--- /dev/null
+/****************************************************************************
+ * input_vcd.c: VideoCD raw reading plugin.
+ *****************************************************************************
+ * Copyright (C) 1998-2001 VideoLAN
+ *
+ * Author: Johan Bilien <jobi@via.ecp.fr>, based on Stephane Borel's DVD input
+ * and on Christophe Massiot and
+ * Cyril Deguet's PS input
+ *
+ * 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.
+ *****************************************************************************/
+
+#define MODULE_NAME vcd
+#include "modules_inner.h"
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include "defs.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <string.h>
+#include <errno.h>
+
+#ifdef STRNCASECMP_IN_STRINGS_H
+# include <strings.h>
+#endif
+
+#if defined( WIN32 )
+# include <io.h> /* read() */
+#else
+# include <sys/uio.h> /* struct iovec */
+#endif
+
+
+#include "config.h"
+#include "common.h"
+#include "threads.h"
+#include "mtime.h"
+#include "tests.h"
+
+#if defined( WIN32 )
+# include "input_iovec.h"
+#endif
+
+#include "intf_msg.h"
+
+#include "main.h"
+
+#include "stream_control.h"
+#include "input_ext-intf.h"
+#include "input_ext-dec.h"
+#include "input_ext-plugins.h"
+
+#include "debug.h"
+
+#include "modules.h"
+#include "modules_export.h"
+
+#include "../mpeg/input_ps.h"
+#include "input_vcd.h"
+#include "linux_cdrom_tools.h"
+
+/* how many blocks VCDRead will read in each loop */
+#define VCD_BLOCKS_ONCE 64
+#define VCD_DATA_ONCE (2 * VCD_BLOCKS_ONCE)
+#define BUFFER_SIZE VCD_DATA_SIZE
+
+
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+/* called from outside */
+static int VCDProbe ( probedata_t *p_data );
+static void VCDInit ( struct input_thread_s * );
+static int VCDRead ( struct input_thread_s *, data_packet_t ** );
+static int VCDSetArea ( struct input_thread_s *, struct input_area_s * );
+static void VCDOpen ( struct input_thread_s *);
+static void VCDClose ( struct input_thread_s *);
+static void VCDEnd ( struct input_thread_s *);
+static void VCDSeek ( struct input_thread_s *, off_t );
+static int VCDRewind ( struct input_thread_s * );
+static struct data_packet_s * NewPacket( void *, size_t );
+static pes_packet_t * NewPES ( void * );
+static void DeletePacket ( void *, data_packet_t * );
+static void DeletePES ( void *, pes_packet_t *);
+
+
+
+/*****************************************************************************
+ * Functions exported as capabilities. They are declared as static so that
+ * we don't pollute the namespace too much.
+ *****************************************************************************/
+void _M( input_getfunctions )( function_list_t * p_function_list )
+{
+#define input p_function_list->functions.input
+ p_function_list->pf_probe = VCDProbe ;
+ input.pf_init = VCDInit ;
+ input.pf_open = VCDOpen ;
+ input.pf_close = VCDClose ;
+ input.pf_end = VCDEnd ;
+ input.pf_init_bit_stream = InitBitstream;
+ input.pf_read = VCDRead ;
+ input.pf_set_area = VCDSetArea ;
+ input.pf_demux = input_DemuxPS;
+ input.pf_new_packet = NewPacket;
+ input.pf_new_pes = NewPES;
+ input.pf_delete_packet = DeletePacket;
+ input.pf_delete_pes = DeletePES;
+ input.pf_rewind = VCDRewind ;
+ input.pf_seek = VCDSeek ;
+#undef input
+}
+
+/*
+ * Data reading functions
+ */
+
+/*****************************************************************************
