decode
490 * but break picture until a new I, and for mpeg4 ...*/
491 p_sys->i_late_frames--; /* needed else it will never be decrease */
492 block_Release( p_block );
498 if( p_sys->b_hurry_up )
499 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
500 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
506 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
508 if( p_sys->b_hurry_up )
509 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
512 else if( !b_drawpicture )
514 /* It creates broken picture
515 * FIXME either our parser or ffmpeg is broken */
517 if( p_sys->b_hurry_up )
518 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
524 * Do the actual decoding now
527 /* Don't forget that ffmpeg requires a little more bytes
528 * that the real frame size */
529 if( p_block->i_buffer > 0 )
531 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
533 p_block = block_Realloc( p_block, 0,
534 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
537 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
539 memset( p_block->p_buffer + p_block->i_buffer, 0,
540 FF_INPUT_BUFFER_PADDING_SIZE );
543 while( p_block->i_buffer > 0 || p_sys->b_flush )
545 int i_used, b_gotpicture;
548 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
550 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
552 if( b_null_size && p_sys->p_context->width > 0 &&
553 p_sys->p_context->height > 0 &&
556 /* Reparse it to not drop the I frame */
558 if( p_sys->b_hurry_up )
559 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
560 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
561 &b_gotpicture, p_block->p_buffer,
566 p_sys->b_first_frame = true;
568 if( p_block->i_buffer <= 0 )
569 p_sys->b_flush = false;
574 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
576 block_Release( p_block );
579 else if( i_used > p_block->i_buffer )
581 i_used = p_block->i_buffer;
585 p_block->i_buffer -= i_used;
586 p_block->p_buffer += i_used;
588 /* Nothing to display */
591 if( i_used == 0 ) break;
596 if( p_sys->p_ff_pic->pts )
597 p_sys->i_pts = p_sys->p_ff_pic->pts;
599 /* Update frame late count (except when doing preroll) */
600 mtime_t i_display_date = 0;
601 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
602 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
604 if( i_display_date > 0 && i_display_date <= mdate() )
606 p_sys->i_late_frames++;
607 if( p_sys->i_late_frames == 1 )
608 p_sys->i_late_frames_start = mdate();
612 p_sys->i_late_frames = 0;
615 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
617 /* Do not display the picture */
618 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
619 if( !b_drawpicture && p_pic )
620 decoder_DeletePicture( p_dec, p_pic );
622 ffmpeg_NextPts( p_dec );
626 if( !p_sys->p_ff_pic->opaque )
628 /* Get a new picture */
629 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
632 block_Release( p_block );
636 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
638 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
642 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
645 /* Sanity check (seems to be needed for some streams) */
646 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
648 p_sys->b_has_b_frames = true;
651 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
653 /* Fetch again the aspect ratio in case it changed */
654 p_dec->fmt_out.video.i_sar_num
655 = p_sys->p_context->sample_aspect_ratio.num;
656 p_dec->fmt_out.video.i_sar_den
657 = p_sys->p_context->sample_aspect_ratio.den;
659 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
661 p_dec->fmt_out.video.i_sar_num = 1;
662 p_dec->fmt_out.video.i_sar_den = 1;
666 /* Send decoded frame to vout */
669 p_pic->date = p_sys->i_pts;
671 ffmpeg_NextPts( p_dec );
673 if( p_sys->b_first_frame )
675 /* Hack to force display of still pictures */
676 p_sys->b_first_frame = false;
677 p_pic->b_force = true;
680 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
681 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
682 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
684 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
685 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
686 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
687 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
688 p_pic->i_qstride * i_mb_h );
689 switch( p_sys->p_ff_pic->qscale_type )
691 case FF_QSCALE_TYPE_MPEG1:
692 p_pic->i_qtype = QTYPE_MPEG1;
694 case FF_QSCALE_TYPE_MPEG2:
695 p_pic->i_qtype = QTYPE_MPEG2;
697 case FF_QSCALE_TYPE_H264:
698 p_pic->i_qtype = QTYPE_H264;
706 decoder_DeletePicture( p_dec, p_pic );
710 block_Release( p_block );
714 /*****************************************************************************
715 * EndVideo: decoder destruction
716 *****************************************************************************
717 * This function is called when the thread ends after a successful
719 *****************************************************************************/
720 void EndVideoDec( decoder_t *p_dec )
722 decoder_sys_t *p_sys = p_dec->p_sys;
724 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
725 if( p_sys->p_context->codec )
726 avcodec_flush_buffers( p_sys->p_context );
728 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
731 vlc_va_Delete( p_sys->p_va );
734 /*****************************************************************************
735 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
736 *****************************************************************************/
737 static void ffmpeg_InitCodec( decoder_t *p_dec )
739 decoder_sys_t *p_sys = p_dec->p_sys;
740 int i_size = p_dec->fmt_in.i_extra;
