1 /*****************************************************************************
2 * switcher.c: MPEG2 video switcher module
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
33 #include <vlc_charset.h>
34 #include <vlc_network.h>
37 #ifdef HAVE_FFMPEG_AVCODEC_H
38 # include <ffmpeg/avcodec.h>
43 #ifdef HAVE_POSTPROC_POSTPROCESS_H
44 # include <postproc/postprocess.h>
46 # include <libpostproc/postprocess.h>
49 #define SOUT_CFG_PREFIX "sout-switcher-"
50 #define MAX_PICTURES 10
52 #define MAX_THRESHOLD 99999999
54 /*****************************************************************************
56 *****************************************************************************/
57 static int Open ( vlc_object_t * );
58 static void Close ( vlc_object_t * );
60 static sout_stream_id_t *Add( sout_stream_t *, es_format_t * );
61 static int Del( sout_stream_t *, sout_stream_id_t * );
62 static int Send( sout_stream_t *, sout_stream_id_t *, block_t * );
64 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
66 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
67 int i_width, int i_height,
69 static void NetCommand( sout_stream_t *p_stream );
70 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id );
71 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
73 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
76 /*****************************************************************************
78 *****************************************************************************/
79 #define FILES_TEXT N_("Files")
80 #define FILES_LONGTEXT N_( \
81 "Full paths of the files separated by colons." )
82 #define SIZES_TEXT N_("Sizes")
83 #define SIZES_LONGTEXT N_( \
84 "List of sizes separated by colons (720x576:480x576)." )
85 #define RATIO_TEXT N_("Aspect ratio")
86 #define RATIO_LONGTEXT N_( \
87 "Aspect ratio (4:3, 16:9)." )
88 #define PORT_TEXT N_("Command UDP port")
89 #define PORT_LONGTEXT N_( \
90 "UDP port to listen to for commands." )
91 #define COMMAND_TEXT N_("Command")
92 #define COMMAND_LONGTEXT N_( \
93 "Initial command to execute." )
94 #define GOP_TEXT N_("GOP size")
95 #define GOP_LONGTEXT N_( \
96 "Number of P frames between two I frames." )
97 #define QSCALE_TEXT N_("Quantizer scale")
98 #define QSCALE_LONGTEXT N_( \
99 "Fixed quantizer scale to use." )
100 #define AUDIO_TEXT N_("Mute audio")
101 #define AUDIO_LONGTEXT N_( \
102 "Mute audio when command is not 0." )
105 set_description( _("MPEG2 video switcher stream output") );
106 set_capability( "sout stream", 50 );
107 add_shortcut( "switcher" );
108 set_callbacks( Open, Close );
110 add_string( SOUT_CFG_PREFIX "files", "", NULL, FILES_TEXT,
111 FILES_LONGTEXT, VLC_FALSE );
112 add_string( SOUT_CFG_PREFIX "sizes", "", NULL, SIZES_TEXT,
113 SIZES_LONGTEXT, VLC_FALSE );
114 add_string( SOUT_CFG_PREFIX "aspect-ratio", "4:3", NULL, RATIO_TEXT,
115 RATIO_LONGTEXT, VLC_FALSE );
116 add_integer( SOUT_CFG_PREFIX "port", 5001, NULL,
117 PORT_TEXT, PORT_LONGTEXT, VLC_TRUE );
118 add_integer( SOUT_CFG_PREFIX "command", 0, NULL,
119 COMMAND_TEXT, COMMAND_LONGTEXT, VLC_TRUE );
120 add_integer( SOUT_CFG_PREFIX "gop", 8, NULL,
121 GOP_TEXT, GOP_LONGTEXT, VLC_TRUE );
122 add_integer( SOUT_CFG_PREFIX "qscale", 5, NULL,
123 QSCALE_TEXT, QSCALE_LONGTEXT, VLC_TRUE );
124 add_bool( SOUT_CFG_PREFIX "mute-audio", 1, NULL,
125 AUDIO_TEXT, AUDIO_LONGTEXT, VLC_TRUE );
128 static const char *ppsz_sout_options[] = {
129 "files", "sizes", "aspect-ratio", "port", "command", "gop", "qscale",
133 struct sout_stream_sys_t
135 sout_stream_t *p_out;
139 sout_stream_id_t *pp_audio_ids[MAX_AUDIO];
143 picture_t p_pictures[MAX_PICTURES];
