* rawdv.c : raw dv input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
- * $Id: rawdv.c,v 1.11 2003/11/24 00:39:01 fenrir Exp $
+ * $Id: rawdv.c,v 1.12 2003/11/24 19:19:02 fenrir Exp $
*
* Authors: Gildas Bazin <gbazin@netcourrier.com>
*
* 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
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
-#include <string.h> /* strdup() */
-#include <errno.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
-#include <sys/types.h>
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+
+vlc_module_begin();
+ set_description( _("raw dv demuxer") );
+ set_capability( "demux", 2 );
+ set_callbacks( Open, Close );
+ add_shortcut( "rawdv" );
+vlc_module_end();
-#include <codecs.h> /* BITMAPINFOHEADER, WAVEFORMATEX */
/*****************************************************************************
A little bit of background information (copied over from libdv glossary).
- DIF block: A block of 80 bytes. This is the basic data framing unit of the
DVC tape format, analogous to sectors of hard disc.
-
+
- Video Section: Each DIF sequence contains a video section, consisting of
135 DIF blocks, which are further subdivided into Video Segments.
{
int frame_size;
- es_descriptor_t *p_video_es;
- es_descriptor_t *p_audio_es;
+ es_out_id_t *p_es_video;
+ es_format_t fmt_video;
- /* codec specific stuff */
- BITMAPINFOHEADER *p_bih;
- WAVEFORMATEX *p_wf;
+ es_out_id_t *p_es_audio;
+ es_format_t fmt_audio;
double f_rate;
int i_bitrate;
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static int Activate ( vlc_object_t * );
-static void Deactivate( vlc_object_t * );
static int Demux ( input_thread_t * );
/*****************************************************************************
- * Module descriptor
+ * Open: initializes raw dv demux structures
*****************************************************************************/
-vlc_module_begin();
- set_description( _("raw dv demuxer") );
- set_capability( "demux", 2 );
- set_callbacks( Activate, NULL );
- add_shortcut( "rawdv" );
-vlc_module_end();
-
-/*****************************************************************************
- * Activate: initializes raw dv demux structures
- *****************************************************************************/
-static int Activate( vlc_object_t * p_this )
+static int Open( vlc_object_t * p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
+ demux_sys_t *p_sys;
+
byte_t *p_peek, *p_peek_backup;
+
uint32_t i_dword;
- demux_sys_t *p_rawdv;
dv_header_t dv_header;
dv_id_t dv_id;
char *psz_ext;
if( ( !psz_ext || strcasecmp( psz_ext, ".dv") )&&
( !p_input->psz_demux || strcmp(p_input->psz_demux, "rawdv") ) )
{
- return -1;
+ return VLC_EGENERIC;
}
- p_input->pf_demux = Demux;
- p_input->pf_demux_control = demux_vaControlDefault;
-
- /* Have a peep at the show. */
- if( input_Peek(p_input, &p_peek, DV_PAL_FRAME_SIZE) < DV_NTSC_FRAME_SIZE )
+ if( stream_Peek( p_input->s, &p_peek, DV_PAL_FRAME_SIZE ) < DV_NTSC_FRAME_SIZE )
{
/* Stream too short ... */
msg_Err( p_input, "cannot peek()" );
- return -1;
+ return VLC_EGENERIC;
}
p_peek_backup = p_peek;
if( dv_id.sct != 0 )
{
msg_Warn( p_input, "not a raw dv stream header" );
- return -1;
+ return VLC_EGENERIC;
}
