mp4.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:60k
- /*****************************************************************************
- * mp4.c: mp4/mov muxer
- *****************************************************************************
- * Copyright (C) 2001, 2002, 2003 VideoLAN
- * $Id: mp4.c 9078 2004-10-29 09:19:38Z gbazin $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin at videolan dot org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h>
- #include <string.h>
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/sout.h>
- #ifdef HAVE_TIME_H
- #include <time.h>
- #endif
- #include "iso_lang.h"
- #include "vlc_meta.h"
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define FASTSTART_TEXT N_("Create "Fast start" files")
- #define FASTSTART_LONGTEXT N_(
- "When this option is turned on, "Fast start" files will be created. "
- "("Fast start" files are optimized for download, allowing the user "
- "to start previewing the file while it is downloading).")
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-mp4-"
- vlc_module_begin();
- set_description( _("MP4/MOV muxer") );
- add_bool( SOUT_CFG_PREFIX "faststart", 1, NULL, FASTSTART_TEXT, FASTSTART_LONGTEXT,
- VLC_TRUE );
- set_capability( "sout mux", 5 );
- add_shortcut( "mp4" );
- add_shortcut( "mov" );
- add_shortcut( "3gp" );
- set_callbacks( Open, Close );
- vlc_module_end();
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- static const char *ppsz_sout_options[] = {
- "faststart", NULL
- };
- static int Control( sout_mux_t *, int, va_list );
- static int AddStream( sout_mux_t *, sout_input_t * );
- static int DelStream( sout_mux_t *, sout_input_t * );
- static int Mux ( sout_mux_t * );
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- typedef struct
- {
- uint64_t i_pos;
- int i_size;
- mtime_t i_pts_dts;
- mtime_t i_length;
- unsigned int i_flags;
- } mp4_entry_t;
- typedef struct
- {
- es_format_t fmt;
- int i_track_id;
- /* index */
- unsigned int i_entry_count;
- unsigned int i_entry_max;
- mp4_entry_t *entry;
- int64_t i_length_neg;
- /* stats */
- int64_t i_dts_start;
- int64_t i_duration;
- /* for later stco fix-up (fast start files) */
- uint64_t i_stco_pos;
- vlc_bool_t b_stco64;
- /* for h264 */
- struct
- {
- int i_profile;
- int i_level;
- int i_sps;
- uint8_t *sps;
- int i_pps;
- uint8_t *pps;
- } avc;
- /* for spu */
- int64_t i_last_dts;
- } mp4_stream_t;
- struct sout_mux_sys_t
- {
- vlc_bool_t b_mov;
- vlc_bool_t b_3gp;
- vlc_bool_t b_64_ext;
- vlc_bool_t b_fast_start;
- uint64_t i_mdat_pos;
- uint64_t i_pos;
- int64_t i_dts_start;
- int i_nb_streams;
- mp4_stream_t **pp_streams;
- };
- typedef struct bo_t
- {
- vlc_bool_t b_grow;
- int i_buffer_size;
- int i_buffer;
- uint8_t *p_buffer;
- } bo_t;
- static void bo_init ( bo_t *, int , uint8_t *, vlc_bool_t );
- static void bo_add_8 ( bo_t *, uint8_t );
- static void bo_add_16be ( bo_t *, uint16_t );
- static void bo_add_24be ( bo_t *, uint32_t );
- static void bo_add_32be ( bo_t *, uint32_t );
- static void bo_add_64be ( bo_t *, uint64_t );
- static void bo_add_fourcc(bo_t *, char * );
- static void bo_add_bo ( bo_t *, bo_t * );
- static void bo_add_mem ( bo_t *, int , uint8_t * );
- static void bo_add_descr( bo_t *, uint8_t , uint32_t );
- static void bo_fix_32be ( bo_t *, int , uint32_t );
- static bo_t *box_new ( char *fcc );
- static bo_t *box_full_new( char *fcc, uint8_t v, uint32_t f );
- static void box_fix ( bo_t *box );
- static void box_free ( bo_t *box );
- static void box_gather ( bo_t *box, bo_t *box2 );
- static void box_send( sout_mux_t *p_mux, bo_t *box );
- static block_t *bo_to_sout( sout_instance_t *p_sout, bo_t *box );
- static bo_t *GetMoovBox( sout_mux_t *p_mux );
- static block_t *ConvertSUBT( sout_mux_t *, mp4_stream_t *, block_t *);
- static void ConvertAVC1( sout_mux_t *, mp4_stream_t *, block_t * );
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_mux_t *p_mux = (sout_mux_t*)p_this;
- sout_mux_sys_t *p_sys;
- bo_t *box;
- msg_Dbg( p_mux, "Mp4 muxer opend" );
- sout_CfgParse( p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg );
- p_mux->pf_control = Control;
- p_mux->pf_addstream = AddStream;
- p_mux->pf_delstream = DelStream;
- p_mux->pf_mux = Mux;
- p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
- p_sys->i_pos = 0;
- p_sys->i_nb_streams = 0;
- p_sys->pp_streams = NULL;
- p_sys->i_mdat_pos = 0;
- p_sys->b_mov = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "mov" );
- p_sys->b_3gp = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "3gp" );
- p_sys->i_dts_start = 0;
- if( !p_sys->b_mov )
- {
- /* Now add ftyp header */
- box = box_new( "ftyp" );
- if( p_sys->b_3gp ) bo_add_fourcc( box, "3gp4" );
- else bo_add_fourcc( box, "isom" );
- bo_add_32be ( box, 0 );
- if( p_sys->b_3gp ) bo_add_fourcc( box, "3gp4" );
- else bo_add_fourcc( box, "mp41" );
- box_fix( box );
- p_sys->i_pos += box->i_buffer;
- p_sys->i_mdat_pos = p_sys->i_pos;
- box_send( p_mux, box );
- }
- /* FIXME FIXME
- * Quicktime actually doesn't like the 64 bits extensions !!! */
- p_sys->b_64_ext = VLC_FALSE;
- /* Now add mdat header */
- box = box_new( "mdat" );
- bo_add_64be ( box, 0 ); // enough to store an extended size
- p_sys->i_pos += box->i_buffer;
- box_send( p_mux, box );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close:
- *****************************************************************************/
- static void Close( vlc_object_t * p_this )
- {
- sout_mux_t *p_mux = (sout_mux_t*)p_this;
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- block_t *p_hdr;
- bo_t bo, *moov;
- vlc_value_t val;
- int i_trak;
- uint64_t i_moov_pos;
- msg_Dbg( p_mux, "Close" );
- /* Update mdat size */
- bo_init( &bo, 0, NULL, VLC_TRUE );
- if( p_sys->i_pos - p_sys->i_mdat_pos >= (((uint64_t)1)<<32) )
- {
- /* Extended size */
- bo_add_32be ( &bo, 1 );
- bo_add_fourcc( &bo, "mdat" );
- bo_add_64be ( &bo, p_sys->i_pos - p_sys->i_mdat_pos );
- }
- else
- {
- bo_add_32be ( &bo, 8 );
- bo_add_fourcc( &bo, "wide" );
- bo_add_32be ( &bo, p_sys->i_pos - p_sys->i_mdat_pos - 8 );
- bo_add_fourcc( &bo, "mdat" );
- }
- p_hdr = bo_to_sout( p_mux->p_sout, &bo );
- free( bo.p_buffer );
- sout_AccessOutSeek( p_mux->p_access, p_sys->i_mdat_pos );
- sout_AccessOutWrite( p_mux->p_access, p_hdr );
- /* Create MOOV header */
- i_moov_pos = p_sys->i_pos;
- moov = GetMoovBox( p_mux );
- /* Check we need to create "fast start" files */
- var_Get( p_this, SOUT_CFG_PREFIX "faststart", &val );
- p_sys->b_fast_start = val.b_bool;
- while( p_sys->b_fast_start )
- {
- /* Move data to the end of the file so we can fit the moov header
