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 /* No idea why ... but this fixes flickering on some TSCC streams */
302 p_sys->i_codec_id != CODEC_ID_TSCC &&
303 !p_sys->p_context->debug_mv )
305 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
306 * so we need to do another check in ffmpeg_GetFrameBuf() */
307 p_sys->b_direct_rendering = true;
310 /* ffmpeg doesn't properly release old pictures when frames are skipped */
311 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
312 if( p_sys->b_direct_rendering )
314 msg_Dbg( p_dec, "trying to use direct rendering" );
315 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
319 msg_Dbg( p_dec, "direct rendering is disabled" );
322 /* Always use our get_buffer wrapper so we can calculate the
324 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
325 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
326 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
327 p_sys->p_context->opaque = p_dec;
329 #ifdef HAVE_AVCODEC_VA
330 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
331 p_sys->p_context->get_format = ffmpeg_GetFormat;
334 /* ***** misc init ***** */
335 p_sys->input_pts = p_sys->input_dts = 0;
337 p_sys->b_has_b_frames = false;
338 p_sys->b_first_frame = true;
339 p_sys->b_flush = false;
340 p_sys->i_late_frames = 0;
342 /* Set output properties */
343 p_dec->fmt_out.i_cat = VIDEO_ES;
344 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
346 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
347 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
349 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
352 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
353 if( p_dec->fmt_in.video.p_palette )
355 p_sys->palette.palette_changed = 1;
357 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
363 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
364 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
365 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
366 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
368 p_sys->palette.palette[i] = c.u;
370 p_sys->p_context->palctrl = &p_sys->palette;
372 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
373 if( p_dec->fmt_out.video.p_palette )
374 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
376 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
378 p_sys->p_context->palctrl = &p_sys->palette;
381 /* ***** init this codec with special data ***** */
382 ffmpeg_InitCodec( p_dec );
384 /* ***** Open the codec ***** */
385 if( ffmpeg_OpenCodec( p_dec ) < 0 )
387 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
388 av_free( p_sys->p_ff_pic );
396 /*****************************************************************************
397 * DecodeVideo: Called to decode one or more frames
398 *****************************************************************************/
399 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
401 decoder_sys_t *p_sys = p_dec->p_sys;
403 int b_null_size = false;
406 if( !pp_block || !*pp_block )
409 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
411 ffmpeg_InitCodec( p_dec );
412 if( p_sys->b_delayed_open )
414 if( ffmpeg_OpenCodec( p_dec ) )
415 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
420 if( p_sys->b_delayed_open )
422 block_Release( p_block );
426 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
428 p_sys->i_pts = 0; /* To make sure we recover properly */
430 p_sys->input_pts = p_sys->input_dts = 0;
431 p_sys->i_late_frames = 0;
433 block_Release( p_block );
435 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
436 //avcodec_flush_buffers( p_sys->p_context );
440 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
442 /* Do not care about late frames when prerolling
443 * TODO avoid decoding of non reference frame
444 * (ie all B except for H264 where it depends only on nal_ref_idc) */
445 p_sys->i_late_frames = 0;
448 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
449 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
453 msg_Err( p_dec, "more than 5 seconds of late video -> "
454 "dropping frame (computer too slow ?)" );
455 p_sys->i_pts = 0; /* To make sure we recover properly */
457 block_Release( p_block );
458 p_sys->i_late_frames--;
462 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
464 p_sys->input_pts = p_block->i_pts;
465 p_sys->input_dts = p_block->i_dts;
467 /* Make sure we don't reuse the same timestamps twice */
468 p_block->i_pts = p_block->i_dts = 0;
471 /* A good idea could be to decode all I pictures and see for the other */
472 if( !p_dec->b_pace_control &&
474 (p_sys->i_late_frames > 4) )
477 if( p_sys->i_late_frames < 12 )
479 p_sys->p_context->skip_frame =
480 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
481 AVDISCARD_BIDIR : p_sys->i_skip_frame;
485 /* picture too late, won't decode
486 * but break picture until a new I, and for mpeg4 ...*/
487 p_sys->i_late_frames--; /* needed else it will never be decrease */
488 block_Release( p_block );
494 if( p_sys->b_hurry_up )
495 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
496 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
502 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
504 if( p_sys->b_hurry_up )
505 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
508 else if( !b_drawpicture )
510 /* It creates broken picture
511 * FIXME either our parser or ffmpeg is broken */
513 if( p_sys->b_hurry_up )
514 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
520 * Do the actual decoding now
523 /* Don't forget that ffmpeg requires a little more bytes
524 * that the real frame size */
525 if( p_block->i_buffer > 0 )
527 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
529 p_block = block_Realloc( p_block, 0,
530 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
533 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
535 memset( p_block->p_buffer + p_block->i_buffer, 0,
536 FF_INPUT_BUFFER_PADDING_SIZE );
539 while( p_block->i_buffer > 0 || p_sys->b_flush )
541 int i_used, b_gotpicture;
544 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
546 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
548 if( b_null_size && p_sys->p_context->width > 0 &&
549 p_sys->p_context->height > 0 &&
552 /* Reparse it to not drop the I frame */
554 if( p_sys->b_hurry_up )
555 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
556 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
