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>
38 #include <vlc_charset.h>
39 #include <vlc_network.h>
42 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
43 # include <libavcodec/avcodec.h>
44 #elif defined(HAVE_FFMPEG_AVCODEC_H)
45 # include <ffmpeg/avcodec.h>
50 #ifdef HAVE_POSTPROC_POSTPROCESS_H
51 # include <postproc/postprocess.h>
53 # include <libpostproc/postprocess.h>
56 #define SOUT_CFG_PREFIX "sout-switcher-"
57 #define MAX_PICTURES 10
59 #define MAX_THRESHOLD 99999999
61 /*****************************************************************************
63 *****************************************************************************/
64 static int Open ( vlc_object_t * );
65 static void Close ( vlc_object_t * );
67 static sout_stream_id_t *Add( sout_stream_t *, es_format_t * );
68 static int Del( sout_stream_t *, sout_stream_id_t * );
69 static int Send( sout_stream_t *, sout_stream_id_t *, block_t * );
71 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
73 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
74 int i_width, int i_height,
76 static void NetCommand( sout_stream_t *p_stream );
77 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id );
78 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
80 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
83 /*****************************************************************************
85 *****************************************************************************/
86 #define FILES_TEXT N_("Files")
87 #define FILES_LONGTEXT N_( \
88 "Full paths of the files separated by colons." )
89 #define SIZES_TEXT N_("Sizes")
90 #define SIZES_LONGTEXT N_( \
91 "List of sizes separated by colons (720x576:480x576)." )
92 #define RATIO_TEXT N_("Aspect ratio")
93 #define RATIO_LONGTEXT N_( \
94 "Aspect ratio (4:3, 16:9)." )
95 #define PORT_TEXT N_("Command UDP port")
96 #define PORT_LONGTEXT N_( \
97 "UDP port to listen to for commands." )
98 #define COMMAND_TEXT N_("Command")
99 #define COMMAND_LONGTEXT N_( \
100 "Initial command to execute." )
101 #define GOP_TEXT N_("GOP size")
102 #define GOP_LONGTEXT N_( \
103 "Number of P frames between two I frames." )
104 #define QSCALE_TEXT N_("Quantizer scale")
105 #define QSCALE_LONGTEXT N_( \
106 "Fixed quantizer scale to use." )
107 #define AUDIO_TEXT N_("Mute audio")
108 #define AUDIO_LONGTEXT N_( \
109 "Mute audio when command is not 0." )
112 set_description( N_("MPEG2 video switcher stream output") );
113 set_capability( "sout stream", 50 );
114 add_shortcut( "switcher" );
115 set_callbacks( Open, Close );
117 add_string( SOUT_CFG_PREFIX "files", "", NULL, FILES_TEXT,
118 FILES_LONGTEXT, false );
119 add_string( SOUT_CFG_PREFIX "sizes", "", NULL, SIZES_TEXT,
120 SIZES_LONGTEXT, false );
121 add_string( SOUT_CFG_PREFIX "aspect-ratio", "4:3", NULL, RATIO_TEXT,
122 RATIO_LONGTEXT, false );
123 add_integer( SOUT_CFG_PREFIX "port", 5001, NULL,
124 PORT_TEXT, PORT_LONGTEXT, true );
125 add_integer( SOUT_CFG_PREFIX "command", 0, NULL,
126 COMMAND_TEXT, COMMAND_LONGTEXT, true );
127 add_integer( SOUT_CFG_PREFIX "gop", 8, NULL,
128 GOP_TEXT, GOP_LONGTEXT, true );
129 add_integer( SOUT_CFG_PREFIX "qscale", 5, NULL,
130 QSCALE_TEXT, QSCALE_LONGTEXT, true );
131 add_bool( SOUT_CFG_PREFIX "mute-audio", 1, NULL,
132 AUDIO_TEXT, AUDIO_LONGTEXT, true );
135 static const char *const ppsz_sout_options[] = {
136 "files", "sizes", "aspect-ratio", "port", "command", "gop", "qscale",
140 struct sout_stream_sys_t
142 sout_stream_t *p_out;
146 sout_stream_id_t *pp_audio_ids[MAX_AUDIO];
150 picture_t p_pictures[MAX_PICTURES];
