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 #include "../codec/avcodec/avcodec.h"
62 #define SOUT_CFG_PREFIX "sout-switcher-"
63 #define MAX_PICTURES 10
65 #define MAX_THRESHOLD 99999999
67 /*****************************************************************************
69 *****************************************************************************/
70 static int Open ( vlc_object_t * );
71 static void Close ( vlc_object_t * );
73 static sout_stream_id_t *Add( sout_stream_t *, es_format_t * );
74 static int Del( sout_stream_t *, sout_stream_id_t * );
75 static int Send( sout_stream_t *, sout_stream_id_t *, block_t * );
77 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
79 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
80 int i_width, int i_height,
82 static void NetCommand( sout_stream_t *p_stream );
83 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id );
84 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
86 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
89 /*****************************************************************************
91 *****************************************************************************/
92 #define FILES_TEXT N_("Files")
93 #define FILES_LONGTEXT N_( \
94 "Full paths of the files separated by colons." )
95 #define SIZES_TEXT N_("Sizes")
96 #define SIZES_LONGTEXT N_( \
97 "List of sizes separated by colons (720x576:480x576)." )
98 #define RATIO_TEXT N_("Aspect ratio")
99 #define RATIO_LONGTEXT N_( \
100 "Aspect ratio (4:3, 16:9)." )
101 #define PORT_TEXT N_("Command UDP port")
102 #define PORT_LONGTEXT N_( \
103 "UDP port to listen to for commands." )
104 #define COMMAND_TEXT N_("Command")
105 #define COMMAND_LONGTEXT N_( \
106 "Initial command to execute." )
107 #define GOP_TEXT N_("GOP size")
108 #define GOP_LONGTEXT N_( \
109 "Number of P frames between two I frames." )
110 #define QSCALE_TEXT N_("Quantizer scale")
111 #define QSCALE_LONGTEXT N_( \
112 "Fixed quantizer scale to use." )
113 #define AUDIO_TEXT N_("Mute audio")
114 #define AUDIO_LONGTEXT N_( \
115 "Mute audio when command is not 0." )
118 set_description( N_("MPEG2 video switcher stream output") )
119 set_capability( "sout stream", 50 )
120 add_shortcut( "switcher" )
121 set_callbacks( Open, Close )
123 add_string( SOUT_CFG_PREFIX "files", "", FILES_TEXT,
124 FILES_LONGTEXT, false )
125 add_string( SOUT_CFG_PREFIX "sizes", "", SIZES_TEXT,
126 SIZES_LONGTEXT, false )
127 add_string( SOUT_CFG_PREFIX "aspect-ratio", "4:3", RATIO_TEXT,
128 RATIO_LONGTEXT, false )
129 add_integer( SOUT_CFG_PREFIX "port", 5001,
130 PORT_TEXT, PORT_LONGTEXT, true )
131 add_integer( SOUT_CFG_PREFIX "command", 0,
132 COMMAND_TEXT, COMMAND_LONGTEXT, true )
133 add_integer( SOUT_CFG_PREFIX "gop", 8,
134 GOP_TEXT, GOP_LONGTEXT, true )
135 add_integer( SOUT_CFG_PREFIX "qscale", 5,
136 QSCALE_TEXT, QSCALE_LONGTEXT, true )
137 add_bool( SOUT_CFG_PREFIX "mute-audio", true,
138 AUDIO_TEXT, AUDIO_LONGTEXT, true )
141 static const char *const ppsz_sout_options[] = {
142 "files", "sizes", "aspect-ratio", "port", "command", "gop", "qscale",
146 struct sout_stream_sys_t
151 sout_stream_id_t *pp_audio_ids[MAX_AUDIO];
155 picture_t p_pictures[MAX_PICTURES];
160 int i_cmd, i_old_cmd;
163 struct sout_stream_id_t
166 bool b_switcher_video;
167 bool b_switcher_audio;
173 AVCodecContext *ff_enc_c;
175 uint8_t *p_buffer_out;
180 /*****************************************************************************
182 *****************************************************************************/
