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 #elif defined(HAVE_FFMPEG_AVCODEC_H)
45 # include <ffmpeg/avcodec.h>
53 /*****************************************************************************
54 * decoder_sys_t : decoder descriptor
55 *****************************************************************************/
60 /* Video decoder specific part */
67 /* for frame skipping algo */
69 enum AVDiscard i_skip_frame;
70 enum AVDiscard i_skip_idct;
72 /* how many decoded frames are late */
74 mtime_t i_late_frames_start;
76 /* for direct rendering */
77 bool b_direct_rendering;
81 /* Hack to force display of still pictures */
84 int i_buffer_orig, i_buffer;
85 char *p_buffer_orig, *p_buffer;
88 AVPaletteControl palette;
97 /* FIXME (dummy palette for now) */
98 static const AVPaletteControl palette_control;
100 /*****************************************************************************
102 *****************************************************************************/
103 static void ffmpeg_InitCodec ( decoder_t * );
104 static int ffmpeg_OpenCodec ( decoder_t * );
105 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
106 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
107 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
108 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
109 static void ffmpeg_NextPts( decoder_t * );
111 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
112 const enum PixelFormat * );
115 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
117 uint8_t *p = (uint8_t*)&fcc;
118 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
121 /*****************************************************************************
123 *****************************************************************************/
125 /* Returns a new picture buffer */
126 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
127 AVCodecContext *p_context )
129 decoder_sys_t *p_sys = p_dec->p_sys;
131 p_dec->fmt_out.video.i_width = p_context->width;
132 p_dec->fmt_out.video.i_height = p_context->height;
134 if( !p_context->width || !p_context->height )
136 return NULL; /* invalid display size */
139 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
141 /* we are doomed, but not really, because most codecs set their pix_fmt
143 * FIXME does it make sense here ? */
144 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
146 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
148 /* If an aspect-ratio was specified in the input format then force it */
149 if( p_dec->fmt_in.video.i_aspect )
151 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
155 p_dec->fmt_out.video.i_aspect =
156 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
157 p_context->width / p_context->height );
158 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
159 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
161 if( p_dec->fmt_out.video.i_aspect == 0 )
163 p_dec->fmt_out.video.i_aspect =
164 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
168 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
169 p_dec->fmt_in.video.i_frame_rate_base > 0 )
171 p_dec->fmt_out.video.i_frame_rate =
172 p_dec->fmt_in.video.i_frame_rate;
173 p_dec->fmt_out.video.i_frame_rate_base =
174 p_dec->fmt_in.video.i_frame_rate_base;
176 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
178 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
179 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
182 return decoder_NewPicture( p_dec );
185 /*****************************************************************************
186 * InitVideo: initialize the video decoder
187 *****************************************************************************
188 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
189 * opened (done after the first decoded frame).
190 *****************************************************************************/
191 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
192 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
194 decoder_sys_t *p_sys;
197 /* Allocate the memory needed to store the decoder's structure */
198 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
201 p_sys->p_context = p_context;
202 p_sys->p_codec = p_codec;
203 p_sys->i_codec_id = i_codec_id;
204 p_sys->psz_namecodec = psz_namecodec;
205 p_sys->p_ff_pic = avcodec_alloc_frame();
206 p_sys->b_delayed_open = true;
209 /* ***** Fill p_context with init values ***** */
210 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
212 /* ***** Get configuration of ffmpeg plugin ***** */
213 p_sys->p_context->workaround_bugs =
214 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
215 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
216 p_sys->p_context->error_resilience =
217 config_GetInt( p_dec, "ffmpeg-error-resilience" );
219 p_sys->p_context->error_recognition =
220 config_GetInt( p_dec, "ffmpeg-error-resilience" );
223 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
224 var_Get( p_dec, "grayscale", &val );
225 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
227 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
228 var_Get( p_dec, "ffmpeg-vismv", &val );
229 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
231 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