155 int i_cmd, i_old_cmd;
158 struct sout_stream_id_t
161 bool b_switcher_video;
162 bool b_switcher_audio;
168 AVCodecContext *ff_enc_c;
170 uint8_t *p_buffer_out;
175 /*****************************************************************************
177 *****************************************************************************/
178 static int Open( vlc_object_t *p_this )
180 sout_stream_t *p_stream = (sout_stream_t*)p_this;
181 sout_stream_sys_t *p_sys;
183 char *psz_files, *psz_sizes;
184 int i_height = 0, i_width = 0;
186 p_sys = malloc( sizeof(sout_stream_sys_t) );
187 memset( p_sys, 0, sizeof(sout_stream_sys_t) );
189 p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
192 msg_Err( p_stream, "cannot create chain" );
197 config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
200 var_Get( p_stream, SOUT_CFG_PREFIX "files", &val );
201 psz_files = val.psz_string;
202 var_Get( p_stream, SOUT_CFG_PREFIX "sizes", &val );
203 psz_sizes = val.psz_string;
205 p_sys->i_nb_pictures = 0;
206 while ( psz_files && *psz_files )
208 char * psz_file = psz_files;
209 char * psz_size = psz_sizes;
211 while ( *psz_files && *psz_files != ':' )
213 if ( *psz_files == ':' )
218 while ( *psz_sizes && *psz_sizes != ':' )
220 if ( *psz_sizes == ':' )
222 if ( sscanf( psz_size, "%dx%d", &i_width, &i_height ) != 2 )
224 msg_Err( p_stream, "bad size %s for file %s", psz_size,
231 if ( UnpackFromFile( p_stream, psz_file, i_width, i_height,
232 &p_sys->p_pictures[p_sys->i_nb_pictures] ) < 0 )
237 p_sys->i_nb_pictures++;
240 var_Get( p_stream, SOUT_CFG_PREFIX "aspect-ratio", &val );
241 if ( val.psz_string )
243 char *psz_parser = strchr( val.psz_string, ':' );
247 *psz_parser++ = '\0';
248 p_sys->i_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
249 / atoi( psz_parser );
253 msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
254 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
257 free( val.psz_string );
261 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
264 var_Get( p_stream, SOUT_CFG_PREFIX "port", &val );
265 p_sys->i_fd = net_ListenUDP1( p_stream, NULL, val.i_int );
266 if ( p_sys->i_fd < 0 )
272 var_Get( p_stream, SOUT_CFG_PREFIX "command", &val );
273 p_sys->i_cmd = val.i_int;
274 p_sys->i_old_cmd = 0;
276 var_Get( p_stream, SOUT_CFG_PREFIX "gop", &val );
277 p_sys->i_gop = val.i_int;
279 var_Get( p_stream, SOUT_CFG_PREFIX "qscale", &val );
280 p_sys->i_qscale = val.i_int;
282 var_Get( p_stream, SOUT_CFG_PREFIX "mute-audio", &val );
283 p_sys->b_audio = val.b_bool;
285 p_stream->pf_add = Add;
286 p_stream->pf_del = Del;
287 p_stream->pf_send = Send;
288 p_stream->p_sys = p_sys;
291 avcodec_register_all();
296 /*****************************************************************************
298 *****************************************************************************/
299 static void Close( vlc_object_t * p_this )
301 sout_stream_t *p_stream = (sout_stream_t *)p_this;
302 sout_stream_sys_t *p_sys = p_stream->p_sys;
304 sout_StreamDelete( p_sys->p_out );
309 /*****************************************************************************
310 * Add: Add an input elementary stream
311 *****************************************************************************/
312 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
314 sout_stream_sys_t *p_sys = p_stream->p_sys;
315 sout_stream_id_t *id;
317 id = malloc( sizeof( sout_stream_id_t ) );
318 memset( id, 0, sizeof( sout_stream_id_t ) );
321 if ( p_fmt->i_cat == VIDEO_ES
322 && (p_fmt->i_codec == VLC_FOURCC('m', 'p', 'g', 'v')