183 static int Open( vlc_object_t *p_this )
185 sout_stream_t *p_stream = (sout_stream_t*)p_this;
186 sout_stream_sys_t *p_sys;
188 char *psz_files, *psz_sizes;
189 int i_height = 0, i_width = 0;
191 p_sys = calloc( 1, sizeof(sout_stream_sys_t) );
195 if( !p_stream->p_next )
197 msg_Err( p_stream, "cannot create chain" );
202 config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
205 var_Get( p_stream, SOUT_CFG_PREFIX "files", &val );
206 psz_files = val.psz_string;
207 var_Get( p_stream, SOUT_CFG_PREFIX "sizes", &val );
208 psz_sizes = val.psz_string;
210 p_sys->i_nb_pictures = 0;
211 while ( psz_files && *psz_files )
213 char * psz_file = psz_files;
214 char * psz_size = psz_sizes;
216 while ( *psz_files && *psz_files != ':' )
218 if ( *psz_files == ':' )
223 while ( *psz_sizes && *psz_sizes != ':' )
225 if ( *psz_sizes == ':' )
227 if ( sscanf( psz_size, "%dx%d", &i_width, &i_height ) != 2 )
229 msg_Err( p_stream, "bad size %s for file %s", psz_size,
236 if ( UnpackFromFile( p_stream, psz_file, i_width, i_height,
237 &p_sys->p_pictures[p_sys->i_nb_pictures] ) < 0 )
242 p_sys->i_nb_pictures++;
245 var_Get( p_stream, SOUT_CFG_PREFIX "aspect-ratio", &val );
246 if ( val.psz_string )
248 char *psz_parser = strchr( val.psz_string, ':' );
252 *psz_parser++ = '\0';
253 p_sys->i_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
254 / atoi( psz_parser );
258 msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
259 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
262 free( val.psz_string );
266 p_sys->i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
269 var_Get( p_stream, SOUT_CFG_PREFIX "port", &val );
270 p_sys->i_fd = net_ListenUDP1( VLC_OBJECT(p_stream), NULL, val.i_int );
271 if ( p_sys->i_fd < 0 )
277 var_Get( p_stream, SOUT_CFG_PREFIX "command", &val );
278 p_sys->i_cmd = val.i_int;
279 p_sys->i_old_cmd = 0;
281 var_Get( p_stream, SOUT_CFG_PREFIX "gop", &val );
282 p_sys->i_gop = val.i_int;
284 var_Get( p_stream, SOUT_CFG_PREFIX "qscale", &val );
285 p_sys->i_qscale = val.i_int;
287 var_Get( p_stream, SOUT_CFG_PREFIX "mute-audio", &val );
288 p_sys->b_audio = val.b_bool;
290 p_stream->pf_add = Add;
291 p_stream->pf_del = Del;
292 p_stream->pf_send = Send;
293 p_stream->p_sys = p_sys;
296 avcodec_register_all();
301 /*****************************************************************************
303 *****************************************************************************/
304 static void Close( vlc_object_t * p_this )
306 sout_stream_t *p_stream = (sout_stream_t *)p_this;
307 sout_stream_sys_t *p_sys = p_stream->p_sys;
312 /*****************************************************************************
313 * Add: Add an input elementary stream
314 *****************************************************************************/
315 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
317 sout_stream_sys_t *p_sys = p_stream->p_sys;
318 sout_stream_id_t *id;
320 id = calloc( 1, sizeof( sout_stream_id_t ) );
324 if( p_fmt->i_cat == VIDEO_ES && p_fmt->i_codec == VLC_CODEC_MPGV )
326 id->b_switcher_video = true;
327 p_fmt->i_codec = VLC_CODEC_MPGV;
328 msg_Dbg( p_stream, "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_CODEC_MPGA &&
335 int i_ff_codec = CODEC_ID_MP2;
338 id->b_switcher_audio = true;
339 msg_Dbg( p_stream, "creating audio switcher for fcc=`%4.4s' cmd:%d",
340 (char*)&p_fmt->i_codec, p_sys->i_cmd );
342 /* Allocate the encoder right now. */
343 if( i_ff_codec == 0 )
345 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)" );