557 &b_gotpicture, p_block->p_buffer,
562 p_sys->b_first_frame = true;
564 if( p_block->i_buffer <= 0 )
565 p_sys->b_flush = false;
570 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
572 block_Release( p_block );
575 else if( i_used > p_block->i_buffer )
577 i_used = p_block->i_buffer;
581 p_block->i_buffer -= i_used;
582 p_block->p_buffer += i_used;
584 /* Nothing to display */
587 if( i_used == 0 ) break;
592 if( p_sys->p_ff_pic->pts )
593 p_sys->i_pts = p_sys->p_ff_pic->pts;
595 /* Update frame late count (except when doing preroll) */
596 mtime_t i_display_date = 0;
597 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
598 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
600 if( i_display_date > 0 && i_display_date <= mdate() )
602 p_sys->i_late_frames++;
603 if( p_sys->i_late_frames == 1 )
604 p_sys->i_late_frames_start = mdate();
608 p_sys->i_late_frames = 0;
611 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
613 /* Do not display the picture */
614 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
615 if( !b_drawpicture && p_pic )
616 decoder_DeletePicture( p_dec, p_pic );
618 ffmpeg_NextPts( p_dec );
622 if( !p_sys->p_ff_pic->opaque )
624 /* Get a new picture */
625 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
628 block_Release( p_block );
632 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
634 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
638 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
641 /* Sanity check (seems to be needed for some streams) */
642 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
644 p_sys->b_has_b_frames = true;
647 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
649 /* Fetch again the aspect ratio in case it changed */
650 p_dec->fmt_out.video.i_sar_num
651 = p_sys->p_context->sample_aspect_ratio.num;
652 p_dec->fmt_out.video.i_sar_den
653 = p_sys->p_context->sample_aspect_ratio.den;
655 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
657 p_dec->fmt_out.video.i_sar_num = 1;
658 p_dec->fmt_out.video.i_sar_den = 1;
662 /* Send decoded frame to vout */
665 p_pic->date = p_sys->i_pts;
667 ffmpeg_NextPts( p_dec );
669 if( p_sys->b_first_frame )
671 /* Hack to force display of still pictures */
672 p_sys->b_first_frame = false;
673 p_pic->b_force = true;
676 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
677 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
678 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
680 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
681 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
682 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
683 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
684 p_pic->i_qstride * i_mb_h );
685 switch( p_sys->p_ff_pic->qscale_type )
687 case FF_QSCALE_TYPE_MPEG1:
688 p_pic->i_qtype = QTYPE_MPEG1;
690 case FF_QSCALE_TYPE_MPEG2:
691 p_pic->i_qtype = QTYPE_MPEG2;
693 case FF_QSCALE_TYPE_H264:
694 p_pic->i_qtype = QTYPE_H264;
702 decoder_DeletePicture( p_dec, p_pic );
706 block_Release( p_block );
710 /*****************************************************************************
711 * EndVideo: decoder destruction
712 *****************************************************************************
713 * This function is called when the thread ends after a successful
715 *****************************************************************************/
716 void EndVideoDec( decoder_t *p_dec )
718 decoder_sys_t *p_sys = p_dec->p_sys;
720 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
721 if( p_sys->p_context->codec )
722 avcodec_flush_buffers( p_sys->p_context );
724 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
727 vlc_va_Delete( p_sys->p_va );
730 /*****************************************************************************
731 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
732 *****************************************************************************/
733 static void ffmpeg_InitCodec( decoder_t *p_dec )
735 decoder_sys_t *p_sys = p_dec->p_sys;
736 int i_size = p_dec->fmt_in.i_extra;
738 if( !i_size ) return;
740 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
744 p_sys->p_context->extradata_size = i_size + 12;
745 p = p_sys->p_context->extradata =
746 malloc( p_sys->p_context->extradata_size );
750 memcpy( &p[0], "SVQ3", 4 );
751 memset( &p[4], 0, 8 );
752 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
754 /* Now remove all atoms before the SMI one */
755 if( p_sys->p_context->extradata_size > 0x5a &&
756 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
758 uint8_t *psz = &p[0x52];
760 while( psz < &p[p_sys->p_context->extradata_size - 8] )
762 int i_size = GetDWBE( psz );
765 /* FIXME handle 1 as long size */
768 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
770 memmove( &p[0x52], psz,
771 &p[p_sys->p_context->extradata_size] - psz );
781 p_sys->p_context->extradata_size = i_size;
782 p_sys->p_context->extradata =
783 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
784 if( p_sys->p_context->extradata )
786 memcpy( p_sys->p_context->extradata,
787 p_dec->fmt_in.p_extra, i_size );
788 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
789 0, FF_INPUT_BUFFER_PADDING_SIZE );
794 /*****************************************************************************
796 *****************************************************************************/
797 static int ffmpeg_OpenCodec( decoder_t *p_dec )
799 decoder_sys_t *p_sys = p_dec->p_sys;
801 if( p_sys->p_context->extradata_size <= 0 )
803 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
804 p_sys->i_codec_id == CODEC_ID_VORBIS ||
805 p_sys->i_codec_id == CODEC_ID_THEORA )
807 msg_Warn( p_dec, "waiting for extra data for codec %s",
808 p_sys->psz_namecodec );
812 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
813 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
814 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
815 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
817 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
822 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
823 vlc_avcodec_unlock();
826 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
828 p_sys->b_delayed_open = false;
832 /*****************************************************************************
833 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
834 * picture_t structure (when not in direct rendering mode).