/* fill in the dv_header_t structure */
if( i_dword >> (32 - 1) ) /* incorrect bit */
{
msg_Warn( p_input, "incorrect bit" );
- return -1;
+ return VLC_EGENERIC;
}
i_dword = GetDWBE( p_peek ); p_peek += 4;
p_peek += 72; /* skip rest of DIF block */
- /* Setup the structures for our demuxer */
- if( !( p_rawdv = malloc( sizeof( demux_sys_t ) ) ) )
- {
- msg_Err( p_input, "out of memory" );
- return -1;
- }
- memset( p_rawdv, 0, sizeof( demux_sys_t ) );
- p_rawdv->p_bih = NULL;
- p_rawdv->p_wf = NULL;
- p_input->p_demux_data = p_rawdv;
+ /* Set p_input field */
+ p_input->pf_demux = Demux;
+ p_input->pf_demux_control = demux_vaControlDefault;
+ p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
- p_rawdv->p_bih = (BITMAPINFOHEADER *) malloc( sizeof(BITMAPINFOHEADER) );
- if( !p_rawdv->p_bih )
- {
- msg_Err( p_input, "out of memory" );
- goto error;
- }
- p_rawdv->p_bih->biSize = sizeof(BITMAPINFOHEADER);
- p_rawdv->p_bih->biCompression = VLC_FOURCC( 'd','v','s','d' );
- p_rawdv->p_bih->biSize = 40;
- p_rawdv->p_bih->biWidth = 720;
- p_rawdv->p_bih->biHeight = dv_header.dsf ? 576 : 480;
- p_rawdv->p_bih->biPlanes = 1;
- p_rawdv->p_bih->biBitCount = 24;
- p_rawdv->p_bih->biSizeImage =
- p_rawdv->p_bih->biWidth * p_rawdv->p_bih->biHeight
- * (p_rawdv->p_bih->biBitCount >> 3);
-
- /* Properties of our video */
- if( dv_header.dsf )
- {
- p_rawdv->frame_size = 12 * 150 * 80;
- p_rawdv->f_rate = 25;
- }
- else
- {
- p_rawdv->frame_size = 10 * 150 * 80;
- p_rawdv->f_rate = 29.97;
- }
+ p_sys->frame_size = dv_header.dsf ? 12 * 150 * 80 : 10 * 150 * 80;
+ p_sys->f_rate = dv_header.dsf ? 25 : 29.97;
+
+ p_sys->i_pcr = 0;
+ p_sys->p_es_video = NULL;
+ p_sys->p_es_audio = NULL;
+
+ p_sys->i_bitrate = 0;
+
+ es_format_Init( &p_sys->fmt_video, VIDEO_ES, VLC_FOURCC( 'd','v','s','d' ) );
+ p_sys->fmt_video.video.i_width = 720;
+ p_sys->fmt_video.video.i_height= dv_header.dsf ? 576 : 480;;
/* Audio stuff */
#if 0
}
#endif
- p_rawdv->p_wf = (WAVEFORMATEX *)malloc( sizeof(WAVEFORMATEX) );
- if( !p_rawdv->p_wf )
- {
- msg_Err( p_input, "out of memory" );
- goto error;
- }
-
- p_rawdv->p_wf->wFormatTag = 0;
- p_rawdv->p_wf->nChannels = 2;
- p_rawdv->p_wf->nSamplesPerSec = 44100; /* FIXME */
- p_rawdv->p_wf->nAvgBytesPerSec = p_rawdv->f_rate * p_rawdv->frame_size;
- p_rawdv->p_wf->nBlockAlign = p_rawdv->frame_size;
- p_rawdv->p_wf->wBitsPerSample = 16;
- p_rawdv->p_wf->cbSize = 0;
-
+ es_format_Init( &p_sys->fmt_audio, AUDIO_ES, VLC_FOURCC( 'd','v','a','u' ) );
+ p_sys->fmt_audio.audio.i_channels = 2;
+ p_sys->fmt_audio.audio.i_rate = 44100; /* FIXME */
+ p_sys->fmt_audio.audio.i_bitspersample = 16;
+ p_sys->fmt_audio.audio.i_blockalign = p_sys->frame_size; /* ??? */
+ p_sys->fmt_audio.i_bitrate = p_sys->f_rate * p_sys->frame_size; /* ??? */
/* necessary because input_SplitBuffer() will only get
* INPUT_DEFAULT_BUFSIZE bytes at a time. */
- p_input->i_bufsize = p_rawdv->frame_size;
+ p_input->i_bufsize = p_sys->frame_size;
- /* Create one program */
vlc_mutex_lock( &p_input->stream.stream_lock );
if( input_InitStream( p_input, 0 ) == -1)
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot init stream" );
- goto error;
+ free( p_sys );
+ return VLC_EGENERIC;
}
- if( input_AddProgram( p_input, 0, 0) == NULL )
- {