+ * VCDProbe: verifies that the stream is a PS stream
+ *****************************************************************************/
+static int VCDProbe( probedata_t *p_data )
+{
+
+ input_thread_t * p_input = (input_thread_t *)p_data;
+
+ char * psz_name = p_input->p_source;
+ int i_score = 5;
+
+ if( TestMethod( INPUT_METHOD_VAR, "vcd" ) )
+ {
+ return( 999 );
+ }
+
+ if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "vcd:", 4 ) )
+ {
+ /* If the user specified "vcd:" then it's probably a VCD */
+ i_score = 100;
+ psz_name += 4;
+ }
+ return( i_score );
+}
+
+/*****************************************************************************
+ * VCDOpen: open vcd
+ *****************************************************************************/
+static void VCDOpen( struct input_thread_s *p_input )
+{
+ int vcdhandle;
+
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+
+ /* If we are here we can control the pace... */
+ p_input->stream.b_pace_control = 1;
+
+ p_input->stream.b_seekable = 1;
+ p_input->stream.p_selected_area->i_size = 0;
+
+ p_input->stream.p_selected_area->i_tell = 0;
+
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+
+ /* XXX: put this shit in an access plugin */
+ if( strlen( p_input->p_source ) > 4
+ && !strncasecmp( p_input->p_source, "vcd:", 4 ) )
+ {
+ vcdhandle = open( p_input->p_source + 4, O_RDONLY | O_NONBLOCK );
+ }
+ else
+ {
+ vcdhandle = open( p_input->p_source + 4, O_RDONLY | O_NONBLOCK );
+ }
+
+ if( vcdhandle == -1 )
+ {
+ p_input->b_error = 1;
+ return;
+ }
+
+ p_input->i_handle = (int) vcdhandle;
+}
+
+/*****************************************************************************
+ * VCDClose: close vcd
+ *****************************************************************************/
+static void VCDClose( struct input_thread_s *p_input )
+{
+ close( p_input->i_handle );
+}
+
+/*****************************************************************************
+ * VCDInit: initializes VCD structures
+ *****************************************************************************/
+static void VCDInit( input_thread_t * p_input )
+{
+ thread_vcd_data_t * p_vcd;
+ int i_title;
+ int i_chapter;
+ int i;
+ input_area_t * p_area;
+ es_descriptor_t * p_es;
+ packet_cache_t * p_packet_cache;
+
+ p_vcd = malloc( sizeof(thread_vcd_data_t) );
+
+ if( p_vcd == NULL )
+ {
+ intf_ErrMsg( "vcd error: out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+
+
+
+ p_input->p_plugin_data = (void *)p_vcd;
+ p_input->p_method_data = NULL;
+
+ p_vcd->vcdhandle = p_input->i_handle;
+ p_vcd->b_end_of_track = 0;
+
+ /* we read the Table Of Content information */
+ if ( read_toc(p_vcd) == -1 )
+ {
+ intf_ErrMsg("An error occured when reading vcd's TOC");
+ }
+
+ p_input->i_read_once = VCD_DATA_ONCE;
+
+ p_packet_cache = malloc( sizeof(packet_cache_t) );
+
+ if ( p_packet_cache == NULL )
+ {
+ intf_ErrMsg( "vcd error: out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+
+ p_input->p_method_data = (void *)p_packet_cache;
+ /* Initialize packet cache mutex */
+ vlc_mutex_init( &p_packet_cache->lock );
+
+ /* allocates the data cache */
+ p_packet_cache->data.p_stack = malloc( DATA_CACHE_SIZE *
+ sizeof(data_packet_t*) );
+ if ( p_packet_cache->data.p_stack == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+ p_packet_cache->data.l_index = 0;
+
+ /* allocates the PES cache */
+ p_packet_cache->pes.p_stack = malloc( PES_CACHE_SIZE *
+ sizeof(pes_packet_t*) );
