+++ /dev/null
-/*****************************************************************************
- * sdp.c: SDP parser and builtin UDP/RTP/RTSP
- *****************************************************************************
- * Copyright (C) 2001 VideoLAN
- * $Id: sdp.c,v 1.11 2003/09/12 16:26:40 fenrir Exp $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * 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> /* malloc(), free() */
-
-#include <vlc/vlc.h>
-#include <vlc/input.h>
-
-#include "codecs.h"
-
-#include "/usr/src/libmtools/mc.h"
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-static int DescribeOpen ( vlc_object_t * );
-static void DescribeClose( vlc_object_t * );
-
-static int SDPOpen ( vlc_object_t * );
-static void SDPClose( vlc_object_t * );
-
-vlc_module_begin();
- set_description( _("SDP demuxer/reader") );
- set_capability( "demux", 100 );
- set_callbacks( SDPOpen, SDPClose );
- add_shortcut( "sdp" );
- add_category_hint( "RTSP", NULL, VLC_TRUE );
- add_bool( "rtsp-tcp", 0, NULL,
- "Use rtp over rtsp(tcp)",
- "Use rtp over rtsp(tcp)", VLC_TRUE );
-
- add_submodule();
- set_description( _("RTSP/RTP describe") );
- add_shortcut( "rtp_sdp" );
- add_shortcut( "rtsp" );
- set_capability( "access", 0 );
- set_callbacks( DescribeOpen, DescribeClose );
-vlc_module_end();
-
-static ssize_t DescribeRead( input_thread_t *, byte_t *, size_t );
-static int SDPDemux( input_thread_t * );
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-struct access_sys_t
-{
- int i_sdp;
- int i_sdp_pos;
- char *psz_sdp;
-};
-
-struct demux_sys_t
-{
- media_client_t *mc;
-
- /* try to detect end of stream */
- vlc_bool_t b_received_data;
- int i_no_data;
-};
-
-struct media_client_sys_t
-{
- es_descriptor_t *es;
-
- int64_t i_timestamp;
- vlc_bool_t b_complete;
- pes_packet_t *p_pes;
-};
-
-static void CodecFourcc( char *psz_name, uint8_t *pi_cat,vlc_fourcc_t *pi_fcc);
-
-static void EsDecoderCreate( input_thread_t * p_input, media_client_es_t *p_es );
-static int EsDecoderSend ( input_thread_t * p_input,
- media_client_es_t *p_es, media_client_frame_t *p_frame );
-
-
-/*****************************************************************************
- * DescribeOpen : create a SDP from an URL
- *****************************************************************************
- *
- *****************************************************************************/
-static int DescribeOpen( vlc_object_t *p_this )
-{
- input_thread_t *p_input = (input_thread_t *)p_this;
- access_sys_t *p_sys;
- char *psz_uri;
- vlc_value_t val;
-
- if( p_input->psz_access == NULL ||
- ( strcmp( p_input->psz_access, "rtsp" ) &&
- strcmp( p_input->psz_access, "rtp_sdp" ) ) )
- {
- msg_Dbg( p_input, "invalid access name" );
- return VLC_EGENERIC;
- }
-
- /* We cannot directly use p_input->psz_source as we cannot accept
- * something like rtsp/<demuxer>:// */
- psz_uri = malloc( strlen( p_input->psz_access ) +
- strlen( p_input->psz_name ) + 4 );
- if( !strcmp( p_input->psz_access, "rtp_sdp" ) )
- {
- sprintf( psz_uri, "rtp://%s", p_input->psz_name );
- }
- else