- * at the start */
- block_t *p_buf;
- int64_t i_chunk, i_size = p_sys->i_pos - p_sys->i_mdat_pos;
- int i_moov_size = moov->i_buffer;
- while( i_size > 0 )
- {
- i_chunk = __MIN( 32768, i_size );
- p_buf = block_New( p_mux, i_chunk );
- sout_AccessOutSeek( p_mux->p_access,
- p_sys->i_mdat_pos + i_size - i_chunk );
- if( sout_AccessOutRead( p_mux->p_access, p_buf ) < i_chunk )
- {
- msg_Warn( p_this, "read() not supported by acces output, "
- "won't create a fast start file" );
- p_sys->b_fast_start = VLC_FALSE;
- block_Release( p_buf );
- break;
- }
- sout_AccessOutSeek( p_mux->p_access, p_sys->i_mdat_pos + i_size +
- i_moov_size - i_chunk );
- sout_AccessOutWrite( p_mux->p_access, p_buf );
- i_size -= i_chunk;
- }
- if( !p_sys->b_fast_start ) break;
- /* Fix-up samples to chunks table in MOOV header */
- for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
- {
- mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
- unsigned int i;
- int i_chunk;
- moov->i_buffer = p_stream->i_stco_pos;
- for( i_chunk = 0, i = 0; i < p_stream->i_entry_count; i_chunk++ )
- {
- if( p_stream->b_stco64 )
- bo_add_64be( moov, p_stream->entry[i].i_pos + i_moov_size);
- else
- bo_add_32be( moov, p_stream->entry[i].i_pos + i_moov_size);
- while( i < p_stream->i_entry_count )
- {
- if( i + 1 < p_stream->i_entry_count &&
- p_stream->entry[i].i_pos + p_stream->entry[i].i_size
- != p_stream->entry[i + 1].i_pos )
- {
- i++;
- break;
- }
- i++;
- }
- }
- }
- moov->i_buffer = i_moov_size;
- i_moov_pos = p_sys->i_mdat_pos;
- p_sys->b_fast_start = VLC_FALSE;
- }
- /* Write MOOV header */
- sout_AccessOutSeek( p_mux->p_access, i_moov_pos );
- box_send( p_mux, moov );
- /* Clean-up */
- for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
- {
- mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
- es_format_Clean( &p_stream->fmt );
- if( p_stream->avc.i_sps ) free( p_stream->avc.sps );
- if( p_stream->avc.i_pps ) free( p_stream->avc.pps );
- free( p_stream->entry );
- free( p_stream );
- }
- if( p_sys->i_nb_streams ) free( p_sys->pp_streams );
- free( p_sys );
- }
- /*****************************************************************************
- * Control:
- *****************************************************************************/
- static int Control( sout_mux_t *p_mux, int i_query, va_list args )
- {
- vlc_bool_t *pb_bool;
- switch( i_query )
- {
- case MUX_CAN_ADD_STREAM_WHILE_MUXING:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
- *pb_bool = VLC_FALSE;
- return VLC_SUCCESS;
- case MUX_GET_ADD_STREAM_WAIT:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
- *pb_bool = VLC_TRUE;
- return VLC_SUCCESS;
- case MUX_GET_MIME: /* Not needed, as not streamable */
- default:
- return VLC_EGENERIC;
- }
- }
- /*****************************************************************************
- * AddStream:
- *****************************************************************************/
- static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- mp4_stream_t *p_stream;
- switch( p_input->p_fmt->i_codec )
- {
- case VLC_FOURCC( 'm', 'p', '4', 'a' ):
- case VLC_FOURCC( 'm', 'p', '4', 'v' ):
- case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
- case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
- case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
- case VLC_FOURCC( 'm', 'j', 'p', 'b' ):
- case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
- case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
- case VLC_FOURCC( 'h', '2', '6', '4' ):
- break;
- case VLC_FOURCC( 's', 'u', 'b', 't' ):
- msg_Warn( p_mux, "subtitle track added like in .mov (even when creating .mp4)" );
- break;
- default:
- msg_Err( p_mux, "unsupported codec %4.4s in mp4",
- (char*)&p_input->p_fmt->i_codec );
- return VLC_EGENERIC;
- }
- p_stream = malloc( sizeof( mp4_stream_t ) );
- es_format_Copy( &p_stream->fmt, p_input->p_fmt );
- p_stream->i_track_id = p_sys->i_nb_streams + 1;
- p_stream->i_length_neg = 0;
- p_stream->i_entry_count = 0;
- p_stream->i_entry_max = 1000;
- p_stream->entry =
- calloc( p_stream->i_entry_max, sizeof( mp4_entry_t ) );
- p_stream->i_dts_start = 0;
- p_stream->i_duration = 0;
- p_stream->avc.i_profile = 77;
- p_stream->avc.i_level = 51;
- p_stream->avc.i_sps = 0;
- p_stream->avc.sps = NULL;
- p_stream->avc.i_pps = 0;
- p_stream->avc.pps = NULL;
- p_input->p_sys = p_stream;
- msg_Dbg( p_mux, "adding input" );
- TAB_APPEND( p_sys->i_nb_streams, p_sys->pp_streams, p_stream );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * DelStream:
- *****************************************************************************/
- static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
- {
- msg_Dbg( p_mux, "removing input" );
- return VLC_SUCCESS;
- }
- static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
- {
- mtime_t i_dts;
- int i_stream;
- int i;
- for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
- {
- block_fifo_t *p_fifo = p_mux->pp_inputs[i]->p_fifo;
- block_t *p_buf;
- if( p_fifo->i_depth <= 1 )
- {
- if( p_mux->pp_inputs[i]->p_fmt->i_cat != SPU_ES )
- {
- return -1; // wait that all fifo have at least 2 packets
- }
- /* For SPU, we wait only 1 packet */
- continue;
- }
- p_buf = block_FifoShow( p_fifo );
- if( i_stream < 0 || p_buf->i_dts < i_dts )
- {
- i_dts = p_buf->i_dts;
- i_stream = i;
- }
- }
- if( pi_stream )
- {
- *pi_stream = i_stream;
- }
- if( pi_dts )
- {
- *pi_dts = i_dts;
- }
- return i_stream;
- }
- /*****************************************************************************
- * Mux:
- *****************************************************************************/
- static int Mux( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- for( ;; )
- {
- sout_input_t *p_input;
- int i_stream;
- mp4_stream_t *p_stream;
- block_t *p_data;
- mtime_t i_dts;
- if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
- {
- return( VLC_SUCCESS );
- }
- p_input = p_mux->pp_inputs[i_stream];
- p_stream = (mp4_stream_t*)p_input->p_sys;
- p_data = block_FifoGet( p_input->p_fifo );
- if( p_stream->fmt.i_codec == VLC_FOURCC( 'h', '2', '6', '4' ) )
- {
- ConvertAVC1( p_mux, p_stream, p_data );
- }
- else if( p_stream->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
- {
- p_data = ConvertSUBT( p_mux, p_stream, p_data );
- }
- if( p_stream->fmt.i_cat != SPU_ES )
- {
- /* Fix length of the sample */
- if( p_input->p_fifo->i_depth > 0 )
- {
- block_t *p_next = block_FifoShow( p_input->p_fifo );
- int64_t i_diff = p_next->i_dts - p_data->i_dts;
- if( i_diff < I64C(1000000 ) ) /* protection */
- {