835 *****************************************************************************/
836 static void ffmpeg_CopyPicture( decoder_t *p_dec,
837 picture_t *p_pic, AVFrame *p_ff_pic )
839 decoder_sys_t *p_sys = p_dec->p_sys;
843 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
845 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
847 int i_plane, i_size, i_line;
848 uint8_t *p_dst, *p_src;
849 int i_src_stride, i_dst_stride;
851 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
853 p_src = p_ff_pic->data[i_plane];
854 p_dst = p_pic->p[i_plane].p_pixels;
855 i_src_stride = p_ff_pic->linesize[i_plane];
856 i_dst_stride = p_pic->p[i_plane].i_pitch;
858 i_size = __MIN( i_src_stride, i_dst_stride );
859 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
862 vlc_memcpy( p_dst, p_src, i_size );
863 p_src += i_src_stride;
864 p_dst += i_dst_stride;
870 msg_Err( p_dec, "don't know how to convert chroma %i",
871 p_sys->p_context->pix_fmt );
876 /*****************************************************************************
877 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
878 *****************************************************************************
879 * It is used for direct rendering as well as to get the right PTS for each
880 * decoded picture (even in indirect rendering mode).
881 *****************************************************************************/
882 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
884 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
887 decoder_t *p_dec = (decoder_t *)p_context->opaque;
888 decoder_sys_t *p_sys = p_dec->p_sys;
891 /* Set picture PTS */
892 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
895 p_ff_pic->opaque = NULL;
899 #ifdef HAVE_AVCODEC_VA
900 /* hwaccel_context is not present in old fffmpeg version */
901 if( vlc_va_Setup( p_sys->p_va,
902 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
903 p_sys->p_context->width, p_sys->p_context->height ) )
905 msg_Err( p_dec, "vlc_va_Setup failed" );
913 p_ff_pic->type = FF_BUFFER_TYPE_USER;
914 /* FIXME what is that, should give good value */
915 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
917 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
919 msg_Err( p_dec, "VaGrabSurface failed" );
924 else if( !p_sys->b_direct_rendering )
926 /* Not much to do in indirect rendering mode. */
927 return avcodec_default_get_buffer( p_context, p_ff_pic );
930 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
931 * so we need to check for direct rendering again. */
933 int i_width = p_sys->p_context->width;
934 int i_height = p_sys->p_context->height;
935 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
937 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
938 p_context->pix_fmt == PIX_FMT_PAL8 )
941 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
943 /* Get a new picture */
944 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
947 bool b_compatible = true;
948 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
949 p_pic->p[0].i_lines < i_height )
950 b_compatible = false;
951 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
954 switch( p_sys->i_codec_id )
964 i_align = i == 0 ? 16 : 8;
967 if( p_pic->p[i].i_pitch % i_align )
968 b_compatible = false;
969 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
970 b_compatible = false;
972 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
974 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
975 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
976 b_compatible = false;
980 decoder_DeletePicture( p_dec, p_pic );
984 if( p_sys->i_direct_rendering_used != 1 )
986 msg_Dbg( p_dec, "using direct rendering" );
987 p_sys->i_direct_rendering_used = 1;
990 p_sys->p_context->draw_horiz_band = NULL;
992 p_ff_pic->opaque = (void*)p_pic;
993 p_ff_pic->type = FF_BUFFER_TYPE_USER;
994 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
995 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
996 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
997 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
999 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1000 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1001 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1002 p_ff_pic->linesize[3] = 0;
1004 decoder_LinkPicture( p_dec, p_pic );
1006 /* FIXME what is that, should give good value */
1007 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1012 if( p_sys->i_direct_rendering_used != 0 )
1014 msg_Warn( p_dec, "disabling direct rendering" );
1015 p_sys->i_direct_rendering_used = 0;
1017 return avcodec_default_get_buffer( p_context, p_ff_pic );