+ if ( p_packet_cache->pes.p_stack == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+ p_packet_cache->pes.l_index = 0;
+
+ /* allocates the small buffer cache */
+ p_packet_cache->smallbuffer.p_stack = malloc( SMALL_CACHE_SIZE *
+ sizeof(packet_buffer_t) );
+ if ( p_packet_cache->smallbuffer.p_stack == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+ p_packet_cache->smallbuffer.l_index = 0;
+
+ /* allocates the large buffer cache */
+ p_packet_cache->largebuffer.p_stack = malloc( LARGE_CACHE_SIZE *
+ sizeof(packet_buffer_t) );
+ if ( p_packet_cache->largebuffer.p_stack == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ p_input->b_error = 1;
+ return;
+ }
+ p_packet_cache->largebuffer.l_index = 0;
+
+ /* Set stream and area data */
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+
+ /* Initialize ES structures */
+ input_InitStream( p_input, sizeof( stream_ps_data_t ) );
+
+ /* disc input method */
+ p_input->stream.i_method = INPUT_METHOD_VCD;
+
+
+#define area p_input->stream.pp_areas
+ for( i = 1 ; i <= p_vcd->nb_tracks - 1 ; i++ )
+ {
+ input_AddArea( p_input );
+
+ /* Titles are Program Chains */
+ area[i]->i_id = i;
+
+ /* Absolute start offset and size */
+ area[i]->i_start = p_vcd->tracks_sector[i+1];
+ area[i]->i_size = p_vcd->tracks_sector[i+2] - p_vcd->tracks_sector[i+1];
+
+ /* Number of chapters */
+ area[i]->i_part_nb = 0; // will be the entry points
+ area[i]->i_part = 1;
+
+ /* Number of angles */
+ area[i]->i_angle_nb = 1; // no angle support in VCDs
+ area[i]->i_angle = 1;
+
+ area[i]->i_plugin_data = p_vcd->tracks_sector[i+1];
+ }
+#undef area
+
+ /* Get requested title - if none try the first title */
+ i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
+ if( i_title <= 0)
+ {
+ i_title = 2;
+ }
+
+ // p_vcd->current_track = i_title-1 ;
+
+ /* Get requested chapter - if none defaults to first one */
+ i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
+ if( i_chapter <= 0 )
+ {
+ i_chapter = 1;
+ }
+
+
+ p_input->stream.pp_areas[i_title]->i_part = i_chapter;
+
+ p_area = p_input->stream.pp_areas[i_title];
+
+ VCDSetArea( p_input, p_area );
+
+ /* Set program information. */
+
+ input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
+
+ /* No PSM to read in disc mode, we already have all information */
+ p_input->stream.pp_programs[0]->b_is_ok = 1;
+
+ p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
+ p_es->i_stream_id = 0xe0;
+ p_es->i_type = MPEG1_VIDEO_ES;
+ p_es->i_cat = VIDEO_ES;
+
+ if( p_main->b_video )
+ {
+ input_SelectES( p_input, p_es );
+ }
+
+ p_es = input_AddES( p_input,
+ p_input->stream.pp_programs[0], 0xc0, 0 );
+ p_es->i_stream_id = 0xc0;
+ p_es->i_type = MPEG1_AUDIO_ES;
+ p_es->b_audio = 1;
+ p_es->i_cat = AUDIO_ES;
+
+ if( p_main->b_audio )
+ {
+ input_SelectES( p_input, p_es );
+ }
+
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+
+ return;
+}
+
+
+/*****************************************************************************
+ * VCDEnd: frees unused data
+ *****************************************************************************/
+static void VCDEnd( input_thread_t * p_input )
+{
+ thread_vcd_data_t * p_vcd;
+
+ p_vcd = (thread_vcd_data_t*)p_input->p_plugin_data;
+
+ free( p_vcd );
+
+}
+
+/*****************************************************************************
+ * VCDSetArea: initialize input data for title x, chapter y.
+ * It should be called for each user navigation request.
