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_common.h>
34 #include <vlc_plugin.h>
36 #include <vlc_avcodec.h>
37 #include <vlc_filter.h>
40 #include <vlc_block.h>
43 #include <vlc_network.h>
46 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
47 # include <libavcodec/avcodec.h>
48 #elif defined(HAVE_FFMPEG_AVCODEC_H)
49 # include <ffmpeg/avcodec.h>
54 #ifdef HAVE_POSTPROC_POSTPROCESS_H
55 # include <postproc/postprocess.h>
57 # include <libpostproc/postprocess.h>
60 #define SOUT_CFG_PREFIX "sout-switcher-"
61 #define MAX_PICTURES 10
63 #define MAX_THRESHOLD 99999999
65 /*****************************************************************************
67 *****************************************************************************/
68 static int Open ( vlc_object_t * );
69 static void Close ( vlc_object_t * );
71 static sout_stream_id_t *Add( sout_stream_t *, es_format_t * );
72 static int Del( sout_stream_t *, sout_stream_id_t * );
73 static int Send( sout_stream_t *, sout_stream_id_t *, block_t * );
75 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
77 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
78 int i_width, int i_height,
80 static void NetCommand( sout_stream_t *p_stream );
81 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id );
82 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
84 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
87 /*****************************************************************************
89 *****************************************************************************/
90 #define FILES_TEXT N_("Files")
91 #define FILES_LONGTEXT N_( \
92 "Full paths of the files separated by colons." )
93 #define SIZES_TEXT N_("Sizes")
94 #define SIZES_LONGTEXT N_( \
95 "List of sizes separated by colons (720x576:480x576)." )
96 #define RATIO_TEXT N_("Aspect ratio")
97 #define RATIO_LONGTEXT N_( \
98 "Aspect ratio (4:3, 16:9)." )
99 #define PORT_TEXT N_("Command UDP port")
100 #define PORT_LONGTEXT N_( \
101 "UDP port to listen to for commands." )
102 #define COMMAND_TEXT N_("Command")
103 #define COMMAND_LONGTEXT N_( \
104 "Initial command to execute." )
105 #define GOP_TEXT N_("GOP size")
106 #define GOP_LONGTEXT N_( \
107 "Number of P frames between two I frames." )
108 #define QSCALE_TEXT N_("Quantizer scale")
109 #define QSCALE_LONGTEXT N_( \
110 "Fixed quantizer scale to use." )
111 #define AUDIO_TEXT N_("Mute audio")
112 #define AUDIO_LONGTEXT N_( \
113 "Mute audio when command is not 0." )
116 set_description( N_("MPEG2 video switcher stream output") )
117 set_capability( "sout stream", 50 )
118 add_shortcut( "switcher" )
119 set_callbacks( Open, Close )
121 add_string( SOUT_CFG_PREFIX "files", "", FILES_TEXT,
122 FILES_LONGTEXT, false )
123 add_string( SOUT_CFG_PREFIX "sizes", "", SIZES_TEXT,
124 SIZES_LONGTEXT, false )
125 add_string( SOUT_CFG_PREFIX "aspect-ratio", "4:3", RATIO_TEXT,
126 RATIO_LONGTEXT, false )
127 add_integer( SOUT_CFG_PREFIX "port", 5001,
128 PORT_TEXT, PORT_LONGTEXT, true )
129 add_integer( SOUT_CFG_PREFIX "command", 0,
130 COMMAND_TEXT, COMMAND_LONGTEXT, true )
131 add_integer( SOUT_CFG_PREFIX "gop", 8,
132 GOP_TEXT, GOP_LONGTEXT, true )
133 add_integer( SOUT_CFG_PREFIX "qscale", 5,
134 QSCALE_TEXT, QSCALE_LONGTEXT, true )
135 add_bool( SOUT_CFG_PREFIX "mute-audio", true,
136 AUDIO_TEXT, AUDIO_LONGTEXT, true )
139 static const char *const ppsz_sout_options[] = {
140 "files", "sizes", "aspect-ratio", "port", "command", "gop", "qscale",
144 struct sout_stream_sys_t
149 sout_stream_id_t *pp_audio_ids[MAX_AUDIO];
153 picture_t p_pictures[MAX_PICTURES];