742 if( !i_size ) return;
744 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
748 p_sys->p_context->extradata_size = i_size + 12;
749 p = p_sys->p_context->extradata =
750 malloc( p_sys->p_context->extradata_size );
754 memcpy( &p[0], "SVQ3", 4 );
755 memset( &p[4], 0, 8 );
756 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
758 /* Now remove all atoms before the SMI one */
759 if( p_sys->p_context->extradata_size > 0x5a &&
760 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
762 uint8_t *psz = &p[0x52];
764 while( psz < &p[p_sys->p_context->extradata_size - 8] )
766 int i_size = GetDWBE( psz );
769 /* FIXME handle 1 as long size */
772 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
774 memmove( &p[0x52], psz,
775 &p[p_sys->p_context->extradata_size] - psz );
785 p_sys->p_context->extradata_size = i_size;
786 p_sys->p_context->extradata =
787 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
788 if( p_sys->p_context->extradata )
790 memcpy( p_sys->p_context->extradata,
791 p_dec->fmt_in.p_extra, i_size );
792 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
793 0, FF_INPUT_BUFFER_PADDING_SIZE );
798 /*****************************************************************************
800 *****************************************************************************/
801 static int ffmpeg_OpenCodec( decoder_t *p_dec )
803 decoder_sys_t *p_sys = p_dec->p_sys;
805 if( p_sys->p_context->extradata_size <= 0 )
807 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
808 p_sys->i_codec_id == CODEC_ID_VORBIS ||
809 p_sys->i_codec_id == CODEC_ID_THEORA )
811 msg_Warn( p_dec, "waiting for extra data for codec %s",
812 p_sys->psz_namecodec );
816 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
817 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
818 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
819 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
821 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
826 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
827 vlc_avcodec_unlock();
830 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
832 p_sys->b_delayed_open = false;
836 /*****************************************************************************
837 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
838 * picture_t structure (when not in direct rendering mode).
839 *****************************************************************************/
840 static void ffmpeg_CopyPicture( decoder_t *p_dec,
841 picture_t *p_pic, AVFrame *p_ff_pic )
843 decoder_sys_t *p_sys = p_dec->p_sys;
847 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
849 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
851 int i_plane, i_size, i_line;
852 uint8_t *p_dst, *p_src;
853 int i_src_stride, i_dst_stride;
855 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
857 p_src = p_ff_pic->data[i_plane];
858 p_dst = p_pic->p[i_plane].p_pixels;
859 i_src_stride = p_ff_pic->linesize[i_plane];
860 i_dst_stride = p_pic->p[i_plane].i_pitch;
862 i_size = __MIN( i_src_stride, i_dst_stride );
863 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
866 vlc_memcpy( p_dst, p_src, i_size );
867 p_src += i_src_stride;
868 p_dst += i_dst_stride;
874 msg_Err( p_dec, "don't know how to convert chroma %i",
875 p_sys->p_context->pix_fmt );
880 /*****************************************************************************
881 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
882 *****************************************************************************
883 * It is used for direct rendering as well as to get the right PTS for each
884 * decoded picture (even in indirect rendering mode).
885 *****************************************************************************/
886 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
888 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
891 decoder_t *p_dec = (decoder_t *)p_context->opaque;
892 decoder_sys_t *p_sys = p_dec->p_sys;
895 /* Set picture PTS */
896 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
899 p_ff_pic->opaque = NULL;
903 #ifdef HAVE_AVCODEC_VA
904 /* hwaccel_context is not present in old fffmpeg version */
905 if( vlc_va_Setup( p_sys->p_va,
906 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
907 p_sys->p_context->width, p_sys->p_context->height ) )
909 msg_Err( p_dec, "vlc_va_Setup failed" );
917 p_ff_pic->type = FF_BUFFER_TYPE_USER;
918 /* FIXME what is that, should give good value */
919 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
921 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
923 msg_Err( p_dec, "VaGrabSurface failed" );
928 else if( !p_sys->b_direct_rendering )
930 /* Not much to do in indirect rendering mode */
931 return avcodec_default_get_buffer( p_context, p_ff_pic );
934 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
935 * so we need to check for direct rendering again. */
937 int i_width = p_sys->p_context->width;
938 int i_height = p_sys->p_context->height;
939 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
941 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
942 p_context->pix_fmt == PIX_FMT_PAL8 )
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 );
951 bool b_compatible = true;
952 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
953 p_pic->p[0].i_lines < i_height )
954 b_compatible = false;
955 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
958 switch( p_sys->i_codec_id )
968 i_align = i == 0 ? 16 : 8;
971 if( p_pic->p[i].i_pitch % i_align )
972 b_compatible = false;
973 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
974 b_compatible = false;
978 decoder_DeletePicture( p_dec, p_pic );