- {
- sprintf( psz_uri, "%s://%s", p_input->psz_access, p_input->psz_name );
- }
-
- msg_Dbg( p_input, "describing %s", psz_uri );
-
- p_sys = p_input->p_access_data = malloc( sizeof( access_sys_t ) );
- p_sys->i_sdp = 0;
- p_sys->i_sdp_pos= 0;
- p_sys->psz_sdp = media_client_describe_url( psz_uri );
-
- if( p_sys->psz_sdp == NULL )
- {
- msg_Err( p_input, "cannot describe %s", psz_uri );
- free( psz_uri );
- return VLC_EGENERIC;
- }
- free( psz_uri );
- p_sys->i_sdp = strlen( p_sys->psz_sdp );
-
- p_input->i_mtu = 0;
-
- var_Create( p_input, "rtsp-tcp", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
- var_Get( p_input, "rtsp-tcp", &val );
-
- /* Set exported functions */
- p_input->pf_read = DescribeRead;
- p_input->pf_seek = NULL;
- p_input->pf_set_program = input_SetProgram;
- p_input->pf_set_area = NULL;
- p_input->p_private = NULL;
-
- /* Finished to set some variable */
- vlc_mutex_lock( &p_input->stream.stream_lock );
- /* FIXME that's not true but eg over tcp, server send data too fast */
- p_input->stream.b_pace_control = val.b_bool;
- p_input->stream.p_selected_area->i_tell = 0;
- p_input->stream.b_seekable = 0;
- p_input->stream.p_selected_area->i_size = 0;
- p_input->stream.i_method = INPUT_METHOD_NETWORK;
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-
- /* Update default_pts to a suitable value for RTSP access */
- p_input->i_pts_delay = 4 * DEFAULT_PTS_DELAY;
- return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- * DescribeClose
- *****************************************************************************
- *
- *****************************************************************************/
-static void DescribeClose( vlc_object_t * p_this )
-{
- input_thread_t *p_input = (input_thread_t *)p_this;
- access_sys_t *p_sys = p_input->p_access_data;
-
- free( p_sys->psz_sdp );
- free( p_sys );
-}
-
-/*****************************************************************************
- * DescribeRead
- *****************************************************************************
- *
- *****************************************************************************/
-static ssize_t DescribeRead( input_thread_t * p_input,
- byte_t * p_buffer, size_t i_len)
-{
- access_sys_t *p_sys = p_input->p_access_data;
- int i_copy = __MIN( (int)i_len,
- p_sys->i_sdp - p_sys->i_sdp_pos );
- if( i_copy > 0 )
- {
- memcpy( p_buffer, &p_sys->psz_sdp[p_sys->i_sdp_pos], i_copy );
- p_sys->i_sdp_pos += i_copy;
- }
-
- return i_copy;
-}
-
-/*****************************************************************************
- * SDPOpen:
- *****************************************************************************
- *
- *****************************************************************************/
-static int SDPOpen( vlc_object_t * p_this )
-{
- input_thread_t *p_input = (input_thread_t *)p_this;
- demux_sys_t *p_sys;
-
- uint8_t *p_peek;
-
- int i_sdp;
- int i_sdp_max;
- char *psz_sdp;
-
- int i_es;
- media_client_es_t **pp_es;
- int i;
-
- char *psz_uri;
- vlc_value_t val;
-
-
- /* See if it looks like a SDP