158 int i_cmd, i_old_cmd;
161 struct sout_stream_id_t
164 bool b_switcher_video;
165 bool b_switcher_audio;
171 AVCodecContext *ff_enc_c;
173 uint8_t *p_buffer_out;
178 /*****************************************************************************
180 *****************************************************************************/
181 static int Open( vlc_object_t *p_this )
183 sout_stream_t *p_stream = (sout_stream_t*)p_this;
184 sout_stream_sys_t *p_sys;
186 char *psz_files, *psz_sizes;
187 int i_height = 0, i_width = 0;
189 p_sys = calloc( 1, sizeof(sout_stream_sys_t) );
193 if( !p_stream->p_next )
195 msg_Err( p_stream, "cannot create chain" );
200 config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
203 var_Get( p_stream, SOUT_CFG_PREFIX "files", &val );
204 psz_files = val.psz_string;
205 var_Get( p_stream, SOUT_CFG_PREFIX "sizes", &val );
206 psz_sizes = val.psz_string;
208 p_sys->i_nb_pictures = 0;
209 while ( psz_files && *psz_files )
211 char * psz_file = psz_files;
212 char * psz_size = psz_sizes;
214 while ( *psz_files && *psz_files != ':' )
216 if ( *psz_files == ':' )
221 while ( *psz_sizes && *psz_sizes != ':' )
223 if ( *psz_sizes == ':' )
225 if ( sscanf( psz_size, "%dx%d", &i_width, &i_height ) != 2 )
227 msg_Err( p_stream, "bad size %s for file %s", psz_size,
234 if ( UnpackFromFile( p_stream, psz_file, i_width, i_height,
235 &p_sys->p_pictures[p_sys->i_nb_pictures] ) < 0 )
240 p_sys->i_nb_pictures++;
243 var_Get( p_stream, SOUT_CFG_PREFIX "aspect-ratio", &val );
244 if ( val.psz_string )
246 char *psz_parser = strchr( val.psz_string, ':' );
250 *psz_parser++ = '\0';
251 p_sys->i_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
252 / atoi( psz_parser );
256 msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
257 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
260 free( val.psz_string );
264 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
267 var_Get( p_stream, SOUT_CFG_PREFIX "port", &val );
268 p_sys->i_fd = net_ListenUDP1( VLC_OBJECT(p_stream), NULL, val.i_int );
269 if ( p_sys->i_fd < 0 )
275 var_Get( p_stream, SOUT_CFG_PREFIX "command", &val );
276 p_sys->i_cmd = val.i_int;
277 p_sys->i_old_cmd = 0;
279 var_Get( p_stream, SOUT_CFG_PREFIX "gop", &val );
280 p_sys->i_gop = val.i_int;
282 var_Get( p_stream, SOUT_CFG_PREFIX "qscale", &val );
283 p_sys->i_qscale = val.i_int;
285 var_Get( p_stream, SOUT_CFG_PREFIX "mute-audio", &val );
286 p_sys->b_audio = val.b_bool;
288 p_stream->pf_add = Add;
289 p_stream->pf_del = Del;
290 p_stream->pf_send = Send;
291 p_stream->p_sys = p_sys;
294 avcodec_register_all();
299 /*****************************************************************************
301 *****************************************************************************/
302 static void Close( vlc_object_t * p_this )
304 sout_stream_t *p_stream = (sout_stream_t *)p_this;
305 sout_stream_sys_t *p_sys = p_stream->p_sys;
310 /*****************************************************************************
311 * Add: Add an input elementary stream
312 *****************************************************************************/
313 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
315 sout_stream_sys_t *p_sys = p_stream->p_sys;
316 sout_stream_id_t *id;
318 id = calloc( 1, sizeof( sout_stream_id_t ) );
322 if( p_fmt->i_cat == VIDEO_ES && p_fmt->i_codec == VLC_CODEC_MPGV )
324 id->b_switcher_video = true;
325 p_fmt->i_codec = VLC_CODEC_MPGV;
326 msg_Dbg( p_stream, "creating video switcher for fcc=`%4.4s' cmd:%d",
327 (char*)&p_fmt->i_codec, p_sys->i_cmd );