148 int i_cmd, i_old_cmd;
151 struct sout_stream_id_t
154 vlc_bool_t b_switcher_video;
155 vlc_bool_t b_switcher_audio;
161 AVCodecContext *ff_enc_c;
163 uint8_t *p_buffer_out;
168 /*****************************************************************************
170 *****************************************************************************/
171 static int Open( vlc_object_t *p_this )
173 sout_stream_t *p_stream = (sout_stream_t*)p_this;
174 sout_stream_sys_t *p_sys;
176 char *psz_files, *psz_sizes;
177 int i_height = 0, i_width = 0;
179 p_sys = malloc( sizeof(sout_stream_sys_t) );
180 memset( p_sys, 0, sizeof(sout_stream_sys_t) );
182 p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
185 msg_Err( p_stream, "cannot create chain" );
190 config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
193 var_Get( p_stream, SOUT_CFG_PREFIX "files", &val );
194 psz_files = val.psz_string;
195 var_Get( p_stream, SOUT_CFG_PREFIX "sizes", &val );
196 psz_sizes = val.psz_string;
198 p_sys->i_nb_pictures = 0;
199 while ( psz_files && *psz_files )
201 char * psz_file = psz_files;
202 char * psz_size = psz_sizes;
204 while ( *psz_files && *psz_files != ':' )
206 if ( *psz_files == ':' )
211 while ( *psz_sizes && *psz_sizes != ':' )
213 if ( *psz_sizes == ':' )
215 if ( sscanf( psz_size, "%dx%d", &i_width, &i_height ) != 2 )
217 msg_Err( p_stream, "bad size %s for file %s", psz_size,
224 if ( UnpackFromFile( p_stream, psz_file, i_width, i_height,
225 &p_sys->p_pictures[p_sys->i_nb_pictures] ) < 0 )
230 p_sys->i_nb_pictures++;
233 var_Get( p_stream, SOUT_CFG_PREFIX "aspect-ratio", &val );
234 if ( val.psz_string )
236 char *psz_parser = strchr( val.psz_string, ':' );
240 *psz_parser++ = '\0';
241 p_sys->i_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
242 / atoi( psz_parser );
246 msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
247 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
250 free( val.psz_string );
254 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
257 var_Get( p_stream, SOUT_CFG_PREFIX "port", &val );
258 p_sys->i_fd = net_ListenUDP1( p_stream, NULL, val.i_int );
259 if ( p_sys->i_fd < 0 )
265 var_Get( p_stream, SOUT_CFG_PREFIX "command", &val );
266 p_sys->i_cmd = val.i_int;
267 p_sys->i_old_cmd = 0;
269 var_Get( p_stream, SOUT_CFG_PREFIX "gop", &val );
270 p_sys->i_gop = val.i_int;
272 var_Get( p_stream, SOUT_CFG_PREFIX "qscale", &val );
273 p_sys->i_qscale = val.i_int;
275 var_Get( p_stream, SOUT_CFG_PREFIX "mute-audio", &val );
276 p_sys->b_audio = val.b_bool;
278 p_stream->pf_add = Add;
279 p_stream->pf_del = Del;
280 p_stream->pf_send = Send;
281 p_stream->p_sys = p_sys;
284 avcodec_register_all();
289 /*****************************************************************************
291 *****************************************************************************/
292 static void Close( vlc_object_t * p_this )
294 sout_stream_t *p_stream = (sout_stream_t *)p_this;
295 sout_stream_sys_t *p_sys = p_stream->p_sys;
297 sout_StreamDelete( p_sys->p_out );
302 /*****************************************************************************
303 * Add: Add an input elementary stream
304 *****************************************************************************/
305 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
307 sout_stream_sys_t *p_sys = p_stream->p_sys;
308 sout_stream_id_t *id;
310 id = malloc( sizeof( sout_stream_id_t ) );
311 memset( id, 0, sizeof( sout_stream_id_t ) );
314 if ( p_fmt->i_cat == VIDEO_ES
315 && (p_fmt->i_codec == VLC_FOURCC('m', 'p', 'g', 'v')
316 || p_fmt->i_codec == VLC_FOURCC('f', 'a', 'k', 'e')) )