982 if( p_sys->i_direct_rendering_used != 1 )
984 msg_Dbg( p_dec, "using direct rendering" );
985 p_sys->i_direct_rendering_used = 1;
988 p_sys->p_context->draw_horiz_band = NULL;
990 p_ff_pic->opaque = (void*)p_pic;
991 p_ff_pic->type = FF_BUFFER_TYPE_USER;
992 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
993 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
994 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
995 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
997 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
998 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
999 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1000 p_ff_pic->linesize[3] = 0;
1002 decoder_LinkPicture( p_dec, p_pic );
1004 /* FIXME what is that, should give good value */
1005 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1010 if( p_sys->i_direct_rendering_used != 0 )
1012 msg_Warn( p_dec, "disabling direct rendering" );
1013 p_sys->i_direct_rendering_used = 0;
1015 return avcodec_default_get_buffer( p_context, p_ff_pic );
1017 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1019 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1023 p_ff_pic->pts = AV_NOPTS_VALUE;
1025 /* We always use default reget function, it works perfectly fine */
1026 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
1028 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
1029 * ffmpeg_GetFrameBuf call) */
1030 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
1031 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
1036 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
1038 decoder_sys_t *p_sys = p_dec->p_sys;
1040 /* Set picture PTS */
1041 if( p_sys->input_pts )
1043 p_ff_pic->pts = p_sys->input_pts;
1045 else if( p_sys->input_dts )
1047 /* Some demuxers only set the dts so let's try to find a useful
1048 * timestamp from this */
1049 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1050 !p_ff_pic->reference || !p_sys->i_pts )
1052 p_ff_pic->pts = p_sys->input_dts;
1064 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1066 p_sys->input_pts = p_sys->input_dts = 0;
1070 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1073 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1074 decoder_sys_t *p_sys = p_dec->p_sys;
1078 vlc_va_Release( p_sys->p_va, p_ff_pic );
1081 for( int i = 0; i < 4; i++ )
1082 p_ff_pic->data[i] = NULL;
1084 else if( !p_ff_pic->opaque )
1086 avcodec_default_release_buffer( p_context, p_ff_pic );
1090 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1092 decoder_UnlinkPicture( p_dec, p_pic );
1095 for( int i = 0; i < 4; i++ )
1096 p_ff_pic->data[i] = NULL;
1100 static void ffmpeg_NextPts( decoder_t *p_dec )
1102 decoder_sys_t *p_sys = p_dec->p_sys;
1104 if( p_sys->i_pts <= 0 )
1107 /* interpolate the next PTS */
1108 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1109 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1111 p_sys->i_pts += INT64_C(1000000) *
1112 (2 + p_sys->p_ff_pic->repeat_pict) *
1113 p_dec->fmt_in.video.i_frame_rate_base /
1114 (2 * p_dec->fmt_in.video.i_frame_rate);
1116 else if( p_sys->p_context->time_base.den > 0 )
1118 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1119 int i_tick = p_sys->p_context->ticks_per_frame;
1126 p_sys->i_pts += INT64_C(1000000) *
1127 (2 + p_sys->p_ff_pic->repeat_pict) *
1128 i_tick * p_sys->p_context->time_base.num /
1129 (2 * p_sys->p_context->time_base.den);
1133 #ifdef HAVE_AVCODEC_VA
1134 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1135 const enum PixelFormat *pi_fmt )
1137 decoder_t *p_dec = p_codec->opaque;
1138 decoder_sys_t *p_sys = p_dec->p_sys;
1142 vlc_va_Delete( p_sys->p_va );
1146 /* Try too look for a supported hw acceleration */
1147 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1149 static const char *ppsz_name[PIX_FMT_NB] = {
1150 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1151 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1152 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1153 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1154 #ifdef HAVE_AVCODEC_DXVA2
1155 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1157 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1158 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1160 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1162 /* Only VLD supported */
1163 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1165 #ifdef HAVE_AVCODEC_VAAPI
1166 msg_Dbg( p_dec, "Trying VA API" );
1167 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1169 msg_Warn( p_dec, "Failed to open VA API" );
1174 #ifdef HAVE_AVCODEC_DXVA2
1175 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1177 msg_Dbg( p_dec, "Trying DXVA2" );
1178 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1180 msg_Warn( p_dec, "Failed to open DXVA2" );
1185 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1187 /* We try to call vlc_va_Setup when possible to detect errors when
1188 * possible (later is too late) */
1189 if( vlc_va_Setup( p_sys->p_va,
1190 &p_sys->p_context->hwaccel_context,
1191 &p_dec->fmt_out.video.i_chroma,
1192 p_sys->p_context->width, p_sys->p_context->height ) )
1194 msg_Err( p_dec, "vlc_va_Setup failed" );
1195 vlc_va_Delete( p_sys->p_va );
1202 if( p_sys->p_va->description )
1203 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1205 /* FIXME this will disabled direct rendering
1206 * even if a new pixel format is renegociated
1208 p_sys->b_direct_rendering = false;
1209 p_sys->p_context->draw_horiz_band = NULL;
1214 /* Fallback to default behaviour */
1215 return avcodec_default_get_format( p_codec, pi_fmt );