+ ****************************************************************************/
+static int VCDSetArea( input_thread_t * p_input, input_area_t * p_area )
+{
+ thread_vcd_data_t * p_vcd;
+
+ p_vcd = (thread_vcd_data_t*)p_input->p_plugin_data;
+
+ /* we can't use the interface slider until initilization is complete */
+ p_input->stream.b_seekable = 0;
+
+ if ( p_area != p_input->stream.p_selected_area )
+ {
+ /* Reset the Chapter position of the old title */
+ p_input->stream.p_selected_area->i_part = 0;
+
+ /* Change the default area */
+ p_input->stream.p_selected_area =
+ p_input->stream.pp_areas[p_area->i_id];
+
+ /* Change the current track */
+ /* The first track is not a valid one */
+ p_vcd->current_track = p_area->i_id + 1 ;
+ p_vcd->current_sector = p_vcd->tracks_sector[p_vcd->current_track] ;
+ }
+ /* warn interface that something has changed */
+ p_input->stream.b_seekable = 1;
+ p_input->stream.b_changed = 1;
+ return 0 ;
+
+}
+
+
+
+/*****************************************************************************
+ * VCDRead: reads from the VCD into PES packets.
+ *****************************************************************************
+ * Returns -1 in case of error, 0 if everything went well, and 1 in case of
+ * EOF.
+ *****************************************************************************/
+static int VCDRead( input_thread_t * p_input,
+ data_packet_t ** pp_packets )
+{
+ thread_vcd_data_t * p_vcd;
+ data_packet_t * p_data;
+ int i_packet_size;
+ int i_index;
+ int i_packet;
+ boolean_t b_eof;
+ byte_t * p_buffer;
+ boolean_t b_no_packet;
+ /* boolean_t b_eoc; No chapters yet */
+
+ p_vcd = (thread_vcd_data_t *)p_input->p_plugin_data;
+
+
+ p_buffer = malloc ( VCD_DATA_SIZE );
+
+ if ( p_buffer == NULL )
+ {
+ intf_ErrMsg("Could not malloc the read buffer");
+ return -1;
+ }
+
+
+ i_packet = 0;
+ b_no_packet = 0;
+
+ while( i_packet < VCD_DATA_ONCE )
+ {
+ i_index = 0;
+
+ if ( VCD_sector_read( p_vcd, p_buffer ) == -1 )
+ {
+ return -1;
+ }
+
+ while (i_index < BUFFER_SIZE - 6)
+ {
+
+ if( (U32_AT(p_buffer + i_index) & 0xFFFFFF00) != 0x100L )
+ {
+ /* This is not the startcode of a packet. Read the stream
+ * until we find one. */
+
+ if( !U32_AT( p_buffer + i_index ) )
+ {
+ /* It is common for MPEG-1 streams to pad with zeros
+ * (although it is forbidden by the recommendation), so
+ * don't bother everybody in this case. */
+ intf_WarnMsg( 3, "Garbage at input" );
+ }
+
+ while( ( (U32_AT(p_buffer + i_index) & 0xFFFFFF00) != 0x100L )
+ && ( i_index < BUFFER_SIZE - 4 ) )
+ {
+ i_index ++;
+ }
+
+ if ( i_index == BUFFER_SIZE - 4 )
+ {
+ b_no_packet = 1;
+ }
+ /* Packet found. */
+ }
+
+ if (b_no_packet)
+ {
+ b_no_packet = 0;
+ intf_WarnMsg(3, "No packet found on sector %d\n",
+ p_vcd->current_sector -1 );
+ break; /* go to the next sector */
+ }
+
+#ifdef DEBUG
+ intf_DbgMsg("packet start code : %X\n",
+ U32_AT(p_buffer + i_index));
+#endif
+ /* 0x1B9 == SYSTEM_END_CODE, it is only 4 bytes long. */
+ if( U32_AT(p_buffer + i_index) != 0x1B9 )
+ {
+ /* The packet is at least 6 bytes long. */
+
+ if( U32_AT(p_buffer + i_index) != 0x1BA )
+ {
+ /* That's the case for all packets, except pack header. */
+ i_packet_size = U16_AT((p_buffer + ( i_index + 4 )));
+ }
+ else
+ {
+ /* Pack header. */
+ if( ( *( p_buffer + ( i_index + 4 ) ) & 0xC0) == 0x40 )
+ {
+ /* MPEG-2 */
+ i_packet_size = 8;