- p_data->i_length = i_diff;
- }
- }
- if( p_data->i_length <= 0 )
- {
- msg_Warn( p_mux, "i_length <= 0" );
- p_stream->i_length_neg += p_data->i_length - 1;
- p_data->i_length = 1;
- }
- else if( p_stream->i_length_neg < 0 )
- {
- int64_t i_recover = __MIN( p_data->i_length / 4, - p_stream->i_length_neg );
- p_data->i_length -= i_recover;
- p_stream->i_length_neg += i_recover;
- }
- }
- /* Save starting time */
- if( p_stream->i_entry_count == 0 )
- {
- p_stream->i_dts_start = p_data->i_dts;
- /* Update global dts_start */
- if( p_sys->i_dts_start <= 0 ||
- p_stream->i_dts_start < p_sys->i_dts_start )
- {
- p_sys->i_dts_start = p_stream->i_dts_start;
- }
- }
- if( p_stream->fmt.i_cat == SPU_ES && p_stream->i_entry_count > 0 )
- {
- int64_t i_length = p_data->i_dts - p_stream->i_last_dts;
- if( i_length <= 0 )
- {
- /* FIXME handle this broken case */
- i_length = 1;
- }
- /* Fix last entry */
- if( p_stream->entry[p_stream->i_entry_count-1].i_length <= 0 )
- {
- p_stream->entry[p_stream->i_entry_count-1].i_length = i_length;
- }
- }
- /* add index entry */
- p_stream->entry[p_stream->i_entry_count].i_pos = p_sys->i_pos;
- p_stream->entry[p_stream->i_entry_count].i_size = p_data->i_buffer;
- p_stream->entry[p_stream->i_entry_count].i_pts_dts=
- __MAX( p_data->i_pts - p_data->i_dts, 0 );
- p_stream->entry[p_stream->i_entry_count].i_length = p_data->i_length;
- p_stream->entry[p_stream->i_entry_count].i_flags = p_data->i_flags;
- p_stream->i_entry_count++;
- /* XXX: -1 to always have 2 entry for easy adding of empty SPU */
- if( p_stream->i_entry_count >= p_stream->i_entry_max - 1 )
- {
- p_stream->i_entry_max += 1000;
- p_stream->entry =
- realloc( p_stream->entry,
- p_stream->i_entry_max * sizeof( mp4_entry_t ) );
- }
- /* update */
- p_stream->i_duration += p_data->i_length;
- p_sys->i_pos += p_data->i_buffer;
- /* Save the DTS */
- p_stream->i_last_dts = p_data->i_dts;
- /* write data */
- sout_AccessOutWrite( p_mux->p_access, p_data );
- if( p_stream->fmt.i_cat == SPU_ES )
- {
- int64_t i_length = p_stream->entry[p_stream->i_entry_count-1].i_length;
- if( i_length != 0 )
- {
- /* TODO */
- msg_Dbg( p_mux, "writing a empty subs" ) ;
- /* Append a idx entry */
- p_stream->entry[p_stream->i_entry_count].i_pos = p_sys->i_pos;
- p_stream->entry[p_stream->i_entry_count].i_size = 3;
- p_stream->entry[p_stream->i_entry_count].i_pts_dts= 0;
- p_stream->entry[p_stream->i_entry_count].i_length = 0;
- p_stream->entry[p_stream->i_entry_count].i_flags = 0;
- /* XXX: No need to grow the entry here */
- p_stream->i_entry_count++;
- /* Fix last dts */
- p_stream->i_last_dts += i_length;
- /* Write a " " */
- p_data = block_New( p_mux, 3 );
- p_data->p_buffer[0] = 0;
- p_data->p_buffer[1] = 1;
- p_data->p_buffer[2] = ' ';
- p_sys->i_pos += p_data->i_buffer;
- sout_AccessOutWrite( p_mux->p_access, p_data );
- }
- /* Fix duration */
- p_stream->i_duration = p_stream->i_last_dts - p_stream->i_dts_start;
- }
- }
- return( VLC_SUCCESS );
- }
- /*****************************************************************************
- *
- *****************************************************************************/
- static block_t *ConvertSUBT( sout_mux_t *p_mux, mp4_stream_t *tk, block_t *p_block )
- {
- p_block = block_Realloc( p_block, 2, p_block->i_buffer );
- /* No trailling ' ' */
- if( p_block->i_buffer > 2 && p_block->p_buffer[p_block->i_buffer-1] == ' ' )
- p_block->i_buffer--;
- p_block->p_buffer[0] = ( (p_block->i_buffer - 2) >> 8 )&0xff;
- p_block->p_buffer[1] = ( (p_block->i_buffer - 2) )&0xff;
- return p_block;
- }
- static void ConvertAVC1( sout_mux_t *p_mux, mp4_stream_t *tk, block_t *p_block )
- {
- uint8_t *last = p_block->p_buffer; /* Assume it starts with 0x00000001 */
- uint8_t *dat = &p_block->p_buffer[4];
- uint8_t *end = &p_block->p_buffer[p_block->i_buffer];
- /* Replace the 4 bytes start code with 4 bytes size,
- * FIXME are all startcode 4 bytes ? (I don't think :( */
- while( dat < end )
- {
- int i_size;
- while( dat < end - 4 )
- {
- if( dat[0] == 0x00 && dat[1] == 0x00 &&
- dat[2] == 0x00 && dat[3] == 0x01 )
- {
- break;
- }
- dat++;
- }
- if( dat >= end - 4 )
- {
- dat = end;
- }
- /* Fix size */
- i_size = dat - &last[4];
- last[0] = ( i_size >> 24 )&0xff;
- last[1] = ( i_size >> 16 )&0xff;
- last[2] = ( i_size >> 8 )&0xff;
- last[3] = ( i_size )&0xff;
- if( (last[4]&0x1f) == 7 && tk->avc.i_sps <= 0 ) /* SPS */
- {
- tk->avc.i_sps = i_size;
- tk->avc.sps = malloc( i_size );
- memcpy( tk->avc.sps, &last[4], i_size );
- tk->avc.i_profile = tk->avc.sps[1];
- tk->avc.i_level = tk->avc.sps[3];
- }
- else if( (last[4]&0x1f) == 8 && tk->avc.i_pps <= 0 ) /* PPS */
- {
- tk->avc.i_pps = i_size;
- tk->avc.pps = malloc( i_size );
- memcpy( tk->avc.pps, &last[4], i_size );
- }
- last = dat;
- dat += 4;
- }
- }
- static int GetDescrLength( int i_size )
- {
- if( i_size < 0x00000080 )
- return 2 + i_size;
- else if( i_size < 0x00004000 )
- return 3 + i_size;
- else if( i_size < 0x00200000 )
- return 4 + i_size;
- else
- return 5 + i_size;
- }
- static bo_t *GetESDS( mp4_stream_t *p_stream )
- {
- bo_t *esds;
- int i_stream_type;
- int i_object_type_indication;
- int i_decoder_specific_info_size;
- unsigned int i;
- int64_t i_bitrate_avg = 0;
- int64_t i_bitrate_max = 0;
- /* Compute avg/max bitrate */
- for( i = 0; i < p_stream->i_entry_count; i++ )
- {
- i_bitrate_avg += p_stream->entry[i].i_size;
- if( p_stream->entry[i].i_length > 0)
- {
- int64_t i_bitrate = I64C(8000000) * p_stream->entry[i].i_size / p_stream->entry[i].i_length;
- if( i_bitrate > i_bitrate_max )
- i_bitrate_max = i_bitrate;
- }
- }
- if( p_stream->i_duration > 0 )
- i_bitrate_avg = I64C(8000000) * i_bitrate_avg / p_stream->i_duration;
- else
- i_bitrate_avg = 0;
- if( i_bitrate_max <= 1 )
- i_bitrate_max = 0x7fffffff;
- /* */
- if( p_stream->fmt.i_extra > 0 )
- {
- i_decoder_specific_info_size =
- GetDescrLength( p_stream->fmt.i_extra );
- }
- else
- {
- i_decoder_specific_info_size = 0;
- }
- esds = box_full_new( "esds", 0, 0 );
- /* ES_Descr */
- bo_add_descr( esds, 0x03, 3 +
- GetDescrLength( 13 + i_decoder_specific_info_size ) +
- GetDescrLength( 1 ) );
- bo_add_16be( esds, p_stream->i_track_id );
- bo_add_8 ( esds, 0x1f ); // flags=0|streamPriority=0x1f
- /* DecoderConfigDescr */
- bo_add_descr( esds, 0x04, 13 + i_decoder_specific_info_size );
- switch( p_stream->fmt.i_codec )
- {
- case VLC_FOURCC( 'm', 'p', '4', 'v' ):
- i_object_type_indication = 0x20;
- break;
- case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
- /* FIXME MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