1019 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1021 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1025 p_ff_pic->pts = AV_NOPTS_VALUE;
1027 /* We always use default reget function, it works perfectly fine */
1028 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
1030 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
1031 * ffmpeg_GetFrameBuf call) */
1032 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
1033 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
1038 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
1040 decoder_sys_t *p_sys = p_dec->p_sys;
1042 /* Set picture PTS */
1043 if( p_sys->input_pts )
1045 p_ff_pic->pts = p_sys->input_pts;
1047 else if( p_sys->input_dts )
1049 /* Some demuxers only set the dts so let's try to find a useful
1050 * timestamp from this */
1051 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1052 !p_ff_pic->reference || !p_sys->i_pts )
1054 p_ff_pic->pts = p_sys->input_dts;
1066 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1068 p_sys->input_pts = p_sys->input_dts = 0;
1072 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1075 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1076 decoder_sys_t *p_sys = p_dec->p_sys;
1080 vlc_va_Release( p_sys->p_va, p_ff_pic );
1083 for( int i = 0; i < 4; i++ )
1084 p_ff_pic->data[i] = NULL;
1086 else if( !p_ff_pic->opaque )
1088 avcodec_default_release_buffer( p_context, p_ff_pic );
1092 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1094 decoder_UnlinkPicture( p_dec, p_pic );
1097 for( int i = 0; i < 4; i++ )
1098 p_ff_pic->data[i] = NULL;
1102 static void ffmpeg_NextPts( decoder_t *p_dec )
1104 decoder_sys_t *p_sys = p_dec->p_sys;
1106 if( p_sys->i_pts <= 0 )
1109 /* interpolate the next PTS */
1110 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1111 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1113 p_sys->i_pts += INT64_C(1000000) *
1114 (2 + p_sys->p_ff_pic->repeat_pict) *
1115 p_dec->fmt_in.video.i_frame_rate_base /
1116 (2 * p_dec->fmt_in.video.i_frame_rate);
1118 else if( p_sys->p_context->time_base.den > 0 )
1120 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1121 int i_tick = p_sys->p_context->ticks_per_frame;
1128 p_sys->i_pts += INT64_C(1000000) *
1129 (2 + p_sys->p_ff_pic->repeat_pict) *
1130 i_tick * p_sys->p_context->time_base.num /
1131 (2 * p_sys->p_context->time_base.den);
1135 #ifdef HAVE_AVCODEC_VA
1136 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1137 const enum PixelFormat *pi_fmt )
1139 decoder_t *p_dec = p_codec->opaque;
1140 decoder_sys_t *p_sys = p_dec->p_sys;
1144 vlc_va_Delete( p_sys->p_va );
1148 /* Try too look for a supported hw acceleration */
1149 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1151 static const char *ppsz_name[PIX_FMT_NB] = {
1152 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1153 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1154 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1155 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1156 #ifdef HAVE_AVCODEC_DXVA2
1157 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1159 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1160 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1162 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1164 /* Only VLD supported */
1165 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1167 #ifdef HAVE_AVCODEC_VAAPI
1168 msg_Dbg( p_dec, "Trying VA API" );
1169 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1171 msg_Warn( p_dec, "Failed to open VA API" );
1176 #ifdef HAVE_AVCODEC_DXVA2
1177 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1179 msg_Dbg( p_dec, "Trying DXVA2" );
1180 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1182 msg_Warn( p_dec, "Failed to open DXVA2" );
1187 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1189 /* We try to call vlc_va_Setup when possible to detect errors when
1190 * possible (later is too late) */
1191 if( vlc_va_Setup( p_sys->p_va,
1192 &p_sys->p_context->hwaccel_context,
1193 &p_dec->fmt_out.video.i_chroma,
1194 p_sys->p_context->width, p_sys->p_context->height ) )
1196 msg_Err( p_dec, "vlc_va_Setup failed" );
1197 vlc_va_Delete( p_sys->p_va );
1204 if( p_sys->p_va->description )
1205 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1207 /* FIXME this will disabled direct rendering
1208 * even if a new pixel format is renegociated
1210 p_sys->b_direct_rendering = false;
1211 p_sys->p_context->draw_horiz_band = NULL;
1216 /* Fallback to default behaviour */
1217 return avcodec_default_get_format( p_codec, pi_fmt );