323 || p_fmt->i_codec == VLC_FOURCC('f', 'a', 'k', 'e')) )
325 id->b_switcher_video = true;
326 p_fmt->i_codec = VLC_FOURCC('m', 'p', 'g', 'v');
328 "creating video switcher for fcc=`%4.4s' cmd:%d",
329 (char*)&p_fmt->i_codec, p_sys->i_cmd );
331 else if ( p_fmt->i_cat == AUDIO_ES
332 && p_fmt->i_codec == VLC_FOURCC('m', 'p', 'g', 'a')
335 int i_ff_codec = CODEC_ID_MP2;
338 id->b_switcher_audio = true;
340 "creating audio switcher for fcc=`%4.4s' cmd:%d",
341 (char*)&p_fmt->i_codec, p_sys->i_cmd );
343 /* Allocate the encoder right now. */
344 if( i_ff_codec == 0 )
346 msg_Err( p_stream, "cannot find encoder" );
350 id->ff_enc = avcodec_find_encoder( i_ff_codec );
353 msg_Err( p_stream, "cannot find encoder (avcodec)" );
357 id->ff_enc_c = avcodec_alloc_context();
359 /* Set CPU capabilities */
360 unsigned i_cpu = vlc_CPU();
361 id->ff_enc_c->dsp_mask = 0;
362 if( !(i_cpu & CPU_CAPABILITY_MMX) )
364 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
366 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
368 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
370 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
372 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
374 if( !(i_cpu & CPU_CAPABILITY_SSE) )
376 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
377 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
380 id->ff_enc_c->sample_rate = p_fmt->audio.i_rate;
381 id->ff_enc_c->channels = p_fmt->audio.i_channels;
382 id->ff_enc_c->bit_rate = p_fmt->i_bitrate;
384 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
386 msg_Err( p_stream, "cannot open encoder" );
390 id->p_buffer_out = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 );
391 id->p_samples = malloc( id->ff_enc_c->frame_size
392 * p_fmt->audio.i_channels * sizeof(int16_t) );
393 memset( id->p_samples, 0,
394 id->ff_enc_c->frame_size * p_fmt->audio.i_channels
397 for ( i = 0; i < MAX_AUDIO; i++ )
399 if ( p_sys->pp_audio_ids[i] == NULL )
401 p_sys->pp_audio_ids[i] = id;
405 if ( i == MAX_AUDIO )
407 msg_Err( p_stream, "too many audio streams!" );
414 msg_Dbg( p_stream, "do not know what to do when switching (fcc=`%4.4s')",
415 (char*)&p_fmt->i_codec );
419 memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
421 /* open output stream */
422 id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
424 if ( id->id == NULL )
433 /*****************************************************************************
434 * Del: Del an elementary stream
435 *****************************************************************************/
436 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
438 sout_stream_sys_t *p_sys = p_stream->p_sys;
440 if ( id->b_switcher_audio )
443 for ( i = 0; i < MAX_AUDIO; i++ )
445 if ( p_sys->pp_audio_ids[i] == id )
447 p_sys->pp_audio_ids[i] = NULL;
455 avcodec_close( id->ff_enc_c );
456 av_free( id->ff_enc_c );
457 av_free( id->p_frame );
458 free( id->p_buffer_out );
463 p_sys->p_out->pf_del( p_sys->p_out, id->id );
470 /*****************************************************************************
471 * Send: Process an input packet
472 *****************************************************************************/
473 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
476 sout_stream_sys_t *p_sys = p_stream->p_sys;
480 block_Release( p_buffer );
484 if ( !id->b_switcher_video && !id->b_switcher_audio )
486 return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
489 block_ChainAppend( &id->p_queued, p_buffer );
491 if ( id->b_switcher_video )
493 /* Check for commands for every video frame. */
494 NetCommand( p_stream );