318 id->b_switcher_video = VLC_TRUE;
319 p_fmt->i_codec = VLC_FOURCC('m', 'p', 'g', 'v');
321 "creating video switcher for fcc=`%4.4s' cmd:%d",
322 (char*)&p_fmt->i_codec, p_sys->i_cmd );
324 else if ( p_fmt->i_cat == AUDIO_ES
325 && p_fmt->i_codec == VLC_FOURCC('m', 'p', 'g', 'a')
328 int i_ff_codec = CODEC_ID_MP2;
331 id->b_switcher_audio = VLC_TRUE;
333 "creating audio switcher for fcc=`%4.4s' cmd:%d",
334 (char*)&p_fmt->i_codec, p_sys->i_cmd );
336 /* Allocate the encoder right now. */
337 if( i_ff_codec == 0 )
339 msg_Err( p_stream, "cannot find encoder" );
343 id->ff_enc = avcodec_find_encoder( i_ff_codec );
346 msg_Err( p_stream, "cannot find encoder (avcodec)" );
350 id->ff_enc_c = avcodec_alloc_context();
352 /* Set CPU capabilities */
353 unsigned i_cpu = vlc_CPU();
354 id->ff_enc_c->dsp_mask = 0;
355 if( !(i_cpu & CPU_CAPABILITY_MMX) )
357 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
359 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
361 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
363 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
365 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
367 if( !(i_cpu & CPU_CAPABILITY_SSE) )
369 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
370 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
373 id->ff_enc_c->sample_rate = p_fmt->audio.i_rate;
374 id->ff_enc_c->channels = p_fmt->audio.i_channels;
375 id->ff_enc_c->bit_rate = p_fmt->i_bitrate;
377 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
379 msg_Err( p_stream, "cannot open encoder" );
383 id->p_buffer_out = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 );
384 id->p_samples = malloc( id->ff_enc_c->frame_size
385 * p_fmt->audio.i_channels * sizeof(int16_t) );
386 memset( id->p_samples, 0,
387 id->ff_enc_c->frame_size * p_fmt->audio.i_channels
390 for ( i = 0; i < MAX_AUDIO; i++ )
392 if ( p_sys->pp_audio_ids[i] == NULL )
394 p_sys->pp_audio_ids[i] = id;
398 if ( i == MAX_AUDIO )
400 msg_Err( p_stream, "too many audio streams!" );
407 msg_Dbg( p_stream, "do not know what to do when switching (fcc=`%4.4s')",
408 (char*)&p_fmt->i_codec );
412 memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
414 /* open output stream */
415 id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
417 if ( id->id == NULL )
426 /*****************************************************************************
427 * Del: Del an elementary stream
428 *****************************************************************************/
429 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
431 sout_stream_sys_t *p_sys = p_stream->p_sys;
433 if ( id->b_switcher_audio )
436 for ( i = 0; i < MAX_AUDIO; i++ )
438 if ( p_sys->pp_audio_ids[i] == id )
440 p_sys->pp_audio_ids[i] = NULL;
448 avcodec_close( id->ff_enc_c );
449 av_free( id->ff_enc_c );
450 av_free( id->p_frame );
451 free( id->p_buffer_out );
456 p_sys->p_out->pf_del( p_sys->p_out, id->id );
463 /*****************************************************************************
464 * Send: Process an input packet
465 *****************************************************************************/
466 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
469 sout_stream_sys_t *p_sys = p_stream->p_sys;
473 block_Release( p_buffer );
477 if ( !id->b_switcher_video && !id->b_switcher_audio )
479 return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
482 block_ChainAppend( &id->p_queued, p_buffer );
484 if ( id->b_switcher_video )
486 /* Check for commands for every video frame. */
487 NetCommand( p_stream );
489 while ( id->p_queued != NULL )
494 if ( p_sys->i_old_cmd != p_sys->i_cmd )