232 var_Get( p_dec, "ffmpeg-lowres", &val );
233 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
235 var_Create( p_dec, "ffmpeg-skiploopfilter",
236 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
237 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
238 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
239 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
240 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
241 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
243 bool b_fast = var_CreateGetBool( p_dec, "ffmpeg-fast" );
244 if( b_fast ) p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
246 /* ***** ffmpeg frame skipping ***** */
247 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
248 var_Get( p_dec, "ffmpeg-hurry-up", &val );
249 p_sys->b_hurry_up = val.b_bool;
251 var_Create( p_dec, "ffmpeg-skip-frame", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
252 var_Get( p_dec, "ffmpeg-skip-frame", &val );
256 p_sys->p_context->skip_frame = AVDISCARD_NONE;
259 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
262 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
265 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
268 p_sys->p_context->skip_frame = AVDISCARD_ALL;
271 p_sys->p_context->skip_frame = AVDISCARD_NONE;
274 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
276 var_Create( p_dec, "ffmpeg-skip-idct", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
277 var_Get( p_dec, "ffmpeg-skip-idct", &val );
281 p_sys->p_context->skip_idct = AVDISCARD_NONE;
284 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
287 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
290 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
293 p_sys->p_context->skip_idct = AVDISCARD_ALL;
296 p_sys->p_context->skip_idct = AVDISCARD_NONE;
299 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
301 /* ***** ffmpeg direct rendering ***** */
302 p_sys->b_direct_rendering = false;
303 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
304 var_Get( p_dec, "ffmpeg-dr", &val );
305 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
306 /* Apparently direct rendering doesn't work with YUV422P */
307 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
308 /* H264 uses too many reference frames */
309 p_sys->i_codec_id != CODEC_ID_H264 &&
310 /* No idea why ... but this fixes flickering on some TSCC streams */
311 p_sys->i_codec_id != CODEC_ID_TSCC &&
312 !p_sys->p_context->debug_mv )
314 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
315 * so we need to do another check in ffmpeg_GetFrameBuf() */
316 p_sys->b_direct_rendering = true;
319 /* ffmpeg doesn't properly release old pictures when frames are skipped */
320 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
321 if( p_sys->b_direct_rendering )
323 msg_Dbg( p_dec, "using direct rendering" );
324 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
327 /* Always use our get_buffer wrapper so we can calculate the
329 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
330 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
331 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
332 p_sys->p_context->opaque = p_dec;
334 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
335 p_sys->p_context->get_format = ffmpeg_GetFormat;
337 /* ***** misc init ***** */
338 p_sys->input_pts = p_sys->input_dts = 0;
340 p_sys->b_has_b_frames = false;
341 p_sys->b_first_frame = true;
342 p_sys->b_flush = false;
343 p_sys->i_late_frames = 0;
345 p_sys->i_buffer_orig = 1;
346 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
347 if( !p_sys->p_buffer_orig )
353 /* Set output properties */
354 p_dec->fmt_out.i_cat = VIDEO_ES;
355 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
357 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
358 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
360 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
363 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
364 if( p_dec->fmt_in.video.p_palette )
366 p_sys->palette.palette_changed = 1;
368 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
374 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
375 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
376 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
377 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
379 p_sys->palette.palette[i] = c.u;
381 p_sys->p_context->palctrl = &p_sys->palette;
383 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
384 if( p_dec->fmt_out.video.p_palette )
385 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
387 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
389 p_sys->p_context->palctrl = &p_sys->palette;
392 /* ***** init this codec with special data ***** */
393 ffmpeg_InitCodec( p_dec );
395 /* ***** Open the codec ***** */
396 if( ffmpeg_OpenCodec( p_dec ) < 0 )
398 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
399 free( p_sys->p_buffer_orig );
407 /*****************************************************************************
408 * DecodeVideo: Called to decode one or more frames
409 *****************************************************************************/
410 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
412 decoder_sys_t *p_sys = p_dec->p_sys;
414 int b_null_size = false;