- vlc_mutex_unlock( &p_input->stream.stream_lock );
- msg_Err( p_input, "cannot add program" );
- goto error;
- }
- p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
- p_input->stream.i_mux_rate = p_rawdv->frame_size * p_rawdv->f_rate;
+ p_input->stream.i_mux_rate = p_sys->frame_size * p_sys->f_rate;
vlc_mutex_unlock( &p_input->stream.stream_lock );
- /* Add video stream */
- vlc_mutex_lock( &p_input->stream.stream_lock );
- p_rawdv->p_video_es = input_AddES( p_input,
- p_input->stream.p_selected_program,
- 1, VIDEO_ES, NULL, 0 );
- p_rawdv->p_video_es->i_stream_id = 0;
- p_rawdv->p_video_es->i_fourcc = VLC_FOURCC( 'd','v','s','d' );
- p_rawdv->p_video_es->p_bitmapinfoheader = (void *)p_rawdv->p_bih;
- input_SelectES( p_input, p_rawdv->p_video_es );
- vlc_mutex_unlock( &p_input->stream.stream_lock );
+ p_sys->p_es_video = es_out_Add( p_input->p_es_out, &p_sys->fmt_video );
+ p_sys->p_es_audio = es_out_Add( p_input->p_es_out, &p_sys->fmt_audio );
- /* Add audio stream */
- vlc_mutex_lock( &p_input->stream.stream_lock );
- p_rawdv->p_audio_es = input_AddES( p_input,
- p_input->stream.p_selected_program,
- 2, AUDIO_ES, NULL, 0 );
- p_rawdv->p_audio_es->i_stream_id = 1;
- p_rawdv->p_audio_es->i_fourcc = VLC_FOURCC( 'd','v','a','u' );
- p_rawdv->p_audio_es->p_waveformatex = (void *)p_rawdv->p_wf;
- input_SelectES( p_input, p_rawdv->p_audio_es );
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-
- /* Init pcr */
- p_rawdv->i_pcr = 0;
-
- return 0;
-
- error:
- if( p_rawdv->p_bih ) free( p_rawdv->p_bih );
- if( p_rawdv->p_wf ) free( p_rawdv->p_wf );
- Deactivate( (vlc_object_t *)p_input );
- return -1;
+ return VLC_SUCCESS;
}
/*****************************************************************************
- * Deactivate: frees unused data
+ * Close: frees unused data
*****************************************************************************/
-static void Deactivate( vlc_object_t *p_this )
+static void Close( vlc_object_t *p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
- demux_sys_t *p_rawdv = (demux_sys_t *)p_input->p_demux_data;
+ demux_sys_t *p_sys = p_input->p_demux_data;
- free( p_rawdv );
+ free( p_sys );
}
/*****************************************************************************
*****************************************************************************/
static int Demux( input_thread_t * p_input )
{
- demux_sys_t *p_rawdv = (demux_sys_t *)p_input->p_demux_data;
- pes_packet_t *p_pes = NULL;
- pes_packet_t *p_audio_pes = NULL;
- data_packet_t *p_data;
- ssize_t i_read;
+ demux_sys_t *p_sys = p_input->p_demux_data;
+ block_t *p_block;
+ vlc_bool_t b_audio, b_video;
+
if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
{
- off_t i_pos;
+ off_t i_pos = stream_Tell( p_input->s );
msg_Warn( p_input, "synchro reinit" );
/* If the user tried to seek in the stream, we need to make sure
* the new position is at a DIF block boundary. */
- vlc_mutex_lock( &p_input->stream.stream_lock );
- i_pos= p_input->stream.p_selected_area->i_tell;
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-
- if( (i_pos % p_rawdv->frame_size) &&
- p_input->stream.b_seekable &&
- p_input->stream.i_method == INPUT_METHOD_FILE )
+ if( i_pos % p_sys->frame_size > 0 )
{
- p_input->pf_seek( p_input, (i_pos / p_rawdv->frame_size)