496 i_dts = VideoCommand( p_stream, id );
499 i_dts = Process( p_stream, id, i_dts );
501 for ( i = 0; i < MAX_AUDIO; i++ )
503 if ( p_sys->pp_audio_ids[i] != NULL )
504 Process( p_stream, p_sys->pp_audio_ids[i], i_dts );
512 /*****************************************************************************
513 * Process: Process and dispatch buffers
514 *****************************************************************************/
515 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
518 sout_stream_sys_t *p_sys = p_stream->p_sys;
520 block_t *p_blocks = NULL;
521 block_t *p_blocks_out = NULL;
523 /* Find out the blocks we need. */
524 while ( id->p_queued != NULL
525 && (!i_max_dts || id->p_queued->i_dts <= i_max_dts) )
527 block_t *p_next = id->p_queued->p_next;
528 id->p_queued->p_next = NULL;
529 i_dts = id->p_queued->i_dts;
530 block_ChainAppend( &p_blocks, id->p_queued );
531 id->p_queued = p_next;
534 if ( p_sys->i_old_cmd == 0 )
537 if ( p_blocks != NULL )
538 p_sys->p_out->pf_send( p_sys->p_out, id->id, p_blocks );
542 if ( p_sys->i_old_cmd == -1 )
544 /* No output at all */
545 while ( p_blocks != NULL )
547 block_t * p_next = p_blocks->p_next;
548 block_Release( p_blocks );
554 while ( p_blocks != NULL )
556 block_t * p_next = p_blocks->p_next;
559 if ( id->b_switcher_video )
561 p_out = VideoGetBuffer( p_stream, id, p_blocks );
565 p_out = AudioGetBuffer( p_stream, id, p_blocks );
570 block_ChainAppend( &p_blocks_out, p_out );
574 if ( p_blocks_out != NULL )
575 p_sys->p_out->pf_send( p_sys->p_out, id->id, p_blocks_out );
579 /*****************************************************************************
580 * UnpackFromFile: Read a YUV picture and store it in our format
581 *****************************************************************************/
582 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
583 int i_width, int i_height,
587 FILE *p_file = utf8_fopen( psz_file, "r" );
589 if ( p_file == NULL )
591 msg_Err( p_stream, "file %s not found", psz_file );
595 vout_InitPicture( VLC_OBJECT(p_stream), p_pic, VLC_FOURCC('I','4','2','0'),
597 i_width * VOUT_ASPECT_FACTOR / i_height );
598 for ( i = 0; i < p_pic->i_planes; i++ )
600 p_pic->p[i].p_pixels = malloc( p_pic->p[i].i_lines *
601 p_pic->p[i].i_pitch );
602 memset( p_pic->p[i].p_pixels, 0, p_pic->p[i].i_lines *
603 p_pic->p[i].i_pitch );
606 for ( i = 0; i < i_height; i++ )
609 uint8_t p_buffer[i_width * 2];
610 uint8_t *p_char = p_buffer;
611 uint8_t *p_y = &p_pic->p[0].p_pixels[i * p_pic->p[0].i_pitch];
612 uint8_t *p_u = &p_pic->p[1].p_pixels[i/2 * p_pic->p[1].i_pitch];
613 uint8_t *p_v = &p_pic->p[2].p_pixels[i/2 * p_pic->p[2].i_pitch];
615 if ( fread( p_buffer, 2, i_width, p_file ) != (size_t)i_width )
617 msg_Err( p_stream, "premature end of file %s", psz_file );
619 for ( i = 0; i < p_pic->i_planes; i++ )
621 free( p_pic->p[i].p_pixels );
627 for ( j = 0; j < i_width; j++ )
629 uint8_t **pp_chroma = i_chroma ? &p_v : &p_u;
630 i_chroma = !i_chroma;
632 **pp_chroma = (**pp_chroma + *p_char + 1) / 2;
634 **pp_chroma = *p_char;
645 /*****************************************************************************
646 * NetCommand: Get a command from the network
647 *****************************************************************************/
648 static void NetCommand( sout_stream_t *p_stream )
650 sout_stream_sys_t *p_sys = p_stream->p_sys;
652 int i_len = recv( p_sys->i_fd, psz_buffer, sizeof( psz_buffer ) - 1, 0 );
656 psz_buffer[i_len] = '\0';
657 int i_cmd = strtol( psz_buffer, NULL, 0 );
658 if ( i_cmd < -1 || i_cmd > p_sys->i_nb_pictures )