329 else if ( p_fmt->i_cat == AUDIO_ES &&
330 p_fmt->i_codec == VLC_CODEC_MPGA &&
333 int i_ff_codec = CODEC_ID_MP2;
336 id->b_switcher_audio = true;
337 msg_Dbg( p_stream, "creating audio switcher for fcc=`%4.4s' cmd:%d",
338 (char*)&p_fmt->i_codec, p_sys->i_cmd );
340 /* Allocate the encoder right now. */
341 if( i_ff_codec == 0 )
343 msg_Err( p_stream, "cannot find encoder" );
348 id->ff_enc = avcodec_find_encoder( i_ff_codec );
351 msg_Err( p_stream, "cannot find encoder (avcodec)" );
356 id->ff_enc_c = avcodec_alloc_context();
358 /* Set CPU capabilities */
359 unsigned i_cpu = vlc_CPU();
360 id->ff_enc_c->dsp_mask = 0;
361 if( !(i_cpu & CPU_CAPABILITY_MMX) )
363 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
365 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
367 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
369 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
371 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
373 if( !(i_cpu & CPU_CAPABILITY_SSE) )
375 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
376 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
379 id->ff_enc_c->sample_rate = p_fmt->audio.i_rate;
380 id->ff_enc_c->channels = p_fmt->audio.i_channels;
381 id->ff_enc_c->bit_rate = p_fmt->i_bitrate;
384 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
386 vlc_avcodec_unlock();
387 msg_Err( p_stream, "cannot open encoder" );
388 av_free( id->ff_enc_c );
392 vlc_avcodec_unlock();
394 id->p_buffer_out = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 );
395 id->p_samples = calloc( id->ff_enc_c->frame_size * p_fmt->audio.i_channels,
397 if( !id->p_buffer_out || !id->p_samples )
400 for( i = 0; i < MAX_AUDIO; i++ )
402 if( p_sys->pp_audio_ids[i] == NULL )
404 p_sys->pp_audio_ids[i] = id;
410 msg_Err( p_stream, "too many audio streams!" );
416 msg_Dbg( p_stream, "do not know what to do when switching (fcc=`%4.4s')",
417 (char*)&p_fmt->i_codec );
421 memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
423 /* open output stream */
424 id->id = p_stream->p_next->pf_add( p_stream->p_next, p_fmt );
431 avcodec_close( id->ff_enc_c );
432 vlc_avcodec_unlock();
433 free( id->p_samples );
434 free( id->p_buffer_out );
435 av_free( id->ff_enc_c );
440 /*****************************************************************************
441 * Del: Del an elementary stream
442 *****************************************************************************/
443 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
445 sout_stream_sys_t *p_sys = p_stream->p_sys;
447 if ( id->b_switcher_audio )
450 for ( i = 0; i < MAX_AUDIO; i++ )
452 if ( p_sys->pp_audio_ids[i] == id )
454 p_sys->pp_audio_ids[i] = NULL;
463 avcodec_close( id->ff_enc_c );
464 vlc_avcodec_unlock();
465 av_free( id->ff_enc_c );
466 av_free( id->p_frame );
467 free( id->p_buffer_out );
472 p_stream->p_next->pf_del( p_stream->p_next, id->id );
479 /*****************************************************************************
480 * Send: Process an input packet
481 *****************************************************************************/
482 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
485 sout_stream_sys_t *p_sys = p_stream->p_sys;
489 block_Release( p_buffer );
493 if ( !id->b_switcher_video && !id->b_switcher_audio )
495 return p_stream->p_next->pf_send( p_stream->p_next, id->id, p_buffer );
498 block_ChainAppend( &id->p_queued, p_buffer );
500 if ( id->b_switcher_video )
502 /* Check for commands for every video frame. */
503 NetCommand( p_stream );
505 while ( id->p_queued != NULL )
510 if ( p_sys->i_old_cmd != p_sys->i_cmd )