496 while ( id->p_queued != NULL )
501 if ( p_sys->i_old_cmd != p_sys->i_cmd )
503 i_dts = VideoCommand( p_stream, id );
506 i_dts = Process( p_stream, id, i_dts );
508 for ( i = 0; i < MAX_AUDIO; i++ )
510 if ( p_sys->pp_audio_ids[i] != NULL )
511 Process( p_stream, p_sys->pp_audio_ids[i], i_dts );
519 /*****************************************************************************
520 * Process: Process and dispatch buffers
521 *****************************************************************************/
522 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
525 sout_stream_sys_t *p_sys = p_stream->p_sys;
527 block_t *p_blocks = NULL;
528 block_t *p_blocks_out = NULL;
530 /* Find out the blocks we need. */
531 while ( id->p_queued != NULL
532 && (!i_max_dts || id->p_queued->i_dts <= i_max_dts) )
534 block_t *p_next = id->p_queued->p_next;
535 id->p_queued->p_next = NULL;
536 i_dts = id->p_queued->i_dts;
537 block_ChainAppend( &p_blocks, id->p_queued );
538 id->p_queued = p_next;
541 if ( p_sys->i_old_cmd == 0 )
544 if ( p_blocks != NULL )
545 p_sys->p_out->pf_send( p_sys->p_out, id->id, p_blocks );
549 if ( p_sys->i_old_cmd == -1 )
551 /* No output at all */
552 while ( p_blocks != NULL )
554 block_t * p_next = p_blocks->p_next;
555 block_Release( p_blocks );
561 while ( p_blocks != NULL )
563 block_t * p_next = p_blocks->p_next;
566 if ( id->b_switcher_video )
568 p_out = VideoGetBuffer( p_stream, id, p_blocks );
572 p_out = AudioGetBuffer( p_stream, id, p_blocks );
577 block_ChainAppend( &p_blocks_out, p_out );
581 if ( p_blocks_out != NULL )
582 p_sys->p_out->pf_send( p_sys->p_out, id->id, p_blocks_out );
586 /*****************************************************************************
587 * UnpackFromFile: Read a YUV picture and store it in our format
588 *****************************************************************************/
589 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
590 int i_width, int i_height,
594 FILE *p_file = utf8_fopen( psz_file, "r" );
596 if ( p_file == NULL )
598 msg_Err( p_stream, "file %s not found", psz_file );
602 vout_InitPicture( VLC_OBJECT(p_stream), p_pic, VLC_FOURCC('I','4','2','0'),
604 i_width * VOUT_ASPECT_FACTOR / i_height );
605 for ( i = 0; i < p_pic->i_planes; i++ )
607 p_pic->p[i].p_pixels = malloc( p_pic->p[i].i_lines *
608 p_pic->p[i].i_pitch );
609 memset( p_pic->p[i].p_pixels, 0, p_pic->p[i].i_lines *
610 p_pic->p[i].i_pitch );
613 for ( i = 0; i < i_height; i++ )
616 uint8_t p_buffer[i_width * 2];
617 uint8_t *p_char = p_buffer;
618 uint8_t *p_y = &p_pic->p[0].p_pixels[i * p_pic->p[0].i_pitch];
619 uint8_t *p_u = &p_pic->p[1].p_pixels[i/2 * p_pic->p[1].i_pitch];
620 uint8_t *p_v = &p_pic->p[2].p_pixels[i/2 * p_pic->p[2].i_pitch];
622 if ( fread( p_buffer, 2, i_width, p_file ) != (size_t)i_width )
624 msg_Err( p_stream, "premature end of file %s", psz_file );
626 for ( i = 0; i < p_pic->i_planes; i++ )
628 free( p_pic->p[i].p_pixels );
634 for ( j = 0; j < i_width; j++ )
636 uint8_t **pp_chroma = i_chroma ? &p_v : &p_u;
637 i_chroma = !i_chroma;
639 **pp_chroma = (**pp_chroma + *p_char + 1) / 2;
641 **pp_chroma = *p_char;
652 /*****************************************************************************
653 * NetCommand: Get a command from the network
654 *****************************************************************************/
655 static void NetCommand( sout_stream_t *p_stream )
657 sout_stream_sys_t *p_sys = p_stream->p_sys;
659 int i_len = recv( p_sys->i_fd, psz_buffer, sizeof( psz_buffer ) - 1, 0 );
663 psz_buffer[i_len] = '\0';