660 msg_Err( p_stream, "got a wrong command (%d)", i_cmd );
664 p_sys->i_cmd = i_cmd;
666 msg_Dbg( p_stream, "new command: %d old:%d", p_sys->i_cmd,
671 /*****************************************************************************
672 * VideoCommand: Create/Delete a video encoder
673 *****************************************************************************/
674 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id )
676 sout_stream_sys_t *p_sys = p_stream->p_sys;
678 if ( p_sys->i_cmd == 0 && !(id->p_queued->i_flags & BLOCK_FLAG_TYPE_I) )
680 mtime_t i_dts = id->p_queued->i_dts;
681 block_t *p_block = id->p_queued->p_next;
683 while ( p_block != NULL )
685 if ( p_block->i_flags & BLOCK_FLAG_TYPE_I )
687 i_dts = p_block->i_dts;
688 p_block = p_block->p_next;
694 p_sys->i_old_cmd = p_sys->i_cmd;
698 avcodec_close( id->ff_enc_c );
699 av_free( id->ff_enc_c );
700 av_free( id->p_frame );
701 free( id->p_buffer_out );
705 if ( p_sys->i_cmd > 0 )
707 /* Create a new encoder. */
708 int i_ff_codec = CODEC_ID_MPEG2VIDEO;
709 int i_aspect_num, i_aspect_den;
711 if( i_ff_codec == 0 )
713 msg_Err( p_stream, "cannot find encoder" );
717 id->ff_enc = avcodec_find_encoder( i_ff_codec );
720 msg_Err( p_stream, "cannot find encoder (avcodec)" );
724 id->ff_enc_c = avcodec_alloc_context();
726 /* Set CPU capabilities */
727 unsigned i_cpu = vlc_CPU();
728 id->ff_enc_c->dsp_mask = 0;
729 if( !(i_cpu & CPU_CAPABILITY_MMX) )
731 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
733 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
735 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
737 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
739 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
741 if( !(i_cpu & CPU_CAPABILITY_SSE) )
743 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
744 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
747 id->ff_enc_c->width = p_sys->p_pictures[p_sys->i_cmd-1].format.i_width;
748 id->ff_enc_c->height = p_sys->p_pictures[p_sys->i_cmd-1].format.i_height;
749 av_reduce( &i_aspect_num, &i_aspect_den,
751 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
752 av_reduce( &id->ff_enc_c->sample_aspect_ratio.num,
753 &id->ff_enc_c->sample_aspect_ratio.den,
754 i_aspect_num * (int64_t)id->ff_enc_c->height,
755 i_aspect_den * (int64_t)id->ff_enc_c->width, 1 << 30 );
757 #if LIBAVCODEC_BUILD >= 4754
758 id->ff_enc_c->time_base.num = 1;
759 id->ff_enc_c->time_base.den = 25; /* FIXME */
761 id->ff_enc_c->frame_rate = 25; /* FIXME */
762 id->ff_enc_c->frame_rate_base = 1;
765 id->ff_enc_c->gop_size = 200;
766 id->ff_enc_c->max_b_frames = 0;
768 id->ff_enc_c->flags |= CODEC_FLAG_QSCALE
769 | CODEC_FLAG_INPUT_PRESERVED
770 | CODEC_FLAG_LOW_DELAY;
772 id->ff_enc_c->mb_decision = FF_MB_DECISION_SIMPLE;
773 id->ff_enc_c->pix_fmt = PIX_FMT_YUV420P;
775 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
777 msg_Err( p_stream, "cannot open encoder" );
781 id->p_buffer_out = malloc( id->ff_enc_c->width * id->ff_enc_c->height * 3 );
782 id->p_frame = avcodec_alloc_frame();
783 id->p_frame->linesize[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].i_pitch;
784 id->p_frame->linesize[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].i_pitch;
785 id->p_frame->linesize[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].i_pitch;
786 id->p_frame->data[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].p_pixels;
787 id->p_frame->data[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].p_pixels;
788 id->p_frame->data[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].p_pixels;
790 id->i_nb_pred = p_sys->i_gop;