512 i_dts = VideoCommand( p_stream, id );
515 i_dts = Process( p_stream, id, i_dts );
517 for ( i = 0; i < MAX_AUDIO; i++ )
519 if ( p_sys->pp_audio_ids[i] != NULL )
520 Process( p_stream, p_sys->pp_audio_ids[i], i_dts );
528 /*****************************************************************************
529 * Process: Process and dispatch buffers
530 *****************************************************************************/
531 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
534 sout_stream_sys_t *p_sys = p_stream->p_sys;
536 block_t *p_blocks = NULL;
537 block_t *p_blocks_out = NULL;
539 /* Find out the blocks we need. */
540 while ( id->p_queued != NULL
541 && (!i_max_dts || id->p_queued->i_dts <= i_max_dts) )
543 block_t *p_next = id->p_queued->p_next;
544 id->p_queued->p_next = NULL;
545 i_dts = id->p_queued->i_dts;
546 block_ChainAppend( &p_blocks, id->p_queued );
547 id->p_queued = p_next;
550 if ( p_sys->i_old_cmd == 0 )
553 if ( p_blocks != NULL )
554 p_stream->p_next->pf_send( p_stream->p_next, id->id, p_blocks );
558 if ( p_sys->i_old_cmd == -1 )
560 /* No output at all */
561 while ( p_blocks != NULL )
563 block_t * p_next = p_blocks->p_next;
564 block_Release( p_blocks );
570 while ( p_blocks != NULL )
572 block_t * p_next = p_blocks->p_next;
575 if ( id->b_switcher_video )
577 p_out = VideoGetBuffer( p_stream, id, p_blocks );
581 p_out = AudioGetBuffer( p_stream, id, p_blocks );
586 block_ChainAppend( &p_blocks_out, p_out );
590 if ( p_blocks_out != NULL )
591 p_stream->p_next->pf_send( p_stream->p_next, id->id, p_blocks_out );
595 /*****************************************************************************
596 * UnpackFromFile: Read a YUV picture and store it in our format
597 *****************************************************************************/
598 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
599 int i_width, int i_height,
603 FILE *p_file = vlc_fopen( psz_file, "r" );
605 if ( p_file == NULL )
607 msg_Err( p_stream, "file %s not found", psz_file );
611 if( picture_Setup( p_pic, VLC_CODEC_I420,
612 i_width, i_height, 1, 1 ) )
614 msg_Err( p_stream, "unknown chroma" );
617 for ( i = 0; i < p_pic->i_planes; i++ )
619 p_pic->p[i].p_pixels = malloc( p_pic->p[i].i_lines *
620 p_pic->p[i].i_pitch );
621 memset( p_pic->p[i].p_pixels, 0, p_pic->p[i].i_lines *
622 p_pic->p[i].i_pitch );
625 for ( i = 0; i < i_height; i++ )
628 uint8_t p_buffer[i_width * 2];
629 uint8_t *p_char = p_buffer;
630 uint8_t *p_y = &p_pic->p[0].p_pixels[i * p_pic->p[0].i_pitch];
631 uint8_t *p_u = &p_pic->p[1].p_pixels[i/2 * p_pic->p[1].i_pitch];
632 uint8_t *p_v = &p_pic->p[2].p_pixels[i/2 * p_pic->p[2].i_pitch];
634 if ( fread( p_buffer, 2, i_width, p_file ) != (size_t)i_width )
636 msg_Err( p_stream, "premature end of file %s", psz_file );
638 for ( i = 0; i < p_pic->i_planes; i++ )
640 free( p_pic->p[i].p_pixels );
646 for ( j = 0; j < i_width; j++ )
648 uint8_t **pp_chroma = i_chroma ? &p_v : &p_u;
649 i_chroma = !i_chroma;
651 **pp_chroma = (**pp_chroma + *p_char + 1) / 2;
653 **pp_chroma = *p_char;
664 /*****************************************************************************
665 * NetCommand: Get a command from the network
666 *****************************************************************************/
667 static void NetCommand( sout_stream_t *p_stream )
669 sout_stream_sys_t *p_sys = p_stream->p_sys;
671 int i_len = recv( p_sys->i_fd, psz_buffer, sizeof( psz_buffer ) - 1, 0 );
675 psz_buffer[i_len] = '\0';
676 int i_cmd = strtol( psz_buffer, NULL, 0 );
677 if ( i_cmd < -1 || i_cmd > p_sys->i_nb_pictures )