- v, o, s fields are mandatory and in this order */
- if( input_Peek( p_input, &p_peek, 7 ) < 7 )
- {
- msg_Err( p_input, "cannot peek" );
- return VLC_EGENERIC;
- }
- if( strncmp( p_peek, "v=0\r\n", 5 ) &&
- strncmp( p_peek, "v=0\n", 4 ) )
- {
- msg_Warn( p_input, "SDP module discarded" );
- return VLC_EGENERIC;
- }
-
- p_input->pf_demux = SDPDemux;
- p_input->pf_demux_control = demux_vaControlDefault;
-
- p_sys = p_input->p_demux_data = malloc( sizeof( demux_sys_t ) );
- var_Create( p_input, "rtsp-tcp", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
- var_Get( p_input, "rtsp-tcp", &val );
- p_sys->mc = media_client_create( val.b_bool ? 1 : 0 );
- p_sys->i_no_data = 0;
- p_sys->b_received_data = VLC_FALSE;
-
- /* Read the complete SDP file */
- i_sdp = 0;
- i_sdp_max = 1024;
- psz_sdp = malloc( i_sdp_max );
- for( ;; )
- {
- int i_read;
-
- i_read = stream_Read( p_input->s,
- &psz_sdp[i_sdp], i_sdp_max - i_sdp -1 );
- if( i_read < i_sdp_max - i_sdp -1 )
- {
- if( i_read > 0 )
- {
- i_sdp += i_read;
- }
- break;
- }
- i_sdp += i_read;
- i_sdp_max += 1024;
- psz_sdp = realloc( psz_sdp, i_sdp_max );
- }
- psz_sdp[i_sdp] = '\0';
-
- if( i_sdp == 0 )
- {
- msg_Err( p_input, "cannot read SDP file" );
- free( psz_sdp );
- goto error;
- }
- msg_Dbg( p_input, "------sdp file-----\n%s", psz_sdp );
- msg_Dbg( p_input, "-------------------" );
-
- /* We cannot directly use p_input->psz_source as we cannot accept
- * something like rtsp/<demuxer>:// */
- psz_uri = malloc( strlen( p_input->psz_access ) +
- strlen( p_input->psz_name ) + 4 );
- sprintf( psz_uri, "%s://%s", p_input->psz_access, p_input->psz_name );
-
- if( media_client_add_sdp( p_sys->mc, psz_sdp, psz_uri ) )
- {
- msg_Err( p_input, "cannot add this description" );
- free( psz_sdp );
- goto error;
- }
- free( psz_sdp );
-
- media_client_es( p_sys->mc, &pp_es, &i_es );
- for( i = 0; i < i_es; i++ )
- {
- msg_Dbg( p_input, "es[%d] cat=%s codec=%s",
- i, pp_es[i]->psz_cat, pp_es[i]->psz_codec );
- }
-
-
- 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;
- }
- 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.pp_programs[0]->b_is_ok = 0;
- p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
- p_input->stream.i_mux_rate = 0 / 50;
- p_input->stream.p_selected_program->b_is_ok = 1;
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-
-
- return VLC_SUCCESS;
-
-error:
- media_client_release( p_sys->mc );
-
- free( p_sys );
- return VLC_EGENERIC;
-}
-
-/*****************************************************************************
- * SDPClose:
- *****************************************************************************
- *
- *****************************************************************************/
-static void SDPClose( vlc_object_t * p_this )
-{
- input_thread_t *p_input = (input_thread_t *)p_this;
- demux_sys_t *p_sys = p_input->p_demux_data;
-
- int i_es;
- media_client_es_t **pp_es;
- int i;
-
- media_client_es( p_sys->mc, &pp_es, &i_es );
- for( i = 0; i < i_es; i++ )
- {
- msg_Dbg( p_input, "es[%d] cat=%s codec=%s",
- i, pp_es[i]->psz_cat, pp_es[i]->psz_codec );
-
- if( pp_es[i]->p_sys )