- i_object_type_indication = 0x60;
- break;
- case VLC_FOURCC( 'm', 'p', '4', 'a' ):
- /* FIXME for mpeg2-aac == 0x66->0x68 */
- i_object_type_indication = 0x40;
- break;
- case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
- i_object_type_indication =
- p_stream->fmt.audio.i_rate < 32000 ? 0x69 : 0x6b;
- break;
- default:
- i_object_type_indication = 0x00;
- break;
- }
- i_stream_type = p_stream->fmt.i_cat == VIDEO_ES ? 0x04 : 0x05;
- bo_add_8 ( esds, i_object_type_indication );
- bo_add_8 ( esds, ( i_stream_type << 2 ) | 1 );
- bo_add_24be( esds, 1024 * 1024 ); // bufferSizeDB
- bo_add_32be( esds, i_bitrate_max ); // maxBitrate
- bo_add_32be( esds, i_bitrate_avg ); // avgBitrate
- if( p_stream->fmt.i_extra > 0 )
- {
- int i;
- /* DecoderSpecificInfo */
- bo_add_descr( esds, 0x05, p_stream->fmt.i_extra );
- for( i = 0; i < p_stream->fmt.i_extra; i++ )
- {
- bo_add_8( esds, ((uint8_t*)p_stream->fmt.p_extra)[i] );
- }
- }
- /* SL_Descr mandatory */
- bo_add_descr( esds, 0x06, 1 );
- bo_add_8 ( esds, 0x02 ); // sl_predefined
- box_fix( esds );
- return esds;
- }
- static bo_t *GetWaveTag( mp4_stream_t *p_stream )
- {
- bo_t *wave;
- bo_t *box;
- wave = box_new( "wave" );
- box = box_new( "frma" );
- bo_add_fourcc( box, "mp4a" );
- box_fix( box );
- box_gather( wave, box );
- box = box_new( "mp4a" );
- bo_add_32be( box, 0 );
- box_fix( box );
- box_gather( wave, box );
- box = GetESDS( p_stream );
- box_fix( box );
- box_gather( wave, box );
- box = box_new( "srcq" );
- bo_add_32be( box, 0x40 );
- box_fix( box );
- box_gather( wave, box );
- /* wazza ? */
- bo_add_32be( wave, 8 ); /* new empty box */
- bo_add_32be( wave, 0 ); /* box label */
- box_fix( wave );
- return wave;
- }
- static bo_t *GetAvcCTag( mp4_stream_t *p_stream )
- {
- bo_t *avcC;
- /* FIXME use better value */
- avcC = box_new( "avcC" );
- bo_add_8( avcC, 1 ); /* configuration version */
- bo_add_8( avcC, p_stream->avc.i_profile );
- bo_add_8( avcC, p_stream->avc.i_profile ); /* profile compatible ??? */
- bo_add_8( avcC, p_stream->avc.i_level ); /* level, 5.1 */
- bo_add_8( avcC, 0xff ); /* 0b11111100 | lengthsize = 0x11 */
- bo_add_8( avcC, 0xe0 | (p_stream->avc.i_sps > 0 ? 1 : 0) ); /* 0b11100000 | sps_count */
- if( p_stream->avc.i_sps > 0 )
- {
- bo_add_16be( avcC, p_stream->avc.i_sps );
- bo_add_mem( avcC, p_stream->avc.i_sps, p_stream->avc.sps );
- }
- bo_add_8( avcC, (p_stream->avc.i_pps > 0 ? 1 : 0) ); /* pps_count */
- if( p_stream->avc.i_pps > 0 )
- {
- bo_add_16be( avcC, p_stream->avc.i_pps );
- bo_add_mem( avcC, p_stream->avc.i_pps, p_stream->avc.pps );
- }
- box_fix( avcC );
- return avcC;
- }
- /* TODO: No idea about these values */
- static bo_t *GetSVQ3Tag( mp4_stream_t *p_stream )
- {
- bo_t *smi = box_new( "SMI " );
- if( p_stream->fmt.i_extra > 0x4e )
- {
- uint8_t *p_end = &((uint8_t*)p_stream->fmt.p_extra)[p_stream->fmt.i_extra];
- uint8_t *p = &((uint8_t*)p_stream->fmt.p_extra)[0x46];
- while( p + 8 < p_end )
- {
- int i_size = GetDWBE( p );
- if( i_size <= 1 )
- {
- /* FIXME handle 1 as long size */
- break;
- }
- if( !strncmp( &p[4], "SMI ", 4 ) )
- {
- bo_add_mem( smi, p_end - p - 8, &p[8] );
- return smi;
- }
- p += i_size;
- }
- }
- /* Create a dummy one in fallback */
- bo_add_fourcc( smi, "SEQH" );
- bo_add_32be( smi, 0x5 );
- bo_add_32be( smi, 0xe2c0211d );
- bo_add_8( smi, 0xc0 );
- box_fix( smi );
- return smi;
- }
- static bo_t *GetUdtaTag( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- bo_t *udta = box_new( "udta" );
- vlc_meta_t *p_meta = p_mux->p_sout->p_meta;
- int i_track;
- /* Requirements */
- for( i_track = 0; i_track < p_sys->i_nb_streams; i_track++ )
- {
- mp4_stream_t *p_stream = p_sys->pp_streams[i_track];
- if( p_stream->fmt.i_codec == VLC_FOURCC('m','p','4','v') ||
- p_stream->fmt.i_codec == VLC_FOURCC('m','p','4','a') )
- {
- bo_t *box = box_new( "251req" );
- /* String length */
- bo_add_16be( box, sizeof("QuickTime 6.0 or greater") - 1);
- bo_add_16be( box, 0 );
- bo_add_mem( box, sizeof("QuickTime 6.0 or greater") - 1,
- "QuickTime 6.0 or greater" );
- box_fix( box );
- box_gather( udta, box );
- break;
- }
- }
- /* Encoder */
- {
- bo_t *box = box_new( "251enc" );
- /* String length */
- bo_add_16be( box, sizeof(PACKAGE_STRING " stream output") - 1);
- bo_add_16be( box, 0 );
- bo_add_mem( box, sizeof(PACKAGE_STRING " stream output") - 1,
- PACKAGE_STRING " stream output" );
- box_fix( box );
- box_gather( udta, box );
- }
- /* Misc atoms */
- if( p_meta )
- {
- int i;
- for( i = 0; i < p_meta->i_meta; i++ )
- {
- bo_t *box = NULL;
- if( !strcmp( p_meta->name[i], VLC_META_TITLE ) )
- box = box_new( "251nam" );
- else if( !strcmp( p_meta->name[i], VLC_META_AUTHOR ) )
- box = box_new( "251aut" );
- else if( !strcmp( p_meta->name[i], VLC_META_ARTIST ) )
- box = box_new( "251ART" );
- else if( !strcmp( p_meta->name[i], VLC_META_GENRE ) )
- box = box_new( "251gen" );
- else if( !strcmp( p_meta->name[i], VLC_META_COPYRIGHT ) )
- box = box_new( "251cpy" );
- else if( !strcmp( p_meta->name[i], VLC_META_DESCRIPTION ) )
- box = box_new( "251des" );
- else if( !strcmp( p_meta->name[i], VLC_META_DATE ) )
- box = box_new( "251day" );
- else if( !strcmp( p_meta->name[i], VLC_META_URL ) )
- box = box_new( "251url" );
- if( box )
- {
- bo_add_16be( box, strlen( p_meta->value[i] ) );
- bo_add_16be( box, 0 );
- bo_add_mem( box, strlen( p_meta->value[i] ),
- p_meta->value[i] );
- box_fix( box );
- box_gather( udta, box );
- }
- }
- }
- box_fix( udta );
- return udta;
- }
- static bo_t *GetSounBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- vlc_bool_t b_descr = VLC_FALSE;
- bo_t *soun;
- char fcc[4] = " ";
- int i;
- switch( p_stream->fmt.i_codec )
- {
- case VLC_FOURCC('m','p','4','a'):
- memcpy( fcc, "mp4a", 4 );
- b_descr = VLC_TRUE;
- break;
- case VLC_FOURCC('m','p','g','a'):
- if( p_sys->b_mov )
- memcpy( fcc, ".mp3", 4 );
- else
- {
- memcpy( fcc, "mp4a", 4 );
- b_descr = VLC_TRUE;
- }
- break;
- default:
- memcpy( fcc, (char*)&p_stream->fmt.i_codec, 4 );
- break;
- }
- soun = box_new( fcc );
- for( i = 0; i < 6; i++ )
- {
- bo_add_8( soun, 0 ); // reserved;
- }
- bo_add_16be( soun, 1 ); // data-reference-index
- /* SoundDescription */
- if( p_sys->b_mov &&
- p_stream->fmt.i_codec == VLC_FOURCC('m','p','4','a') )
- {
- bo_add_16be( soun, 1 ); // version 1;
- }
- else
- {
- bo_add_16be( soun, 0 ); // version 0;
- }
- bo_add_16be( soun, 0 ); // revision level (0)
- bo_add_32be( soun, 0 ); // vendor
- // channel-count
- bo_add_16be( soun, p_stream->fmt.audio.i_channels );
- // sample size
- bo_add_16be( soun, p_stream->fmt.audio.i_bitspersample ?