679 msg_Err( p_stream, "got a wrong command (%d)", i_cmd );
683 p_sys->i_cmd = i_cmd;
685 msg_Dbg( p_stream, "new command: %d old:%d", p_sys->i_cmd,
690 /*****************************************************************************
691 * VideoCommand: Create/Delete a video encoder
692 *****************************************************************************/
693 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id )
695 sout_stream_sys_t *p_sys = p_stream->p_sys;
697 if ( p_sys->i_cmd == 0 && !(id->p_queued->i_flags & BLOCK_FLAG_TYPE_I) )
699 mtime_t i_dts = id->p_queued->i_dts;
700 block_t *p_block = id->p_queued->p_next;
702 while ( p_block != NULL )
704 if ( p_block->i_flags & BLOCK_FLAG_TYPE_I )
706 i_dts = p_block->i_dts;
707 p_block = p_block->p_next;
713 p_sys->i_old_cmd = p_sys->i_cmd;
718 avcodec_close( id->ff_enc_c );
719 vlc_avcodec_unlock();
720 av_free( id->ff_enc_c );
721 av_free( id->p_frame );
722 free( id->p_buffer_out );
726 if ( p_sys->i_cmd > 0 )
728 /* Create a new encoder. */
729 int i_ff_codec = CODEC_ID_MPEG2VIDEO;
730 int i_aspect_num, i_aspect_den;
732 if( i_ff_codec == 0 )
734 msg_Err( p_stream, "cannot find encoder" );
738 id->ff_enc = avcodec_find_encoder( i_ff_codec );
741 msg_Err( p_stream, "cannot find encoder (avcodec)" );
745 id->ff_enc_c = avcodec_alloc_context();
747 /* Set CPU capabilities */
748 unsigned i_cpu = vlc_CPU();
749 id->ff_enc_c->dsp_mask = 0;
750 if( !(i_cpu & CPU_CAPABILITY_MMX) )
752 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
754 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
756 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
758 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
760 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
762 if( !(i_cpu & CPU_CAPABILITY_SSE) )
764 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
765 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
768 id->ff_enc_c->width = p_sys->p_pictures[p_sys->i_cmd-1].format.i_width;
769 id->ff_enc_c->height = p_sys->p_pictures[p_sys->i_cmd-1].format.i_height;
770 av_reduce( &i_aspect_num, &i_aspect_den,
772 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
773 av_reduce( &id->ff_enc_c->sample_aspect_ratio.num,
774 &id->ff_enc_c->sample_aspect_ratio.den,
775 i_aspect_num * (int64_t)id->ff_enc_c->height,
776 i_aspect_den * (int64_t)id->ff_enc_c->width, 1 << 30 );
778 #if LIBAVCODEC_BUILD >= 4754
779 id->ff_enc_c->time_base.num = 1;
780 id->ff_enc_c->time_base.den = 25; /* FIXME */
782 id->ff_enc_c->frame_rate = 25; /* FIXME */
783 id->ff_enc_c->frame_rate_base = 1;
786 id->ff_enc_c->gop_size = 200;
787 id->ff_enc_c->max_b_frames = 0;
789 id->ff_enc_c->flags |= CODEC_FLAG_QSCALE
790 | CODEC_FLAG_INPUT_PRESERVED
791 | CODEC_FLAG_LOW_DELAY;
793 id->ff_enc_c->mb_decision = FF_MB_DECISION_SIMPLE;
794 id->ff_enc_c->pix_fmt = PIX_FMT_YUV420P;
797 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
799 vlc_avcodec_unlock();
800 msg_Err( p_stream, "cannot open encoder" );
803 vlc_avcodec_unlock();
805 id->p_buffer_out = malloc( id->ff_enc_c->width * id->ff_enc_c->height * 3 );
806 id->p_frame = avcodec_alloc_frame();
807 id->p_frame->linesize[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].i_pitch;
808 id->p_frame->linesize[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].i_pitch;
809 id->p_frame->linesize[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].i_pitch;
810 id->p_frame->data[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].p_pixels;
811 id->p_frame->data[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].p_pixels;