358 id->ff_enc_c = avcodec_alloc_context();
360 /* Set CPU capabilities */
361 unsigned i_cpu = vlc_CPU();
362 id->ff_enc_c->dsp_mask = 0;
363 if( !(i_cpu & CPU_CAPABILITY_MMX) )
365 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_MMX;
367 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
369 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_MMX2;
371 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
373 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_3DNOW;
375 if( !(i_cpu & CPU_CAPABILITY_SSE) )
377 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_SSE;
379 if( !(i_cpu & CPU_CAPABILITY_SSE2) )
381 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_SSE2;
384 id->ff_enc_c->sample_rate = p_fmt->audio.i_rate;
385 id->ff_enc_c->channels = p_fmt->audio.i_channels;
386 id->ff_enc_c->bit_rate = p_fmt->i_bitrate;
389 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
391 vlc_avcodec_unlock();
392 msg_Err( p_stream, "cannot open encoder" );
393 av_free( id->ff_enc_c );
397 vlc_avcodec_unlock();
399 id->p_buffer_out = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 );
400 id->p_samples = calloc( id->ff_enc_c->frame_size * p_fmt->audio.i_channels,
402 if( !id->p_buffer_out || !id->p_samples )
405 for( i = 0; i < MAX_AUDIO; i++ )
407 if( p_sys->pp_audio_ids[i] == NULL )
409 p_sys->pp_audio_ids[i] = id;
415 msg_Err( p_stream, "too many audio streams!" );
421 msg_Dbg( p_stream, "do not know what to do when switching (fcc=`%4.4s')",
422 (char*)&p_fmt->i_codec );
426 memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
428 /* open output stream */
429 id->id = p_stream->p_next->pf_add( p_stream->p_next, p_fmt );
436 avcodec_close( id->ff_enc_c );
437 vlc_avcodec_unlock();
438 free( id->p_samples );
439 free( id->p_buffer_out );
440 av_free( id->ff_enc_c );
445 /*****************************************************************************
446 * Del: Del an elementary stream
447 *****************************************************************************/
448 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
450 sout_stream_sys_t *p_sys = p_stream->p_sys;
452 if ( id->b_switcher_audio )
455 for ( i = 0; i < MAX_AUDIO; i++ )
457 if ( p_sys->pp_audio_ids[i] == id )
459 p_sys->pp_audio_ids[i] = NULL;
468 avcodec_close( id->ff_enc_c );
469 vlc_avcodec_unlock();
470 av_free( id->ff_enc_c );
471 av_free( id->p_frame );
472 free( id->p_buffer_out );
477 p_stream->p_next->pf_del( p_stream->p_next, id->id );
484 /*****************************************************************************
485 * Send: Process an input packet
486 *****************************************************************************/
487 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
490 sout_stream_sys_t *p_sys = p_stream->p_sys;
494 block_Release( p_buffer );
498 if ( !id->b_switcher_video && !id->b_switcher_audio )
500 return p_stream->p_next->pf_send( p_stream->p_next, id->id, p_buffer );
503 block_ChainAppend( &id->p_queued, p_buffer );
505 if ( id->b_switcher_video )
507 /* Check for commands for every video frame. */
508 NetCommand( p_stream );
510 while ( id->p_queued != NULL )
514 if ( p_sys->i_old_cmd != p_sys->i_cmd )
516 i_dts = VideoCommand( p_stream, id );
519 i_dts = Process( p_stream, id, i_dts );
521 for ( int i = 0; i < MAX_AUDIO; i++ )
523 if ( p_sys->pp_audio_ids[i] != NULL )
524 Process( p_stream, p_sys->pp_audio_ids[i], i_dts );
532 /*****************************************************************************