- p_stream->fmt.audio.i_bitspersample : 16 );
- bo_add_16be( soun, -2 ); // compression id
- bo_add_16be( soun, 0 ); // packet size (0)
- bo_add_16be( soun, p_stream->fmt.audio.i_rate ); // sampleratehi
- bo_add_16be( soun, 0 ); // sampleratelo
- /* Extended data for SoundDescription V1 */
- if( p_sys->b_mov &&
- p_stream->fmt.i_codec == VLC_FOURCC('m','p','4','a') )
- {
- /* samples per packet */
- bo_add_32be( soun, p_stream->fmt.audio.i_frame_length );
- bo_add_32be( soun, 1536 ); /* bytes per packet */
- bo_add_32be( soun, 2 ); /* bytes per frame */
- /* bytes per sample */
- bo_add_32be( soun, 2 /*p_stream->fmt.audio.i_bitspersample/8 */);
- }
- /* Add an ES Descriptor */
- if( b_descr )
- {
- bo_t *box;
- if( p_sys->b_mov &&
- p_stream->fmt.i_codec == VLC_FOURCC('m','p','4','a') )
- {
- box = GetWaveTag( p_stream );
- }
- else
- {
- box = GetESDS( p_stream );
- }
- box_fix( box );
- box_gather( soun, box );
- }
- box_fix( soun );
- return soun;
- }
- static bo_t *GetVideBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
- {
- bo_t *vide;
- char fcc[4] = " ";
- int i;
- switch( p_stream->fmt.i_codec )
- {
- case VLC_FOURCC('m','p','4','v'):
- case VLC_FOURCC('m','p','g','v'):
- memcpy( fcc, "mp4v", 4 );
- break;
- case VLC_FOURCC('M','J','P','G'):
- memcpy( fcc, "mjpa", 4 );
- break;
- case VLC_FOURCC('S','V','Q','1'):
- memcpy( fcc, "SVQ1", 4 );
- break;
- case VLC_FOURCC('S','V','Q','3'):
- memcpy( fcc, "SVQ3", 4 );
- break;
- case VLC_FOURCC('h','2','6','4'):
- memcpy( fcc, "avc1", 4 );
- break;
- default:
- memcpy( fcc, (char*)&p_stream->fmt.i_codec, 4 );
- break;
- }
- vide = box_new( fcc );
- for( i = 0; i < 6; i++ )
- {
- bo_add_8( vide, 0 ); // reserved;
- }
- bo_add_16be( vide, 1 ); // data-reference-index
- bo_add_16be( vide, 0 ); // predefined;
- bo_add_16be( vide, 0 ); // reserved;
- for( i = 0; i < 3; i++ )
- {
- bo_add_32be( vide, 0 ); // predefined;
- }
- bo_add_16be( vide, p_stream->fmt.video.i_width ); // i_width
- bo_add_16be( vide, p_stream->fmt.video.i_height ); // i_height
- bo_add_32be( vide, 0x00480000 ); // h 72dpi
- bo_add_32be( vide, 0x00480000 ); // v 72dpi
- bo_add_32be( vide, 0 ); // data size, always 0
- bo_add_16be( vide, 1 ); // frames count per sample
- // compressor name;
- for( i = 0; i < 32; i++ )
- {
- bo_add_8( vide, 0 );
- }
- bo_add_16be( vide, 0x18 ); // depth
- bo_add_16be( vide, 0xffff ); // predefined
- /* add an ES Descriptor */
- switch( p_stream->fmt.i_codec )
- {
- case VLC_FOURCC('m','p','4','v'):
- case VLC_FOURCC('m','p','g','v'):
- {
- bo_t *esds = GetESDS( p_stream );
- box_fix( esds );
- box_gather( vide, esds );
- }
- break;
- case VLC_FOURCC('S','V','Q','3'):
- {
- bo_t *esds = GetSVQ3Tag( p_stream );
- box_fix( esds );
- box_gather( vide, esds );
- }
- break;
- case VLC_FOURCC('h','2','6','4'):
- box_gather( vide, GetAvcCTag( p_stream ) );
- break;
- default:
- break;
- }
- box_fix( vide );
- return vide;
- }
- static bo_t *GetTextBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
- {
- bo_t *text = box_new( "text" );
- int i;
- for( i = 0; i < 6; i++ )
- {
- bo_add_8( text, 0 ); // reserved;
- }
- bo_add_16be( text, 1 ); // data-reference-index
- bo_add_32be( text, 0 ); // display flags
- bo_add_32be( text, 0 ); // justification
- for( i = 0; i < 3; i++ )
- {
- bo_add_16be( text, 0 ); // back ground color
- }
- bo_add_16be( text, 0 ); // box text
- bo_add_16be( text, 0 ); // box text
- bo_add_16be( text, 0 ); // box text
- bo_add_16be( text, 0 ); // box text
- bo_add_64be( text, 0 ); // reserved
- for( i = 0; i < 3; i++ )
- {
- bo_add_16be( text, 0xff ); // foreground color
- }
- bo_add_8 ( text, 9 );
- bo_add_mem( text, 9, "Helvetica" );
- box_fix( text );
- return text;
- }
- static bo_t *GetStblBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- unsigned int i_chunk, i_stsc_last_val, i_stsc_entries, i, i_index;
- bo_t *stbl, *stsd, *stts, *stco, *stsc, *stsz, *stss;
- uint32_t i_timescale;
- int64_t i_dts, i_dts_q;
- stbl = box_new( "stbl" );
- /* sample description */
- stsd = box_full_new( "stsd", 0, 0 );
- bo_add_32be( stsd, 1 );
- if( p_stream->fmt.i_cat == AUDIO_ES )
- {
- bo_t *soun = GetSounBox( p_mux, p_stream );
- box_gather( stsd, soun );
- }
- else if( p_stream->fmt.i_cat == VIDEO_ES )
- {
- bo_t *vide = GetVideBox( p_mux, p_stream );
- box_gather( stsd, vide );
- }
- else if( p_stream->fmt.i_cat == SPU_ES )
- {
- box_gather( stsd, GetTextBox( p_mux, p_stream ) );
- }
- box_fix( stsd );
- /* chunk offset table */
- if( p_sys->i_pos >= (((uint64_t)0x1) << 32) )
- {
- /* 64 bits version */
- p_stream->b_stco64 = VLC_TRUE;
- stco = box_full_new( "co64", 0, 0 );
- }
- else
- {
- /* 32 bits version */
- p_stream->b_stco64 = VLC_FALSE;
- stco = box_full_new( "stco", 0, 0 );
- }
- bo_add_32be( stco, 0 ); // entry-count (fixed latter)
- /* sample to chunk table */
- stsc = box_full_new( "stsc", 0, 0 );
- bo_add_32be( stsc, 0 ); // entry-count (fixed latter)
- for( i_chunk = 0, i_stsc_last_val = 0, i_stsc_entries = 0, i = 0;
- i < p_stream->i_entry_count; i_chunk++ )
- {
- int i_first = i;
- if( p_stream->b_stco64 )
- bo_add_64be( stco, p_stream->entry[i].i_pos );
- else
- bo_add_32be( stco, p_stream->entry[i].i_pos );
- while( i < p_stream->i_entry_count )
- {
- if( i + 1 < p_stream->i_entry_count &&
- p_stream->entry[i].i_pos + p_stream->entry[i].i_size
- != p_stream->entry[i + 1].i_pos )
- {
- i++;
- break;
- }
- i++;
- }
- /* Add entry to the stsc table */
- if( i_stsc_last_val != i - i_first )
- {
- bo_add_32be( stsc, 1 + i_chunk ); // first-chunk
- bo_add_32be( stsc, i - i_first ) ; // samples-per-chunk
- bo_add_32be( stsc, 1 ); // sample-descr-index
- i_stsc_last_val = i - i_first;
- i_stsc_entries++;