417 if( !pp_block || !*pp_block )
420 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
422 ffmpeg_InitCodec( p_dec );
423 if( p_sys->b_delayed_open )
425 if( ffmpeg_OpenCodec( p_dec ) )
426 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
431 if( p_sys->b_delayed_open )
433 block_Release( p_block );
437 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
440 p_sys->i_pts = 0; /* To make sure we recover properly */
442 p_sys->input_pts = p_sys->input_dts = 0;
443 p_sys->i_late_frames = 0;
445 block_Release( p_block );
447 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
448 //avcodec_flush_buffers( p_sys->p_context );
452 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
454 /* Do not care about late frames when prerolling
455 * TODO avoid decoding of non reference frame
456 * (ie all B except for H264 where it depends only on nal_ref_idc) */
457 p_sys->i_late_frames = 0;
460 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
461 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
465 msg_Err( p_dec, "more than 5 seconds of late video -> "
466 "dropping frame (computer too slow ?)" );
467 p_sys->i_pts = 0; /* To make sure we recover properly */
469 block_Release( p_block );
470 p_sys->i_late_frames--;
474 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
476 p_sys->input_pts = p_block->i_pts;
477 p_sys->input_dts = p_block->i_dts;
479 /* Make sure we don't reuse the same timestamps twice */
480 p_block->i_pts = p_block->i_dts = 0;
483 /* A good idea could be to decode all I pictures and see for the other */
484 if( !p_dec->b_pace_control &&
486 (p_sys->i_late_frames > 4) )
489 if( p_sys->i_late_frames < 12 )
491 p_sys->p_context->skip_frame =
492 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
493 AVDISCARD_BIDIR : p_sys->i_skip_frame;
497 /* picture too late, won't decode
498 * but break picture until a new I, and for mpeg4 ...*/
499 p_sys->i_late_frames--; /* needed else it will never be decrease */
500 block_Release( p_block );
507 if( p_sys->b_hurry_up )
508 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
509 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
515 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
517 if( p_sys->b_hurry_up )
518 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
521 else if( !b_drawpicture )
523 /* It creates broken picture
524 * FIXME either our parser or ffmpeg is broken */
526 if( p_sys->b_hurry_up )
527 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
533 * Do the actual decoding now
536 /* Don't forget that ffmpeg requires a little more bytes
537 * that the real frame size */
538 if( p_block->i_buffer > 0 )
540 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
542 p_sys->i_buffer = p_block->i_buffer;
543 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
544 p_sys->i_buffer_orig )
546 free( p_sys->p_buffer_orig );
547 p_sys->i_buffer_orig =
548 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
549 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
551 p_sys->p_buffer = p_sys->p_buffer_orig;
552 p_sys->i_buffer = p_block->i_buffer;
553 if( !p_sys->p_buffer )
555 block_Release( p_block );
558 vlc_memcpy( p_sys->p_buffer, p_block->p_buffer, p_block->i_buffer );
559 memset( p_sys->p_buffer + p_block->i_buffer, 0,
560 FF_INPUT_BUFFER_PADDING_SIZE );
562 p_block->i_buffer = 0;
565 while( p_sys->i_buffer > 0 || p_sys->b_flush )
567 int i_used, b_gotpicture;
570 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
572 p_sys->i_buffer <= 0 && p_sys->b_flush ? NULL : (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
574 if( b_null_size && p_sys->p_context->width > 0 &&
575 p_sys->p_context->height > 0 &&
578 /* Reparse it to not drop the I frame */
580 if( p_sys->b_hurry_up )
581 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
582 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
584 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
588 p_sys->b_first_frame = true;
590 if( p_sys->i_buffer <= 0 )
591 p_sys->b_flush = false;
596 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
598 block_Release( p_block );
601 else if( i_used > p_sys->i_buffer )
603 i_used = p_sys->i_buffer;
607 p_sys->i_buffer -= i_used;
608 p_sys->p_buffer += i_used;
610 /* Nothing to display */
613 if( i_used == 0 ) break;
618 if( p_sys->p_ff_pic->pts )
619 p_sys->i_pts = p_sys->p_ff_pic->pts;
621 /* Update frame late count (except when doing preroll) */
622 mtime_t i_display_date = 0;
623 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
624 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
626 if( i_display_date > 0 && i_display_date <= mdate() )
628 p_sys->i_late_frames++;
629 if( p_sys->i_late_frames == 1 )
630 p_sys->i_late_frames_start = mdate();
634 p_sys->i_late_frames = 0;
637 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
639 /* Do not display the picture */
640 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
641 if( !b_drawpicture && p_pic )
642 decoder_DeletePicture( p_dec, p_pic );
644 ffmpeg_NextPts( p_dec );
648 if( !p_sys->p_ff_pic->opaque )
650 /* Get a new picture */
651 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
654 block_Release( p_block );
658 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
660 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