664 int i_cmd = strtol( psz_buffer, NULL, 0 );
665 if ( i_cmd < -1 || i_cmd > p_sys->i_nb_pictures )
667 msg_Err( p_stream, "got a wrong command (%d)", i_cmd );
671 p_sys->i_cmd = i_cmd;
673 msg_Dbg( p_stream, "new command: %d old:%d", p_sys->i_cmd,
678 /*****************************************************************************
679 * VideoCommand: Create/Delete a video encoder
680 *****************************************************************************/
681 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id )
683 sout_stream_sys_t *p_sys = p_stream->p_sys;
685 if ( p_sys->i_cmd == 0 && !(id->p_queued->i_flags & BLOCK_FLAG_TYPE_I) )
687 mtime_t i_dts = id->p_queued->i_dts;
688 block_t *p_block = id->p_queued->p_next;
690 while ( p_block != NULL )
692 if ( p_block->i_flags & BLOCK_FLAG_TYPE_I )
694 i_dts = p_block->i_dts;
695 p_block = p_block->p_next;
701 p_sys->i_old_cmd = p_sys->i_cmd;
705 avcodec_close( id->ff_enc_c );
706 av_free( id->ff_enc_c );
707 av_free( id->p_frame );
708 free( id->p_buffer_out );
712 if ( p_sys->i_cmd > 0 )
714 /* Create a new encoder. */
715 int i_ff_codec = CODEC_ID_MPEG2VIDEO;
716 int i_aspect_num, i_aspect_den;
718 if( i_ff_codec == 0 )
720 msg_Err( p_stream, "cannot find encoder" );
724 id->ff_enc = avcodec_find_encoder( i_ff_codec );
727 msg_Err( p_stream, "cannot find encoder (avcodec)" );
731 id->ff_enc_c = avcodec_alloc_context();
733 /* Set CPU capabilities */
734 unsigned i_cpu = vlc_CPU();
735 id->ff_enc_c->dsp_mask = 0;
736 if( !(i_cpu & CPU_CAPABILITY_MMX) )
738 id->ff_enc_c->dsp_mask |= FF_MM_MMX;
740 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
742 id->ff_enc_c->dsp_mask |= FF_MM_MMXEXT;
744 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
746 id->ff_enc_c->dsp_mask |= FF_MM_3DNOW;
748 if( !(i_cpu & CPU_CAPABILITY_SSE) )
750 id->ff_enc_c->dsp_mask |= FF_MM_SSE;
751 id->ff_enc_c->dsp_mask |= FF_MM_SSE2;
754 id->ff_enc_c->width = p_sys->p_pictures[p_sys->i_cmd-1].format.i_width;
755 id->ff_enc_c->height = p_sys->p_pictures[p_sys->i_cmd-1].format.i_height;
756 av_reduce( &i_aspect_num, &i_aspect_den,
758 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
759 av_reduce( &id->ff_enc_c->sample_aspect_ratio.num,
760 &id->ff_enc_c->sample_aspect_ratio.den,
761 i_aspect_num * (int64_t)id->ff_enc_c->height,
762 i_aspect_den * (int64_t)id->ff_enc_c->width, 1 << 30 );
764 #if LIBAVCODEC_BUILD >= 4754
765 id->ff_enc_c->time_base.num = 1;
766 id->ff_enc_c->time_base.den = 25; /* FIXME */
768 id->ff_enc_c->frame_rate = 25; /* FIXME */
769 id->ff_enc_c->frame_rate_base = 1;
772 id->ff_enc_c->gop_size = 200;
773 id->ff_enc_c->max_b_frames = 0;
775 id->ff_enc_c->flags |= CODEC_FLAG_QSCALE
776 | CODEC_FLAG_INPUT_PRESERVED
777 | CODEC_FLAG_LOW_DELAY;
779 id->ff_enc_c->mb_decision = FF_MB_DECISION_SIMPLE;
780 id->ff_enc_c->pix_fmt = PIX_FMT_YUV420P;
782 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
784 msg_Err( p_stream, "cannot open encoder" );
788 id->p_buffer_out = malloc( id->ff_enc_c->width * id->ff_enc_c->height * 3 );
789 id->p_frame = avcodec_alloc_frame();
790 id->p_frame->linesize[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].i_pitch;
791 id->p_frame->linesize[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].i_pitch;
792 id->p_frame->linesize[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].i_pitch;
793 id->p_frame->data[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].p_pixels;
794 id->p_frame->data[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].p_pixels;
795 id->p_frame->data[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].p_pixels;