- }
- }
- /* Fix stco entry count */
- bo_fix_32be( stco, 12, i_chunk );
- msg_Dbg( p_mux, "created %d chunks (stco)", i_chunk );
- box_fix( stco );
- /* Fix stsc entry count */
- bo_fix_32be( stsc, 12, i_stsc_entries );
- box_fix( stsc );
- /* add stts */
- stts = box_full_new( "stts", 0, 0 );
- bo_add_32be( stts, 0 ); // entry-count (fixed latter)
- if( p_stream->fmt.i_cat == AUDIO_ES )
- i_timescale = p_stream->fmt.audio.i_rate;
- else
- i_timescale = 1001;
- /* first, create quantified length */
- for( i = 0, i_dts = 0, i_dts_q = 0; i < p_stream->i_entry_count; i++ )
- {
- int64_t i_dts_deq = i_dts_q * I64C(1000000) / (int64_t)i_timescale;
- int64_t i_delta = p_stream->entry[i].i_length + i_dts - i_dts_deq;
- i_dts += p_stream->entry[i].i_length;
- p_stream->entry[i].i_length =
- i_delta * (int64_t)i_timescale / I64C(1000000);
- i_dts_q += p_stream->entry[i].i_length;
- }
- /* then write encoded table */
- for( i = 0, i_index = 0; i < p_stream->i_entry_count; i_index++)
- {
- int i_first = i;
- int64_t i_delta = p_stream->entry[i].i_length;
- while( i < p_stream->i_entry_count )
- {
- i++;
- if( i >= p_stream->i_entry_count ||
- p_stream->entry[i].i_length != i_delta )
- {
- break;
- }
- }
- bo_add_32be( stts, i - i_first ); // sample-count
- bo_add_32be( stts, i_delta ); // sample-delta
- }
- bo_fix_32be( stts, 12, i_index );
- box_fix( stts );
- /* FIXME add ctts ?? FIXME */
- stsz = box_full_new( "stsz", 0, 0 );
- bo_add_32be( stsz, 0 ); // sample-size
- bo_add_32be( stsz, p_stream->i_entry_count ); // sample-count
- for( i = 0; i < p_stream->i_entry_count; i++ )
- {
- bo_add_32be( stsz, p_stream->entry[i].i_size ); // sample-size
- }
- box_fix( stsz );
- /* create stss table */
- stss = NULL;
- for( i = 0, i_index = 0; i < p_stream->i_entry_count; i++ )
- {
- if( p_stream->entry[i].i_flags & BLOCK_FLAG_TYPE_I )
- {
- if( stss == NULL )
- {
- stss = box_full_new( "stss", 0, 0 );
- bo_add_32be( stss, 0 ); /* fixed later */
- }
- bo_add_32be( stss, 1 + i );
- i_index++;
- }
- }
- if( stss )
- {
- bo_fix_32be( stss, 12, i_index );
- box_fix( stss );
- }
- /* Now gather all boxes into stbl */
- box_gather( stbl, stsd );
- box_gather( stbl, stts );
- if( stss )
- {
- box_gather( stbl, stss );
- }
- box_gather( stbl, stsc );
- box_gather( stbl, stsz );
- p_stream->i_stco_pos = stbl->i_buffer + 16;
- box_gather( stbl, stco );
- /* finish stbl */
- box_fix( stbl );
- return stbl;
- }
- static int64_t get_timestamp();
- static uint32_t mvhd_matrix[9] =
- { 0x10000, 0, 0, 0, 0x10000, 0, 0, 0, 0x40000000 };
- static bo_t *GetMoovBox( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- bo_t *moov, *mvhd;
- int i_trak, i;
- uint32_t i_movie_timescale = 90000;
- int64_t i_movie_duration = 0;
- moov = box_new( "moov" );
- /* Create general info */
- for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
- {
- mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
- i_movie_duration = __MAX( i_movie_duration, p_stream->i_duration );
- }
- msg_Dbg( p_mux, "movie duration %ds",
- (uint32_t)( i_movie_duration / (mtime_t)1000000 ) );
- i_movie_duration = i_movie_duration * i_movie_timescale / 1000000;
- /* *** add /moov/mvhd *** */
- if( !p_sys->b_64_ext )
- {
- mvhd = box_full_new( "mvhd", 0, 0 );
- bo_add_32be( mvhd, get_timestamp() ); // creation time
- bo_add_32be( mvhd, get_timestamp() ); // modification time
- bo_add_32be( mvhd, i_movie_timescale); // timescale
- bo_add_32be( mvhd, i_movie_duration ); // duration
- }
- else
- {
- mvhd = box_full_new( "mvhd", 1, 0 );
- bo_add_64be( mvhd, get_timestamp() ); // creation time
- bo_add_64be( mvhd, get_timestamp() ); // modification time
- bo_add_32be( mvhd, i_movie_timescale); // timescale
- bo_add_64be( mvhd, i_movie_duration ); // duration
- }
- bo_add_32be( mvhd, 0x10000 ); // rate
- bo_add_16be( mvhd, 0x100 ); // volume
- bo_add_16be( mvhd, 0 ); // reserved
- for( i = 0; i < 2; i++ )
- {
- bo_add_32be( mvhd, 0 ); // reserved
- }
- for( i = 0; i < 9; i++ )
- {
- bo_add_32be( mvhd, mvhd_matrix[i] );// matrix
- }
- for( i = 0; i < 6; i++ )
- {
- bo_add_32be( mvhd, 0 ); // pre-defined
- }
- /* Next available track id */
- bo_add_32be( mvhd, p_sys->i_nb_streams + 1 ); // next-track-id
- box_fix( mvhd );
- box_gather( moov, mvhd );
- for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
- {
- mp4_stream_t *p_stream;
- uint32_t i_timescale;
- bo_t *trak, *tkhd, *edts, *elst, *mdia, *mdhd, *hdlr;
- bo_t *minf, *dinf, *dref, *url, *stbl;
- p_stream = p_sys->pp_streams[i_trak];
- if( p_stream->fmt.i_cat == AUDIO_ES )
- i_timescale = p_stream->fmt.audio.i_rate;
- else
- i_timescale = 1001;
- /* *** add /moov/trak *** */
- trak = box_new( "trak" );
- /* *** add /moov/trak/tkhd *** */
- if( !p_sys->b_64_ext )
- {
- if( p_sys->b_mov )
- tkhd = box_full_new( "tkhd", 0, 0x0f );
- else
- tkhd = box_full_new( "tkhd", 0, 1 );
- bo_add_32be( tkhd, get_timestamp() ); // creation time
- bo_add_32be( tkhd, get_timestamp() ); // modification time
- bo_add_32be( tkhd, p_stream->i_track_id );
- bo_add_32be( tkhd, 0 ); // reserved 0
- bo_add_32be( tkhd, p_stream->i_duration *
- (int64_t)i_movie_timescale /
- (mtime_t)1000000 ); // duration
- }
- else
- {
- if( p_sys->b_mov )
- tkhd = box_full_new( "tkhd", 1, 0x0f );
- else
- tkhd = box_full_new( "tkhd", 1, 1 );
- bo_add_64be( tkhd, get_timestamp() ); // creation time
- bo_add_64be( tkhd, get_timestamp() ); // modification time
- bo_add_32be( tkhd, p_stream->i_track_id );
- bo_add_32be( tkhd, 0 ); // reserved 0
- bo_add_64be( tkhd, p_stream->i_duration *
- (int64_t)i_movie_timescale /
- (mtime_t)1000000 ); // duration
- }
- for( i = 0; i < 2; i++ )
- {
- bo_add_32be( tkhd, 0 ); // reserved
- }
- bo_add_16be( tkhd, 0 ); // layer