664 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
667 /* Sanity check (seems to be needed for some streams) */
668 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
670 p_sys->b_has_b_frames = true;
673 if( !p_dec->fmt_in.video.i_aspect )
675 /* Fetch again the aspect ratio in case it changed */
676 p_dec->fmt_out.video.i_aspect =
678 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
679 * p_sys->p_context->width / p_sys->p_context->height );
680 p_dec->fmt_out.video.i_sar_num
681 = p_sys->p_context->sample_aspect_ratio.num;
682 p_dec->fmt_out.video.i_sar_den
683 = p_sys->p_context->sample_aspect_ratio.den;
685 if( p_dec->fmt_out.video.i_aspect == 0 )
687 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
688 * p_sys->p_context->width / p_sys->p_context->height;
692 /* Send decoded frame to vout */
695 p_pic->date = p_sys->i_pts;
697 ffmpeg_NextPts( p_dec );
699 if( p_sys->b_first_frame )
701 /* Hack to force display of still pictures */
702 p_sys->b_first_frame = false;
703 p_pic->b_force = true;
706 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
707 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
708 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
710 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
711 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
712 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
713 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
714 p_pic->i_qstride * i_mb_h );
715 switch( p_sys->p_ff_pic->qscale_type )
717 case FF_QSCALE_TYPE_MPEG1:
718 p_pic->i_qtype = QTYPE_MPEG1;
720 case FF_QSCALE_TYPE_MPEG2:
721 p_pic->i_qtype = QTYPE_MPEG2;
723 case FF_QSCALE_TYPE_H264:
724 p_pic->i_qtype = QTYPE_H264;
732 decoder_DeletePicture( p_dec, p_pic );
736 block_Release( p_block );
740 /*****************************************************************************
741 * EndVideo: decoder destruction
742 *****************************************************************************
743 * This function is called when the thread ends after a successful
745 *****************************************************************************/
746 void EndVideoDec( decoder_t *p_dec )
748 decoder_sys_t *p_sys = p_dec->p_sys;
750 avcodec_flush_buffers( p_sys->p_context );
752 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
753 free( p_sys->p_buffer_orig );
756 VaDelete( p_sys->p_va );
759 /*****************************************************************************
760 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
761 *****************************************************************************/
762 static void ffmpeg_InitCodec( decoder_t *p_dec )
764 decoder_sys_t *p_sys = p_dec->p_sys;
765 int i_size = p_dec->fmt_in.i_extra;
767 if( !i_size ) return;
769 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
773 p_sys->p_context->extradata_size = i_size + 12;
774 p = p_sys->p_context->extradata =
775 malloc( p_sys->p_context->extradata_size );
779 memcpy( &p[0], "SVQ3", 4 );
780 memset( &p[4], 0, 8 );
781 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
783 /* Now remove all atoms before the SMI one */
784 if( p_sys->p_context->extradata_size > 0x5a &&
785 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
787 uint8_t *psz = &p[0x52];
789 while( psz < &p[p_sys->p_context->extradata_size - 8] )
791 int i_size = GetDWBE( psz );
794 /* FIXME handle 1 as long size */
797 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
799 memmove( &p[0x52], psz,
800 &p[p_sys->p_context->extradata_size] - psz );
810 p_sys->p_context->extradata_size = i_size;
811 p_sys->p_context->extradata =
812 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
813 if( p_sys->p_context->extradata )
815 memcpy( p_sys->p_context->extradata,
816 p_dec->fmt_in.p_extra, i_size );
817 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
818 0, FF_INPUT_BUFFER_PADDING_SIZE );
823 /*****************************************************************************
825 *****************************************************************************/
826 static int ffmpeg_OpenCodec( decoder_t *p_dec )
828 decoder_sys_t *p_sys = p_dec->p_sys;
830 if( p_sys->p_context->extradata_size <= 0 )
832 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
833 p_sys->i_codec_id == CODEC_ID_VORBIS ||
834 p_sys->i_codec_id == CODEC_ID_THEORA )
836 msg_Warn( p_dec, "waiting for extra data for codec %s",
837 p_sys->psz_namecodec );
841 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
842 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
843 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
844 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
846 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
851 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
852 vlc_avcodec_unlock();
855 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
857 p_sys->b_delayed_open = false;
861 char psz_version[128];
863 VaVersion( p_sys->p_va, psz_version, sizeof(psz_version) );
864 msg_Info( p_dec, "Using VA API version %s for hardware decoding.", psz_version );
869 /*****************************************************************************
870 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
871 * picture_t structure (when not in direct rendering mode).