533 * Process: Process and dispatch buffers
534 *****************************************************************************/
535 static mtime_t Process( sout_stream_t *p_stream, sout_stream_id_t *id,
538 sout_stream_sys_t *p_sys = p_stream->p_sys;
540 block_t *p_blocks = NULL;
541 block_t *p_blocks_out = NULL;
543 /* Find out the blocks we need. */
544 while ( id->p_queued != NULL
545 && (!i_max_dts || id->p_queued->i_dts <= i_max_dts) )
547 block_t *p_next = id->p_queued->p_next;
548 id->p_queued->p_next = NULL;
549 i_dts = id->p_queued->i_dts;
550 block_ChainAppend( &p_blocks, id->p_queued );
551 id->p_queued = p_next;
554 if ( p_sys->i_old_cmd == 0 )
557 if ( p_blocks != NULL )
558 p_stream->p_next->pf_send( p_stream->p_next, id->id, p_blocks );
562 if ( p_sys->i_old_cmd == -1 )
564 /* No output at all */
565 while ( p_blocks != NULL )
567 block_t * p_next = p_blocks->p_next;
568 block_Release( p_blocks );
574 while ( p_blocks != NULL )
576 block_t * p_next = p_blocks->p_next;
579 if ( id->b_switcher_video )
581 p_out = VideoGetBuffer( p_stream, id, p_blocks );
585 p_out = AudioGetBuffer( p_stream, id, p_blocks );
590 block_ChainAppend( &p_blocks_out, p_out );
594 if ( p_blocks_out != NULL )
595 p_stream->p_next->pf_send( p_stream->p_next, id->id, p_blocks_out );
599 /*****************************************************************************
600 * UnpackFromFile: Read a YUV picture and store it in our format
601 *****************************************************************************/
602 static int UnpackFromFile( sout_stream_t *p_stream, const char *psz_file,
603 int i_width, int i_height,
607 FILE *p_file = vlc_fopen( psz_file, "r" );
609 if ( p_file == NULL )
611 msg_Err( p_stream, "file %s not found", psz_file );
615 if( picture_Setup( p_pic, VLC_CODEC_I420,
616 i_width, i_height, 1, 1 ) )
618 msg_Err( p_stream, "unknown chroma" );
621 for ( i = 0; i < p_pic->i_planes; i++ )
623 p_pic->p[i].p_pixels = malloc( p_pic->p[i].i_lines *
624 p_pic->p[i].i_pitch );
625 memset( p_pic->p[i].p_pixels, 0, p_pic->p[i].i_lines *
626 p_pic->p[i].i_pitch );
629 for ( i = 0; i < i_height; i++ )
632 uint8_t p_buffer[i_width * 2];
633 uint8_t *p_char = p_buffer;
634 uint8_t *p_y = &p_pic->p[0].p_pixels[i * p_pic->p[0].i_pitch];
635 uint8_t *p_u = &p_pic->p[1].p_pixels[i/2 * p_pic->p[1].i_pitch];
636 uint8_t *p_v = &p_pic->p[2].p_pixels[i/2 * p_pic->p[2].i_pitch];
638 if ( fread( p_buffer, 2, i_width, p_file ) != (size_t)i_width )
640 msg_Err( p_stream, "premature end of file %s", psz_file );
642 for ( i = 0; i < p_pic->i_planes; i++ )
644 free( p_pic->p[i].p_pixels );
650 for ( j = 0; j < i_width; j++ )
652 uint8_t **pp_chroma = i_chroma ? &p_v : &p_u;
653 i_chroma = !i_chroma;
655 **pp_chroma = (**pp_chroma + *p_char + 1) / 2;
657 **pp_chroma = *p_char;
668 /*****************************************************************************
669 * NetCommand: Get a command from the network
670 *****************************************************************************/
671 static void NetCommand( sout_stream_t *p_stream )
673 sout_stream_sys_t *p_sys = p_stream->p_sys;
675 int i_len = recv( p_sys->i_fd, psz_buffer, sizeof( psz_buffer ) - 1, 0 );
679 psz_buffer[i_len] = '\0';
680 int i_cmd = strtol( psz_buffer, NULL, 0 );
681 if ( i_cmd < -1 || i_cmd > p_sys->i_nb_pictures )
683 msg_Err( p_stream, "got a wrong command (%d)", i_cmd );
687 p_sys->i_cmd = i_cmd;
689 msg_Dbg( p_stream, "new command: %d old:%d", p_sys->i_cmd,
694 /*****************************************************************************