812 id->p_frame->data[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].p_pixels;
814 id->i_nb_pred = p_sys->i_gop;
820 /*****************************************************************************
821 * VideoGetBuffer: Build an alternate video buffer
822 *****************************************************************************/
823 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
826 sout_stream_sys_t *p_sys = p_stream->p_sys;
830 id->p_frame->quality = p_sys->i_qscale * powf(2.0, FF_LAMBDA_SHIFT + 7.0)
832 id->p_frame->interlaced_frame = 0;
833 id->p_frame->top_field_first = 1;
834 id->p_frame->pts = p_buffer->i_dts;
836 if ( id->i_nb_pred >= p_sys->i_gop )
838 id->p_frame->pict_type = FF_I_TYPE;
840 id->p_frame->me_threshold = 0;
841 id->p_frame->mb_threshold = 0;
847 id->p_frame->pict_type = FF_P_TYPE;
849 if ( id->p_frame->mb_type != NULL )
851 id->p_frame->me_threshold = MAX_THRESHOLD;
852 id->p_frame->mb_threshold = MAX_THRESHOLD;
858 i_out = avcodec_encode_video( id->ff_enc_c, id->p_buffer_out,
859 id->ff_enc_c->width * id->ff_enc_c->height * 3,
866 if ( id->p_frame->mb_type == NULL
867 && id->ff_enc_c->coded_frame->pict_type != FF_I_TYPE )
869 int mb_width = (id->ff_enc_c->width + 15) / 16;
870 int mb_height = (id->ff_enc_c->height + 15) / 16;
871 int h_chroma_shift, v_chroma_shift;
874 avcodec_get_chroma_sub_sample( id->ff_enc_c->pix_fmt, &h_chroma_shift,
877 id->p_frame->motion_subsample_log2
878 = id->ff_enc_c->coded_frame->motion_subsample_log2;
879 id->p_frame->mb_type = malloc( ((mb_width + 1) * (mb_height + 1) + 1)
880 * sizeof(uint32_t) );
881 vlc_memcpy( id->p_frame->mb_type, id->ff_enc_c->coded_frame->mb_type,
882 (mb_width + 1) * mb_height * sizeof(id->p_frame->mb_type[0]));
884 for ( i = 0; i < 2; i++ )
886 int stride = ((16 * mb_width )
887 >> id->ff_enc_c->coded_frame->motion_subsample_log2) + 1;
888 int height = ((16 * mb_height)
889 >> id->ff_enc_c->coded_frame->motion_subsample_log2);
890 int b8_stride = mb_width * 2 + 1;
892 if ( id->ff_enc_c->coded_frame->motion_val[i] )
894 id->p_frame->motion_val[i] = malloc( 2 * stride * height
896 vlc_memcpy( id->p_frame->motion_val[i],
897 id->ff_enc_c->coded_frame->motion_val[i],
898 2 * stride * height * sizeof(int16_t) );
900 if ( id->ff_enc_c->coded_frame->ref_index[i] )
902 id->p_frame->ref_index[i] = malloc( b8_stride * 2 * mb_height
904 vlc_memcpy( id->p_frame->ref_index[i],
905 id->ff_enc_c->coded_frame->ref_index[i],
906 b8_stride * 2 * mb_height * sizeof(int8_t));
912 p_out = block_New( p_stream, i_out );
913 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
914 p_out->i_length = p_buffer->i_length;
915 p_out->i_pts = p_buffer->i_dts;
916 p_out->i_dts = p_buffer->i_dts;
918 switch ( id->ff_enc_c->coded_frame->pict_type )
921 p_out->i_flags |= BLOCK_FLAG_TYPE_I;
924 p_out->i_flags |= BLOCK_FLAG_TYPE_P;
927 p_out->i_flags |= BLOCK_FLAG_TYPE_B;
933 block_Release( p_buffer );
938 /*****************************************************************************
939 * AudioGetBuffer: Build an alternate audio buffer
940 *****************************************************************************/
941 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
948 i_out = avcodec_encode_audio( id->ff_enc_c, id->p_buffer_out,
949 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
955 p_out = block_New( p_stream, i_out );
956 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
957 p_out->i_length = p_buffer->i_length;
958 p_out->i_pts = p_buffer->i_dts;
959 p_out->i_dts = p_buffer->i_dts;
961 block_Release( p_buffer );