872 *****************************************************************************/
873 static void ffmpeg_CopyPicture( decoder_t *p_dec,
874 picture_t *p_pic, AVFrame *p_ff_pic )
876 decoder_sys_t *p_sys = p_dec->p_sys;
880 VaExtract( p_sys->p_va, p_pic, p_ff_pic );
882 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
884 int i_plane, i_size, i_line;
885 uint8_t *p_dst, *p_src;
886 int i_src_stride, i_dst_stride;
888 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
890 p_src = p_ff_pic->data[i_plane];
891 p_dst = p_pic->p[i_plane].p_pixels;
892 i_src_stride = p_ff_pic->linesize[i_plane];
893 i_dst_stride = p_pic->p[i_plane].i_pitch;
895 i_size = __MIN( i_src_stride, i_dst_stride );
896 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
899 vlc_memcpy( p_dst, p_src, i_size );
900 p_src += i_src_stride;
901 p_dst += i_dst_stride;
907 msg_Err( p_dec, "don't know how to convert chroma %i",
908 p_sys->p_context->pix_fmt );
913 /*****************************************************************************
914 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
915 *****************************************************************************
916 * It is used for direct rendering as well as to get the right PTS for each
917 * decoded picture (even in indirect rendering mode).
918 *****************************************************************************/
919 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
921 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
924 decoder_t *p_dec = (decoder_t *)p_context->opaque;
925 decoder_sys_t *p_sys = p_dec->p_sys;
928 /* Set picture PTS */
929 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
932 p_ff_pic->opaque = NULL;
936 #ifdef HAVE_AVCODEC_VAAPI
937 /* hwaccel_context is not present in old fffmpeg version */
938 if( VaSetup( p_sys->p_va,
939 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
940 p_sys->p_context->width, p_sys->p_context->height ) )
942 msg_Err( p_dec, "VaSetup failed" );
950 p_ff_pic->type = FF_BUFFER_TYPE_USER;
951 /* FIXME what is that, should give good value */
952 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
954 if( VaGrabSurface( p_sys->p_va, p_ff_pic ) )
956 msg_Err( p_dec, "VaGrabSurface failed" );
961 else if( !p_sys->b_direct_rendering )
963 /* Not much to do in indirect rendering mode */
964 return avcodec_default_get_buffer( p_context, p_ff_pic );
967 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
968 * so we need to check for direct rendering again. */
970 int i_width = p_sys->p_context->width;
971 int i_height = p_sys->p_context->height;
972 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
974 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
975 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 ||
976 /* We only pad picture up to 16 */
977 PAD(p_sys->p_context->width,16) < i_width || PAD(p_sys->p_context->height,16) < i_height ||
978 p_context->pix_fmt == PIX_FMT_PAL8 )
980 msg_Dbg( p_dec, "disabling direct rendering" );
981 p_sys->b_direct_rendering = false;
982 return avcodec_default_get_buffer( p_context, p_ff_pic );
984 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
986 /* Get a new picture */
987 //p_sys->p_vout->render.b_allow_modify_pics = 0;
988 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
991 p_sys->b_direct_rendering = false;
992 return avcodec_default_get_buffer( p_context, p_ff_pic );
994 p_sys->p_context->draw_horiz_band = NULL;
996 p_ff_pic->opaque = (void*)p_pic;
997 p_ff_pic->type = FF_BUFFER_TYPE_USER;
998 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
999 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1000 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1001 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1003 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1004 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1005 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1006 p_ff_pic->linesize[3] = 0;