695 * VideoCommand: Create/Delete a video encoder
696 *****************************************************************************/
697 static mtime_t VideoCommand( sout_stream_t *p_stream, sout_stream_id_t *id )
699 sout_stream_sys_t *p_sys = p_stream->p_sys;
701 if ( p_sys->i_cmd == 0 && !(id->p_queued->i_flags & BLOCK_FLAG_TYPE_I) )
703 mtime_t i_dts = id->p_queued->i_dts;
704 block_t *p_block = id->p_queued->p_next;
706 while ( p_block != NULL )
708 if ( p_block->i_flags & BLOCK_FLAG_TYPE_I )
710 i_dts = p_block->i_dts;
711 p_block = p_block->p_next;
717 p_sys->i_old_cmd = p_sys->i_cmd;
722 avcodec_close( id->ff_enc_c );
723 vlc_avcodec_unlock();
724 av_free( id->ff_enc_c );
725 av_free( id->p_frame );
726 free( id->p_buffer_out );
730 if ( p_sys->i_cmd > 0 )
732 /* Create a new encoder. */
733 int i_ff_codec = CODEC_ID_MPEG2VIDEO;
734 int i_aspect_num, i_aspect_den;
736 if( i_ff_codec == 0 )
738 msg_Err( p_stream, "cannot find encoder" );
742 id->ff_enc = avcodec_find_encoder( i_ff_codec );
745 msg_Err( p_stream, "cannot find encoder (avcodec)" );
749 id->ff_enc_c = avcodec_alloc_context();
751 /* Set CPU capabilities */
752 unsigned i_cpu = vlc_CPU();
753 id->ff_enc_c->dsp_mask = 0;
754 if( !(i_cpu & CPU_CAPABILITY_MMX) )
756 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_MMX;
758 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
760 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_MMX2;
762 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
764 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_3DNOW;
766 if( !(i_cpu & CPU_CAPABILITY_SSE) )
768 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_SSE;
770 if( !(i_cpu & CPU_CAPABILITY_SSE2) )
772 id->ff_enc_c->dsp_mask |= AV_CPU_FLAG_SSE2;
775 id->ff_enc_c->width = p_sys->p_pictures[p_sys->i_cmd-1].format.i_width;
776 id->ff_enc_c->height = p_sys->p_pictures[p_sys->i_cmd-1].format.i_height;
777 av_reduce( &i_aspect_num, &i_aspect_den,
779 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
780 av_reduce( &id->ff_enc_c->sample_aspect_ratio.num,
781 &id->ff_enc_c->sample_aspect_ratio.den,
782 i_aspect_num * (int64_t)id->ff_enc_c->height,
783 i_aspect_den * (int64_t)id->ff_enc_c->width, 1 << 30 );
785 #if LIBAVCODEC_BUILD >= 4754
786 id->ff_enc_c->time_base.num = 1;
787 id->ff_enc_c->time_base.den = 25; /* FIXME */
789 id->ff_enc_c->frame_rate = 25; /* FIXME */
790 id->ff_enc_c->frame_rate_base = 1;
793 id->ff_enc_c->gop_size = 200;
794 id->ff_enc_c->max_b_frames = 0;
796 id->ff_enc_c->flags |= CODEC_FLAG_QSCALE
797 | CODEC_FLAG_INPUT_PRESERVED
798 | CODEC_FLAG_LOW_DELAY;
800 id->ff_enc_c->mb_decision = FF_MB_DECISION_SIMPLE;
801 id->ff_enc_c->pix_fmt = PIX_FMT_YUV420P;
804 if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
806 vlc_avcodec_unlock();
807 msg_Err( p_stream, "cannot open encoder" );
810 vlc_avcodec_unlock();
812 id->p_buffer_out = malloc( id->ff_enc_c->width * id->ff_enc_c->height * 3 );
813 id->p_frame = avcodec_alloc_frame();
814 id->p_frame->linesize[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].i_pitch;
815 id->p_frame->linesize[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].i_pitch;
816 id->p_frame->linesize[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].i_pitch;
817 id->p_frame->data[0] = p_sys->p_pictures[p_sys->i_cmd-1].p[0].p_pixels;
818 id->p_frame->data[1] = p_sys->p_pictures[p_sys->i_cmd-1].p[1].p_pixels;
819 id->p_frame->data[2] = p_sys->p_pictures[p_sys->i_cmd-1].p[2].p_pixels;