- * p_rawdv->frame_size );
- input_AccessReinit( p_input );
+ i_pos += p_sys->frame_size - i_pos % p_sys->frame_size;
+
+ if( stream_Seek( p_input->s, i_pos ) )
+ {
+ msg_Warn( p_input, "cannot resynch after seek (EOF?)" );
+ return -1;
+ }
}
}
/* Call the pace control */
input_ClockManageRef( p_input, p_input->stream.p_selected_program,
- p_rawdv->i_pcr );
+ p_sys->i_pcr );
- i_read = input_SplitBuffer( p_input, &p_data, p_rawdv->frame_size );
- if( i_read <= 0 )
+ if( ( p_block = stream_Block( p_input->s, p_sys->frame_size ) ) == NULL )
{
- return i_read;
+ /* EOF */
+ return 0;
}
- /* Build video PES packet */
- if( p_rawdv->p_video_es->p_dec )
+ es_out_Control( p_input->p_es_out, ES_OUT_GET_SELECT,
+ p_sys->p_es_audio, &b_audio );
+ es_out_Control( p_input->p_es_out, ES_OUT_GET_SELECT,
+ p_sys->p_es_video, &b_video );
+
+ p_block->i_dts =
+ p_block->i_pts = input_ClockGetTS( p_input,
+ p_input->stream.p_selected_program,
+ p_sys->i_pcr );
+ if( b_audio && b_video )
{
- p_pes = input_NewPES( p_input->p_method_data );
- if( p_pes == NULL )
+ block_t *p_dup = block_Duplicate( p_block );
+
+ es_out_Send( p_input->p_es_out, p_sys->p_es_video, p_block );
+ if( p_dup )
{
- msg_Err( p_input, "out of memory" );
- input_DeletePacket( p_input->p_method_data, p_data );
- return -1;
+ es_out_Send( p_input->p_es_out, p_sys->p_es_video, p_dup );
}
-
- p_pes->i_rate = p_input->stream.control.i_rate;
- p_pes->p_first = p_pes->p_last = p_data;
- p_pes->i_pes_size = i_read;
- p_pes->i_nb_data = 1;
- p_pes->i_pts =
- input_ClockGetTS( p_input, p_input->stream.p_selected_program,
- p_rawdv->i_pcr );
}
-
- /* Do the same for audio */
- if( p_rawdv->p_audio_es->p_dec )
+ else if( b_audio )
{
- p_audio_pes = input_NewPES( p_input->p_method_data );
- if( p_audio_pes == NULL )
- {
- msg_Err( p_input, "out of memory" );
- input_DeletePacket( p_input->p_method_data, p_data );
- return -1;
- }
- p_audio_pes->i_rate = p_input->stream.control.i_rate;
-
- if( p_rawdv->p_video_es->p_dec )
- p_audio_pes->p_first = p_audio_pes->p_last =
- input_ShareBuffer( p_input->p_method_data, p_data->p_buffer );
- else
- p_audio_pes->p_first = p_audio_pes->p_last = p_data;
-
- p_audio_pes->p_first->p_next = p_data->p_next;
- p_audio_pes->p_first->p_payload_start = p_data->p_payload_start;
- p_audio_pes->p_first->p_payload_end = p_data->p_payload_end;
- p_audio_pes->i_pes_size = i_read;
- p_audio_pes->i_nb_data = 1;
- p_audio_pes->i_pts =
- input_ClockGetTS( p_input, p_input->stream.p_selected_program,
- p_rawdv->i_pcr );
+ es_out_Send( p_input->p_es_out, p_sys->p_es_audio, p_block );
+ }
+ else if( b_video )
+ {
+ es_out_Send( p_input->p_es_out, p_sys->p_es_video, p_block );
+ }
+ else
+ {
+ block_Release( p_block );
}
- /* Decode PES packets if stream is selected */
- if( p_rawdv->p_video_es->p_dec )
- input_DecodePES( p_rawdv->p_video_es->p_dec, p_pes );
- if( p_rawdv->p_audio_es->p_dec )
- input_DecodePES( p_rawdv->p_audio_es->p_dec, p_audio_pes );
-
- p_rawdv->i_pcr += ( 90000 / p_rawdv->f_rate );
-
- if( !p_rawdv->p_video_es->p_dec &&
- !p_rawdv->p_audio_es->p_dec )
- input_DeletePacket( p_input->p_method_data, p_data );
+ p_sys->i_pcr += ( 90000 / p_sys->f_rate );
return 1;
}
+
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