797 id->i_nb_pred = p_sys->i_gop;
803 /*****************************************************************************
804 * VideoGetBuffer: Build an alternate video buffer
805 *****************************************************************************/
806 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
809 sout_stream_sys_t *p_sys = p_stream->p_sys;
813 id->p_frame->quality = p_sys->i_qscale * powf(2.0, FF_LAMBDA_SHIFT + 7.0)
815 id->p_frame->interlaced_frame = 0;
816 id->p_frame->top_field_first = 1;
817 id->p_frame->pts = p_buffer->i_dts;
819 if ( id->i_nb_pred >= p_sys->i_gop )
821 id->p_frame->pict_type = FF_I_TYPE;
823 id->p_frame->me_threshold = 0;
824 id->p_frame->mb_threshold = 0;
830 id->p_frame->pict_type = FF_P_TYPE;
832 if ( id->p_frame->mb_type != NULL )
834 id->p_frame->me_threshold = MAX_THRESHOLD;
835 id->p_frame->mb_threshold = MAX_THRESHOLD;
841 i_out = avcodec_encode_video( id->ff_enc_c, id->p_buffer_out,
842 id->ff_enc_c->width * id->ff_enc_c->height * 3,
849 if ( id->p_frame->mb_type == NULL
850 && id->ff_enc_c->coded_frame->pict_type != FF_I_TYPE )
852 int mb_width = (id->ff_enc_c->width + 15) / 16;
853 int mb_height = (id->ff_enc_c->height + 15) / 16;
854 int h_chroma_shift, v_chroma_shift;
857 avcodec_get_chroma_sub_sample( id->ff_enc_c->pix_fmt, &h_chroma_shift,
860 id->p_frame->motion_subsample_log2
861 = id->ff_enc_c->coded_frame->motion_subsample_log2;
862 id->p_frame->mb_type = malloc( ((mb_width + 1) * (mb_height + 1) + 1)
863 * sizeof(uint32_t) );
864 vlc_memcpy( id->p_frame->mb_type, id->ff_enc_c->coded_frame->mb_type,
865 (mb_width + 1) * mb_height * sizeof(id->p_frame->mb_type[0]));
867 for ( i = 0; i < 2; i++ )
869 int stride = ((16 * mb_width )
870 >> id->ff_enc_c->coded_frame->motion_subsample_log2) + 1;
871 int height = ((16 * mb_height)
872 >> id->ff_enc_c->coded_frame->motion_subsample_log2);
873 int b8_stride = mb_width * 2 + 1;
875 if ( id->ff_enc_c->coded_frame->motion_val[i] )
877 id->p_frame->motion_val[i] = malloc( 2 * stride * height
879 vlc_memcpy( id->p_frame->motion_val[i],
880 id->ff_enc_c->coded_frame->motion_val[i],
881 2 * stride * height * sizeof(int16_t) );
883 if ( id->ff_enc_c->coded_frame->ref_index[i] )
885 id->p_frame->ref_index[i] = malloc( b8_stride * 2 * mb_height
887 vlc_memcpy( id->p_frame->ref_index[i],
888 id->ff_enc_c->coded_frame->ref_index[i],
889 b8_stride * 2 * mb_height * sizeof(int8_t));
895 p_out = block_New( p_stream, i_out );
896 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
897 p_out->i_length = p_buffer->i_length;
898 p_out->i_pts = p_buffer->i_dts;
899 p_out->i_dts = p_buffer->i_dts;
900 p_out->i_rate = p_buffer->i_rate;
902 switch ( id->ff_enc_c->coded_frame->pict_type )
905 p_out->i_flags |= BLOCK_FLAG_TYPE_I;
908 p_out->i_flags |= BLOCK_FLAG_TYPE_P;
911 p_out->i_flags |= BLOCK_FLAG_TYPE_B;
917 block_Release( p_buffer );
922 /*****************************************************************************
923 * AudioGetBuffer: Build an alternate audio buffer
924 *****************************************************************************/
925 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
931 i_out = avcodec_encode_audio( id->ff_enc_c, id->p_buffer_out,
932 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
938 p_out = block_New( p_stream, i_out );
939 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
940 p_out->i_length = p_buffer->i_length;
941 p_out->i_pts = p_buffer->i_dts;
942 p_out->i_dts = p_buffer->i_dts;
943 p_out->i_rate = p_buffer->i_rate;
945 block_Release( p_buffer );