1008 decoder_LinkPicture( p_dec, p_pic );
1010 /* FIXME what is that, should give good value */
1011 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1015 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1017 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1021 p_ff_pic->pts = AV_NOPTS_VALUE;
1023 /* We always use default reget function, it works perfectly fine */
1024 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
1026 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
1027 * ffmpeg_GetFrameBuf call) */
1028 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
1029 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
1034 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
1036 decoder_sys_t *p_sys = p_dec->p_sys;
1038 /* Set picture PTS */
1039 if( p_sys->input_pts )
1041 p_ff_pic->pts = p_sys->input_pts;
1043 else if( p_sys->input_dts )
1045 /* Some demuxers only set the dts so let's try to find a useful
1046 * timestamp from this */
1047 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1048 !p_ff_pic->reference || !p_sys->i_pts )
1050 p_ff_pic->pts = p_sys->input_dts;
1062 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1064 p_sys->input_pts = p_sys->input_dts = 0;
1068 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1071 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1072 decoder_sys_t *p_sys = p_dec->p_sys;
1076 VaUngrabSurface( p_sys->p_va, p_ff_pic );
1079 for( int i = 0; i < 4; i++ )
1080 p_ff_pic->data[i] = NULL;
1082 else if( !p_ff_pic->opaque )
1084 avcodec_default_release_buffer( p_context, p_ff_pic );
1088 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1090 decoder_UnlinkPicture( p_dec, p_pic );
1093 for( int i = 0; i < 4; i++ )
1094 p_ff_pic->data[i] = NULL;
1098 static void ffmpeg_NextPts( decoder_t *p_dec )
1100 decoder_sys_t *p_sys = p_dec->p_sys;
1102 if( p_sys->i_pts <= 0 )
1105 /* interpolate the next PTS */
1106 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1107 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1109 p_sys->i_pts += INT64_C(1000000) *
1110 (2 + p_sys->p_ff_pic->repeat_pict) *
1111 p_dec->fmt_in.video.i_frame_rate_base /
1112 (2 * p_dec->fmt_in.video.i_frame_rate);
1114 else if( p_sys->p_context->time_base.den > 0 )
1116 p_sys->i_pts += INT64_C(1000000) *
1117 (2 + p_sys->p_ff_pic->repeat_pict) *
1118 p_sys->p_context->time_base.num /
1119 (2 * p_sys->p_context->time_base.den);
1123 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1124 const enum PixelFormat *pi_fmt )
1126 decoder_t *p_dec = p_codec->opaque;
1127 decoder_sys_t *p_sys = p_dec->p_sys;
1131 VaDelete( p_sys->p_va );
1135 /* Try too look for a supported hw acceleration */
1136 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1138 static const char *ppsz_name[PIX_FMT_NB] = {
1139 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1140 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1141 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1142 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1143 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1144 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1146 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1148 /* Only VLD supported */
1149 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1151 msg_Dbg( p_dec, "Trying VA API" );
1152 p_sys->p_va = VaNew( p_sys->i_codec_id );
1155 /* FIXME this will disabled direct rendering
1156 * even if a new pixel format is renegociated
1158 * FIXME Try to call VaSetup when possible
1159 * to detect errors when possible (later is too late) */
1160 p_sys->b_direct_rendering = false;
1161 p_sys->p_context->draw_horiz_band = NULL;
1164 msg_Warn( p_dec, "Failed to open VA API" );
1168 /* Fallback to default behaviour */
1169 return avcodec_default_get_format( p_codec, pi_fmt );