821 id->i_nb_pred = p_sys->i_gop;
827 /*****************************************************************************
828 * VideoGetBuffer: Build an alternate video buffer
829 *****************************************************************************/
830 static block_t *VideoGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
833 sout_stream_sys_t *p_sys = p_stream->p_sys;
837 id->p_frame->quality = p_sys->i_qscale * powf(2.0, FF_LAMBDA_SHIFT + 7.0)
839 id->p_frame->interlaced_frame = 0;
840 id->p_frame->top_field_first = 1;
841 id->p_frame->pts = p_buffer->i_dts;
843 if ( id->i_nb_pred >= p_sys->i_gop )
845 id->p_frame->pict_type = FF_I_TYPE;
847 id->p_frame->me_threshold = 0;
848 id->p_frame->mb_threshold = 0;
854 id->p_frame->pict_type = FF_P_TYPE;
856 if ( id->p_frame->mb_type != NULL )
858 id->p_frame->me_threshold = MAX_THRESHOLD;
859 id->p_frame->mb_threshold = MAX_THRESHOLD;
865 i_out = avcodec_encode_video( id->ff_enc_c, id->p_buffer_out,
866 id->ff_enc_c->width * id->ff_enc_c->height * 3,
873 if ( id->p_frame->mb_type == NULL
874 && id->ff_enc_c->coded_frame->pict_type != FF_I_TYPE )
876 int mb_width = (id->ff_enc_c->width + 15) / 16;
877 int mb_height = (id->ff_enc_c->height + 15) / 16;
878 int h_chroma_shift, v_chroma_shift;
881 avcodec_get_chroma_sub_sample( id->ff_enc_c->pix_fmt, &h_chroma_shift,
884 id->p_frame->motion_subsample_log2
885 = id->ff_enc_c->coded_frame->motion_subsample_log2;
886 id->p_frame->mb_type = malloc( ((mb_width + 1) * (mb_height + 1) + 1)
887 * sizeof(uint32_t) );
888 vlc_memcpy( id->p_frame->mb_type, id->ff_enc_c->coded_frame->mb_type,
889 (mb_width + 1) * mb_height * sizeof(id->p_frame->mb_type[0]));
891 for ( i = 0; i < 2; i++ )
893 int stride = ((16 * mb_width )
894 >> id->ff_enc_c->coded_frame->motion_subsample_log2) + 1;
895 int height = ((16 * mb_height)
896 >> id->ff_enc_c->coded_frame->motion_subsample_log2);
897 int b8_stride = mb_width * 2 + 1;
899 if ( id->ff_enc_c->coded_frame->motion_val[i] )
901 id->p_frame->motion_val[i] = malloc( 2 * stride * height
903 vlc_memcpy( id->p_frame->motion_val[i],
904 id->ff_enc_c->coded_frame->motion_val[i],
905 2 * stride * height * sizeof(int16_t) );
907 if ( id->ff_enc_c->coded_frame->ref_index[i] )
909 id->p_frame->ref_index[i] = malloc( b8_stride * 2 * mb_height
911 vlc_memcpy( id->p_frame->ref_index[i],
912 id->ff_enc_c->coded_frame->ref_index[i],
913 b8_stride * 2 * mb_height * sizeof(int8_t));
919 p_out = block_New( p_stream, i_out );
920 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
921 p_out->i_length = p_buffer->i_length;
922 p_out->i_pts = p_buffer->i_dts;
923 p_out->i_dts = p_buffer->i_dts;
925 switch ( id->ff_enc_c->coded_frame->pict_type )
928 p_out->i_flags |= BLOCK_FLAG_TYPE_I;
931 p_out->i_flags |= BLOCK_FLAG_TYPE_P;
934 p_out->i_flags |= BLOCK_FLAG_TYPE_B;
940 block_Release( p_buffer );
945 /*****************************************************************************
946 * AudioGetBuffer: Build an alternate audio buffer
947 *****************************************************************************/
948 static block_t *AudioGetBuffer( sout_stream_t *p_stream, sout_stream_id_t *id,
955 i_out = avcodec_encode_audio( id->ff_enc_c, id->p_buffer_out,
956 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
962 p_out = block_New( p_stream, i_out );
963 vlc_memcpy( p_out->p_buffer, id->p_buffer_out, i_out );
964 p_out->i_length = p_buffer->i_length;
965 p_out->i_pts = p_buffer->i_dts;
966 p_out->i_dts = p_buffer->i_dts;
968 block_Release( p_buffer );