- bo_add_16be( tkhd, 0 ); // pre-defined
- // volume
- bo_add_16be( tkhd, p_stream->fmt.i_cat == AUDIO_ES ? 0x100 : 0 );
- bo_add_16be( tkhd, 0 ); // reserved
- for( i = 0; i < 9; i++ )
- {
- bo_add_32be( tkhd, mvhd_matrix[i] ); // matrix
- }
- if( p_stream->fmt.i_cat == AUDIO_ES )
- {
- bo_add_32be( tkhd, 0 ); // width (presentation)
- bo_add_32be( tkhd, 0 ); // height(presentation)
- }
- else if( p_stream->fmt.i_cat == VIDEO_ES )
- {
- int i_width = p_stream->fmt.video.i_width << 16;
- if( p_stream->fmt.video.i_aspect > 0 )
- {
- i_width = (int64_t)p_stream->fmt.video.i_aspect *
- ((int64_t)p_stream->fmt.video.i_height << 16) /
- VOUT_ASPECT_FACTOR;
- }
- // width (presentation)
- bo_add_32be( tkhd, i_width );
- // height(presentation)
- bo_add_32be( tkhd, p_stream->fmt.video.i_height << 16 );
- }
- else
- {
- int i_width = 320 << 16;
- int i_height = 200;
- int i;
- for( i = 0; i < p_sys->i_nb_streams; i++ )
- {
- mp4_stream_t *tk = p_sys->pp_streams[i];
- if( tk->fmt.i_cat == VIDEO_ES )
- {
- if( p_stream->fmt.video.i_aspect )
- i_width = (int64_t)p_stream->fmt.video.i_aspect *
- ((int64_t)p_stream->fmt.video.i_height<<16) / VOUT_ASPECT_FACTOR;
- else
- i_width = p_stream->fmt.video.i_width << 16;
- i_height = p_stream->fmt.video.i_height;
- break;
- }
- }
- bo_add_32be( tkhd, i_width ); // width (presentation)
- bo_add_32be( tkhd, i_height << 16 ); // height(presentation)
- }
- box_fix( tkhd );
- box_gather( trak, tkhd );
- /* *** add /moov/trak/edts and elst */
- edts = box_new( "edts" );
- elst = box_full_new( "elst", p_sys->b_64_ext ? 1 : 0, 0 );
- if( p_stream->i_dts_start > p_sys->i_dts_start )
- {
- bo_add_32be( elst, 2 );
- if( p_sys->b_64_ext )
- {
- bo_add_64be( elst, (p_stream->i_dts_start-p_sys->i_dts_start) *
- i_movie_timescale / I64C(1000000) );
- bo_add_64be( elst, -1 );
- }
- else
- {
- bo_add_32be( elst, (p_stream->i_dts_start-p_sys->i_dts_start) *
- i_movie_timescale / I64C(1000000) );
- bo_add_32be( elst, -1 );
- }
- bo_add_16be( elst, 1 );
- bo_add_16be( elst, 0 );
- }
- else
- {
- bo_add_32be( elst, 1 );
- }
- if( p_sys->b_64_ext )
- {
- bo_add_64be( elst, p_stream->i_duration *
- i_movie_timescale / I64C(1000000) );
- bo_add_64be( elst, 0 );
- }
- else
- {
- bo_add_32be( elst, p_stream->i_duration *
- i_movie_timescale / I64C(1000000) );
- bo_add_32be( elst, 0 );
- }
- bo_add_16be( elst, 1 );
- bo_add_16be( elst, 0 );
- box_fix( elst );
- box_gather( edts, elst );
- box_fix( edts );
- box_gather( trak, edts );
- /* *** add /moov/trak/mdia *** */
- mdia = box_new( "mdia" );
- /* media header */
- if( !p_sys->b_64_ext )
- {
- mdhd = box_full_new( "mdhd", 0, 0 );
- bo_add_32be( mdhd, get_timestamp() ); // creation time
- bo_add_32be( mdhd, get_timestamp() ); // modification time
- bo_add_32be( mdhd, i_timescale); // timescale
- bo_add_32be( mdhd, p_stream->i_duration * (int64_t)i_timescale /
- (mtime_t)1000000 ); // duration
- }
- else
- {
- mdhd = box_full_new( "mdhd", 1, 0 );
- bo_add_64be( mdhd, get_timestamp() ); // creation time
- bo_add_64be( mdhd, get_timestamp() ); // modification time
- bo_add_32be( mdhd, i_timescale); // timescale
- bo_add_64be( mdhd, p_stream->i_duration * (int64_t)i_timescale /
- (mtime_t)1000000 ); // duration
- }
- if( p_stream->fmt.psz_language )
- {
- char *psz = p_stream->fmt.psz_language;
- const iso639_lang_t *pl = NULL;
- uint16_t lang = 0x0;
- if( strlen( psz ) == 2 )
- {
- pl = GetLang_1( psz );
- }
- else if( strlen( psz ) == 3 )
- {
- pl = GetLang_2B( psz );
- if( !strcmp( pl->psz_iso639_1, "??" ) )
- {
- pl = GetLang_2T( psz );
- }
- }
- if( pl && strcmp( pl->psz_iso639_1, "??" ) )
- {
- lang = ( ( pl->psz_iso639_2T[0] - 0x60 ) << 10 ) |
- ( ( pl->psz_iso639_2T[1] - 0x60 ) << 5 ) |
- ( ( pl->psz_iso639_2T[2] - 0x60 ) );
- }
- bo_add_16be( mdhd, lang ); // language
- }
- else
- {
- bo_add_16be( mdhd, 0 ); // language
- }
- bo_add_16be( mdhd, 0 ); // predefined
- box_fix( mdhd );
- box_gather( mdia, mdhd );
- /* handler reference */
- hdlr = box_full_new( "hdlr", 0, 0 );
- if( p_sys->b_mov )
- bo_add_fourcc( hdlr, "mhlr" ); // media handler
- else
- bo_add_32be( hdlr, 0 );
- if( p_stream->fmt.i_cat == AUDIO_ES )
- bo_add_fourcc( hdlr, "soun" );
- else if( p_stream->fmt.i_cat == VIDEO_ES )
- bo_add_fourcc( hdlr, "vide" );
- else if( p_stream->fmt.i_cat == SPU_ES )
- bo_add_fourcc( hdlr, "text" );
- bo_add_32be( hdlr, 0 ); // reserved
- bo_add_32be( hdlr, 0 ); // reserved
- bo_add_32be( hdlr, 0 ); // reserved
- if( p_sys->b_mov )
- bo_add_8( hdlr, 12 ); /* Pascal string for .mov */
- if( p_stream->fmt.i_cat == AUDIO_ES )
- bo_add_mem( hdlr, 12, "SoundHandler" );
- else if( p_stream->fmt.i_cat == VIDEO_ES )
- bo_add_mem( hdlr, 12, "VideoHandler" );
- else
- bo_add_mem( hdlr, 12, "Text Handler" );
- if( !p_sys->b_mov )
- bo_add_8( hdlr, 0 ); /* asciiz string for .mp4, yes that's BRAIN DAMAGED F**K MP4 */
- box_fix( hdlr );
- box_gather( mdia, hdlr );
- /* minf*/
- minf = box_new( "minf" );
- /* add smhd|vmhd */
- if( p_stream->fmt.i_cat == AUDIO_ES )
- {
- bo_t *smhd;
- smhd = box_full_new( "smhd", 0, 0 );
- bo_add_16be( smhd, 0 ); // balance
- bo_add_16be( smhd, 0 ); // reserved
- box_fix( smhd );
- box_gather( minf, smhd );
- }
- else if( p_stream->fmt.i_cat == VIDEO_ES )
- {
- bo_t *vmhd;
- vmhd = box_full_new( "vmhd", 0, 1 );
- bo_add_16be( vmhd, 0 ); // graphicsmode
- for( i = 0; i < 3; i++ )
- {
- bo_add_16be( vmhd, 0 ); // opcolor
- }
- box_fix( vmhd );
- box_gather( minf, vmhd );
- }
- else if( p_stream->fmt.i_cat == SPU_ES )
- {
- bo_t *gmhd = box_new( "gmhd" );
- bo_t *gmin = box_full_new( "gmin", 0, 1 );
- bo_add_16be( gmin, 0 ); // graphicsmode
- for( i = 0; i < 3; i++ )
- {
- bo_add_16be( gmin, 0 ); // opcolor