796 /*****************************************************************************
797 * VideoGetBuffer: Build an alternate video buffer
798 *****************************************************************************/
799 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
802 sout_stream_sys_t *p_sys = p_stream->p_sys;
806 id->p_frame->quality = p_sys->i_qscale * powf(2.0, FF_LAMBDA_SHIFT + 7.0)
808 id->p_frame->interlaced_frame = 0;
809 id->p_frame->top_field_first = 1;
810 id->p_frame->pts = p_buffer->i_dts;
812 if ( id->i_nb_pred >= p_sys->i_gop )
814 id->p_frame->pict_type = FF_I_TYPE;
816 id->p_frame->me_threshold = 0;
817 id->p_frame->mb_threshold = 0;
823 id->p_frame->pict_type = FF_P_TYPE;
825 if ( id->p_frame->mb_type != NULL )
827 id->p_frame->me_threshold = MAX_THRESHOLD;
828 id->p_frame->mb_threshold = MAX_THRESHOLD;
834 i_out = avcodec_encode_video( id->ff_enc_c, id->p_buffer_out,
835 id->ff_enc_c->width * id->ff_enc_c->height * 3,
842 if ( id->p_frame->mb_type == NULL
843 && id->ff_enc_c->coded_frame->pict_type != FF_I_TYPE )
845 int mb_width = (id->ff_enc_c->width + 15) / 16;
846 int mb_height = (id->ff_enc_c->height + 15) / 16;
847 int h_chroma_shift, v_chroma_shift;
850 avcodec_get_chroma_sub_sample( id->ff_enc_c->pix_fmt, &h_chroma_shift,
853 id->p_frame->motion_subsample_log2
854 = id->ff_enc_c->coded_frame->motion_subsample_log2;
855 id->p_frame->mb_type = malloc( ((mb_width + 1) * (mb_height + 1) + 1)
856 * sizeof(uint32_t) );
857 p_stream->p_libvlc->pf_memcpy( id->p_frame->mb_type,
858 id->ff_enc_c->coded_frame->mb_type,
859 (mb_width + 1) * mb_height
860 * sizeof(id->p_frame->mb_type[0]));
862 for ( i = 0; i < 2; i++ )
864 int stride = ((16 * mb_width )
865 >> id->ff_enc_c->coded_frame->motion_subsample_log2) + 1;
866 int height = ((16 * mb_height)
867 >> id->ff_enc_c->coded_frame->motion_subsample_log2);
868 int b8_stride = mb_width * 2 + 1;
870 if ( id->ff_enc_c->coded_frame->motion_val[i] )
872 id->p_frame->motion_val[i] = malloc( 2 * stride * height
874 p_stream->p_libvlc->pf_memcpy( id->p_frame->motion_val[i],
875 id->ff_enc_c->coded_frame->motion_val[i],
876 2 * stride * height * sizeof(int16_t) );
878 if ( id->ff_enc_c->coded_frame->ref_index[i] )
880 id->p_frame->ref_index[i] = malloc( b8_stride * 2 * mb_height
882 p_stream->p_libvlc->pf_memcpy( id->p_frame->ref_index[i],
883 id->ff_enc_c->coded_frame->ref_index[i],
884 b8_stride * 2 * mb_height * sizeof(int8_t));
890 p_out = block_New( p_stream, i_out );
891 p_stream->p_libvlc->pf_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
892 p_out->i_length = p_buffer->i_length;
893 p_out->i_pts = p_buffer->i_dts;
894 p_out->i_dts = p_buffer->i_dts;
895 p_out->i_rate = p_buffer->i_rate;
897 switch ( id->ff_enc_c->coded_frame->pict_type )
900 p_out->i_flags |= BLOCK_FLAG_TYPE_I;
903 p_out->i_flags |= BLOCK_FLAG_TYPE_P;
906 p_out->i_flags |= BLOCK_FLAG_TYPE_B;
912 block_Release( p_buffer );
917 /*****************************************************************************
918 * AudioGetBuffer: Build an alternate audio buffer
919 *****************************************************************************/
920 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
926 i_out = avcodec_encode_audio( id->ff_enc_c, id->p_buffer_out,
927 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
933 p_out = block_New( p_stream, i_out );
934 p_stream->p_libvlc->pf_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
935 p_out->i_length = p_buffer->i_length;
936 p_out->i_pts = p_buffer->i_dts;
937 p_out->i_dts = p_buffer->i_dts;
938 p_out->i_rate = p_buffer->i_rate;
940 block_Release( p_buffer );