- {
- free( pp_es[i]->p_sys );
- }
- }
-
- media_client_release( p_sys->mc );
- free( p_sys );
-}
-
-/*****************************************************************************
- * SDPDemux:
- *****************************************************************************
- * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
- *****************************************************************************/
-static int SDPDemux( input_thread_t * p_input )
-{
- demux_sys_t *p_sys = p_input->p_demux_data;
-
- media_client_es_t *p_es;
- media_client_frame_t *p_frame;
-
-
- while( !p_input->b_die && !p_input->b_error )
- {
- if( media_client_read( p_sys->mc, &p_es, &p_frame, 500 ) )
- {
- msg_Dbg( p_input, "no data" );
- p_sys->i_no_data++;
- if( p_sys->b_received_data && p_sys->i_no_data > 10 )
- {
- return 0;
- }
- return 1;
- }
- p_sys->b_received_data = VLC_TRUE;
- p_sys->i_no_data = 0;
-
- if( p_es == NULL )
- {
- continue;
- }
-
- if( p_es->p_sys == NULL )
- {
- EsDecoderCreate( p_input, p_es );
- }
-
- if( p_es->p_sys->es && p_es->p_sys->es->p_decoder_fifo &&
- p_frame->i_data > 0 )
- {
- EsDecoderSend( p_input, p_es, p_frame );
- }
- return 1;
- }
-
- return 0;
-}
-
-
-
-static struct
-{
- char *psz_codec;
-
- int i_cat;
- vlc_fourcc_t i_fcc;
-
-} rtp_codec_map[] =
-{
- { "L16", AUDIO_ES, VLC_FOURCC( 't', 'w', 'o', 's' ) },
- { "MPA", AUDIO_ES, VLC_FOURCC( 'm', 'p', 'g', 'a' ) },
- { "MP4V-ES", VIDEO_ES, VLC_FOURCC( 'm', 'p', '4', 'v' ) },
- { "MP4A-ES", AUDIO_ES, VLC_FOURCC( 'm', 'p', '4', 'a' ) },
-/* { "H263-1998", VIDEO_ES, VLC_FOURCC( 'h', '2', '6', '3' ) }, */
- { NULL, UNKNOWN_ES, 0 }
-};
-
-static void CodecFourcc( char *psz_name, uint8_t *pi_cat, vlc_fourcc_t *pi_fcc)
-{
- int i;
- for( i = 0; rtp_codec_map[i].psz_codec != NULL; i++ )
- {
- if( !strcasecmp( psz_name, rtp_codec_map[i].psz_codec ) )
- {
- break;
- }
- }
- *pi_cat = rtp_codec_map[i].i_cat;
- *pi_fcc = rtp_codec_map[i].i_fcc;
-}
-
-static void EsDecoderCreate( input_thread_t * p_input, media_client_es_t *p_es )
-{
- msg_Dbg( p_input, "adding es cat=%s codec=%s",
- p_es->psz_cat, p_es->psz_codec );
-
- p_es->p_sys = malloc( sizeof( media_client_sys_t ) );
- p_es->p_sys->p_pes = NULL;
- p_es->p_sys->b_complete = VLC_FALSE;
- p_es->p_sys->i_timestamp = 0;
- vlc_mutex_lock( &p_input->stream.stream_lock );
- if( !strcmp( p_es->psz_cat, "audio" ) )
- {
- p_es->p_sys->es =
- input_AddES( p_input,
- p_input->stream.p_selected_program,
- 1 , AUDIO_ES, NULL, 0 );
- }
- else if( !strcmp( p_es->psz_cat, "video" ) )
- {
- p_es->p_sys->es =
- input_AddES( p_input,
- p_input->stream.p_selected_program,
- 1 , VIDEO_ES, NULL, 0 );
- }
- else
- {
- msg_Warn( p_input, "cat unsuported" );
- p_es->p_sys->es = NULL;
- }
- if( p_es->p_sys->es )
- {
- CodecFourcc( p_es->psz_codec,
- &p_es->p_sys->es->i_cat,
- &p_es->p_sys->es->i_fourcc );
- msg_Dbg( p_input, "cat=%d fcc=%4.4s",
- p_es->p_sys->es->i_cat,
- (char*)&p_es->p_sys->es->i_fourcc );
- if( p_es->p_sys->es->i_cat == AUDIO_ES )
- {
- WAVEFORMATEX *p_wf;
- int i_size = sizeof( WAVEFORMATEX ) +
- p_es->i_extra_data;