- }
- bo_add_16be( gmin, 0 ); // balance
- bo_add_16be( gmin, 0 ); // reserved
- box_fix( gmin );
- box_gather( gmhd, gmin );
- box_fix( gmhd );
- box_gather( minf, gmhd );
- }
- /* dinf */
- dinf = box_new( "dinf" );
- dref = box_full_new( "dref", 0, 0 );
- bo_add_32be( dref, 1 );
- url = box_full_new( "url ", 0, 0x01 );
- box_fix( url );
- box_gather( dref, url );
- box_fix( dref );
- box_gather( dinf, dref );
- /* append dinf to mdia */
- box_fix( dinf );
- box_gather( minf, dinf );
- /* add stbl */
- stbl = GetStblBox( p_mux, p_stream );
- /* append stbl to minf */
- p_stream->i_stco_pos += minf->i_buffer;
- box_gather( minf, stbl );
- /* append minf to mdia */
- box_fix( minf );
- p_stream->i_stco_pos += mdia->i_buffer;
- box_gather( mdia, minf );
- /* append mdia to trak */
- box_fix( mdia );
- p_stream->i_stco_pos += trak->i_buffer;
- box_gather( trak, mdia );
- /* append trak to moov */
- box_fix( trak );
- p_stream->i_stco_pos += moov->i_buffer;
- box_gather( moov, trak );
- }
- /* Add user data tags */
- box_gather( moov, GetUdtaTag( p_mux ) );
- box_fix( moov );
- return moov;
- }
- /****************************************************************************/
- static void bo_init( bo_t *p_bo, int i_size, uint8_t *p_buffer,
- vlc_bool_t b_grow )
- {
- if( !p_buffer )
- {
- p_bo->i_buffer_size = __MAX( i_size, 1024 );
- p_bo->p_buffer = malloc( p_bo->i_buffer_size );
- }
- else
- {
- p_bo->i_buffer_size = i_size;
- p_bo->p_buffer = p_buffer;
- }
- p_bo->b_grow = b_grow;
- p_bo->i_buffer = 0;
- }
- static void bo_add_8( bo_t *p_bo, uint8_t i )
- {
- if( p_bo->i_buffer < p_bo->i_buffer_size )
- {
- p_bo->p_buffer[p_bo->i_buffer] = i;
- }
- else if( p_bo->b_grow )
- {
- p_bo->i_buffer_size += 1024;
- p_bo->p_buffer = realloc( p_bo->p_buffer, p_bo->i_buffer_size );
- p_bo->p_buffer[p_bo->i_buffer] = i;
- }
- p_bo->i_buffer++;
- }
- static void bo_add_16be( bo_t *p_bo, uint16_t i )
- {
- bo_add_8( p_bo, ( ( i >> 8) &0xff ) );
- bo_add_8( p_bo, i &0xff );
- }
- static void bo_add_24be( bo_t *p_bo, uint32_t i )
- {
- bo_add_8( p_bo, ( ( i >> 16) &0xff ) );
- bo_add_8( p_bo, ( ( i >> 8) &0xff ) );
- bo_add_8( p_bo, ( i &0xff ) );
- }
- static void bo_add_32be( bo_t *p_bo, uint32_t i )
- {
- bo_add_16be( p_bo, ( ( i >> 16) &0xffff ) );
- bo_add_16be( p_bo, i &0xffff );
- }
- static void bo_fix_32be ( bo_t *p_bo, int i_pos, uint32_t i)
- {
- p_bo->p_buffer[i_pos ] = ( i >> 24 )&0xff;
- p_bo->p_buffer[i_pos + 1] = ( i >> 16 )&0xff;
- p_bo->p_buffer[i_pos + 2] = ( i >> 8 )&0xff;
- p_bo->p_buffer[i_pos + 3] = ( i )&0xff;
- }
- static void bo_add_64be( bo_t *p_bo, uint64_t i )
- {
- bo_add_32be( p_bo, ( ( i >> 32) &0xffffffff ) );
- bo_add_32be( p_bo, i &0xffffffff );
- }
- static void bo_add_fourcc( bo_t *p_bo, char *fcc )
- {
- bo_add_8( p_bo, fcc[0] );
- bo_add_8( p_bo, fcc[1] );
- bo_add_8( p_bo, fcc[2] );
- bo_add_8( p_bo, fcc[3] );
- }
- static void bo_add_mem( bo_t *p_bo, int i_size, uint8_t *p_mem )
- {
- int i;
- for( i = 0; i < i_size; i++ )
- {
- bo_add_8( p_bo, p_mem[i] );
- }
- }
- static void bo_add_descr( bo_t *p_bo, uint8_t tag, uint32_t i_size )
- {
- uint32_t i_length;
- uint8_t vals[4];
- i_length = i_size;
- vals[3] = (unsigned char)(i_length & 0x7f);
- i_length >>= 7;
- vals[2] = (unsigned char)((i_length & 0x7f) | 0x80);
- i_length >>= 7;
- vals[1] = (unsigned char)((i_length & 0x7f) | 0x80);
- i_length >>= 7;
- vals[0] = (unsigned char)((i_length & 0x7f) | 0x80);
- bo_add_8( p_bo, tag );
- if( i_size < 0x00000080 )
- {
- bo_add_8( p_bo, vals[3] );
- }
- else if( i_size < 0x00004000 )
- {
- bo_add_8( p_bo, vals[2] );
- bo_add_8( p_bo, vals[3] );
- }
- else if( i_size < 0x00200000 )
- {
- bo_add_8( p_bo, vals[1] );
- bo_add_8( p_bo, vals[2] );
- bo_add_8( p_bo, vals[3] );
- }
- else if( i_size < 0x10000000 )
- {
- bo_add_8( p_bo, vals[0] );
- bo_add_8( p_bo, vals[1] );
- bo_add_8( p_bo, vals[2] );
- bo_add_8( p_bo, vals[3] );
- }
- }
- static void bo_add_bo( bo_t *p_bo, bo_t *p_bo2 )
- {
- int i;
- for( i = 0; i < p_bo2->i_buffer; i++ )
- {
- bo_add_8( p_bo, p_bo2->p_buffer[i] );
- }
- }
- static bo_t * box_new( char *fcc )
- {
- bo_t *box;
- if( ( box = malloc( sizeof( bo_t ) ) ) )
- {
- bo_init( box, 0, NULL, VLC_TRUE );
- bo_add_32be ( box, 0 );
- bo_add_fourcc( box, fcc );
- }
- return box;
- }
- static bo_t * box_full_new( char *fcc, uint8_t v, uint32_t f )
- {
- bo_t *box;
- if( ( box = malloc( sizeof( bo_t ) ) ) )
- {
- bo_init( box, 0, NULL, VLC_TRUE );
- bo_add_32be ( box, 0 );
- bo_add_fourcc( box, fcc );
- bo_add_8 ( box, v );
- bo_add_24be ( box, f );
- }
- return box;
- }
- static void box_fix( bo_t *box )
- {
- bo_t box_tmp;
- memcpy( &box_tmp, box, sizeof( bo_t ) );
- box_tmp.i_buffer = 0;
- bo_add_32be( &box_tmp, box->i_buffer );
- }
- static void box_free( bo_t *box )
- {
- if( box->p_buffer )
- {
- free( box->p_buffer );
- }
- free( box );
- }
- static void box_gather ( bo_t *box, bo_t *box2 )
- {
- bo_add_bo( box, box2 );
- box_free( box2 );
- }
- static block_t * bo_to_sout( sout_instance_t *p_sout, bo_t *box )
- {
- block_t *p_buf;
- p_buf = block_New( p_sout, box->i_buffer );
- if( box->i_buffer > 0 )
- {
- memcpy( p_buf->p_buffer, box->p_buffer, box->i_buffer );
- }
- return p_buf;
- }
- static void box_send( sout_mux_t *p_mux, bo_t *box )
- {
- block_t *p_buf;
- p_buf = bo_to_sout( p_mux->p_sout, box );
- box_free( box );
- sout_AccessOutWrite( p_mux->p_access, p_buf );
- }
- static int64_t get_timestamp()
- {
- int64_t i_timestamp = 0;
- #ifdef HAVE_TIME_H
- i_timestamp = time(NULL);
- i_timestamp += 2082844800; // MOV/MP4 start date is 1/1/1904
- // 208284480 is (((1970 - 1904) * 365) + 17) * 24 * 60 * 60
- #endif
- return i_timestamp;
- }