- p_wf = malloc( i_size );
- p_wf->wFormatTag = 0;
- p_wf->nChannels = p_es->audio.i_channels;
- p_wf->nSamplesPerSec = p_es->audio.i_samplerate;
- p_wf->nBlockAlign = 0;
- p_wf->wBitsPerSample = 0;
- if( !strcmp( p_es->psz_codec, "L16" ) )
- {
- p_wf->wBitsPerSample = 16;
- }
-
- p_wf->cbSize = p_es->i_extra_data;
- if( p_es->i_extra_data > 0 )
- {
- memcpy( &p_wf[1], p_es->p_extra_data,
- p_es->i_extra_data );
- }
- p_es->p_sys->es->p_waveformatex = (void*)p_wf;
- p_es->p_sys->es->p_bitmapinfoheader = NULL;
- }
- else if( p_es->p_sys->es->i_cat == VIDEO_ES )
- {
- BITMAPINFOHEADER *p_bih;
- int i_size = sizeof( BITMAPINFOHEADER ) +
- p_es->i_extra_data;
- p_bih = malloc( i_size );
- p_bih->biSize = i_size;
- p_bih->biWidth = p_es->video.i_width;
- p_bih->biHeight = p_es->video.i_height;
- p_bih->biPlanes = 1;
- p_bih->biBitCount = 24;
- p_bih->biCompression= 0;
- p_bih->biSizeImage = 0;
- p_bih->biXPelsPerMeter = 0;
- p_bih->biYPelsPerMeter = 0;
- p_bih->biClrUsed = 0;
- p_bih->biClrImportant = 0;
-
- if( p_es->i_extra_data > 0 )
- {
- memcpy( &p_bih[1], p_es->p_extra_data,
- p_es->i_extra_data );
- }
- p_es->p_sys->es->p_waveformatex = NULL;
- p_es->p_sys->es->p_bitmapinfoheader = (void*)p_bih;
- }
- input_SelectES( p_input, p_es->p_sys->es );
- }
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-}
-
-static int EsDecoderSend ( input_thread_t * p_input,
- media_client_es_t *p_es, media_client_frame_t *p_frame )
-{
- media_client_sys_t *tk = p_es->p_sys;
- data_packet_t *p_data;
-
- if( tk->p_pes && tk->b_complete )
- {
- tk->p_pes->i_dts = 0;
- tk->p_pes->i_pts = 0;
-
- if( tk->i_timestamp > 0 )
- {
- input_ClockManageRef( p_input,
- p_input->stream.p_selected_program,
- tk->i_timestamp * 9 / 100 );
- tk->p_pes->i_pts =
- tk->p_pes->i_dts =
- input_ClockGetTS( p_input,
- p_input->stream.p_selected_program,
- tk->i_timestamp * 9 / 100 );
- }
-#if 0
- msg_Dbg( p_input, "codec=%s frame pts=%lld dts=%lld",
- p_es->psz_codec,
- tk->p_pes->i_pts, tk->p_pes->i_dts );
-#endif
-
- input_DecodePES( tk->es->p_decoder_fifo, tk->p_pes );
- tk->p_pes = NULL;
- }
-
- if( tk->p_pes == NULL )
- {
- tk->b_complete = VLC_FALSE;
- tk->i_timestamp = p_frame->i_pts;
- tk->p_pes = input_NewPES( p_input->p_method_data );
- if( tk->p_pes == NULL )
- {
- msg_Err( p_input, "cannot allocate pes" );
- return -1;
- }
- tk->p_pes->i_rate = p_input->stream.control.i_rate;
- tk->p_pes->i_nb_data = 0;
- tk->p_pes->i_pes_size = 0;
- }
-
- if( ( p_data = input_NewPacket( p_input->p_method_data,
- p_frame->i_data ) ) == NULL )
- {
- msg_Err( p_input, "cannot allocate data" );
- return -1;
- }
- p_data->p_payload_end = p_data->p_payload_start + p_frame->i_data;
- memcpy( p_data->p_payload_start, p_frame->p_data, p_frame->i_data);
-
- if( tk->p_pes->p_first == NULL )
- {
- tk->p_pes->p_first = p_data;
- }
- else
- {
- tk->p_pes->p_last->p_next = p_data;
- }
- tk->p_pes->p_last = p_data;
- tk->p_pes->i_pes_size += p_frame->i_data;
- tk->p_pes->i_nb_data++;
-
- tk->b_complete = p_frame->b_completed;
-}
-
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