+ }
+ else if( (*(p_buffer + ( i_index + 4 ) ) & 0xF0) == 0x20 )
+ {
+ /* MPEG-1 */
+ i_packet_size = 6;
+ }
+ else
+ {
+ intf_ErrMsg( "Unable to determine stream type" );
+ return( -1 );
+ }
+ }
+ }
+ else
+ {
+ /* System End Code */
+ i_packet_size = -2;
+ }
+#ifdef DEBUG
+ intf_DbgMsg("i_index : %d\n", i_index);
+ intf_DbgMsg("i_packet_size : %d\n", i_packet_size);
+#endif
+ if ( i_index + i_packet_size > BUFFER_SIZE )
+ {
+ intf_ErrMsg( "Too long packet");
+ continue;
+ }
+
+ /* Fetch a packet of the appropriate size. */
+
+ p_data = NewPacket( p_input->p_method_data, i_packet_size + 6 );
+
+ if( p_data == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ return( -1 );
+ }
+
+ if( U32_AT(p_buffer) != 0x1B9 )
+ {
+ memcpy( p_data->p_buffer, p_buffer + i_index,
+ 6 + i_packet_size );
+ i_index += ( 6 + i_packet_size );
+
+ }
+ else
+ {
+ /* Copy the small header. */
+ memcpy( p_data->p_buffer, p_buffer + i_index, 4 );
+ i_index += 4;
+ }
+
+ /* Give the packet to the other input stages. */
+ pp_packets[i_packet] = p_data;
+ i_packet ++;
+ }
+
+ if ( p_vcd->b_end_of_track )
+ break;
+ }
+
+
+
+
+
+
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+
+ p_input->stream.p_selected_area->i_tell =
+ p_vcd->current_sector -
+ p_input->stream.p_selected_area->i_start ;
+
+ /* no chapter for the moment*/
+ /*if( b_eoc )
+ {
+ * We modify i_part only at end of chapter not to erase
+ * some modification from the interface *
+ p_input->stream.p_selected_area->i_part = p_vcd->i_chapter;
+ }*/
+
+
+ b_eof = p_vcd->b_end_of_track &&
+ ( ( p_vcd->current_track + 1 ) >= p_vcd->nb_tracks );
+
+ if( b_eof )
+ {
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+ return 1;
+ }
+
+ if( p_vcd->b_end_of_track )
+ {
+ intf_WarnMsg( 4, "vcd info: new title" );
+ p_vcd->current_track++;
+ p_vcd->b_end_of_track = 0;
+ VCDSetArea( p_input, p_input->stream.pp_areas[p_vcd->current_track] );
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+ return 0;
+ }
+
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+
+ return 0;
+}
+
+/*****************************************************************************
+ * VCDRewind : reads a stream backward
+ *****************************************************************************/
+static int VCDRewind( input_thread_t * p_input )
+{
+ return( -1 );
+}
+
+
+/****************************************************************************
+ * VCDSeek
+ ****************************************************************************/
+static void VCDSeek( input_thread_t * p_input, off_t i_off )
+{
+ thread_vcd_data_t * p_vcd;
+
+ p_vcd = (thread_vcd_data_t *) p_input->p_plugin_data;
+
+ p_vcd->current_sector = p_vcd->tracks_sector[p_vcd->current_track]
+ + i_off;
+
+ p_input->stream.p_selected_area->i_tell = p_vcd->current_sector
+ - p_input->stream.p_selected_area->i_start;
+
+ return ;
+}
+
+
+
+/*
+ * Packet management utilities
+ */
+
+
+/*****************************************************************************
+ * NewPacket: allocates a data packet
+ *****************************************************************************/
+static struct data_packet_s * NewPacket( void * p_packet_cache,
+ size_t l_size )
+{
+ packet_cache_t * p_cache;
+ data_packet_t * p_data;
+ long l_index;
+
+ p_cache = (packet_cache_t *)p_packet_cache;
+
+#ifdef DEBUG
+ if ( p_cache == NULL )
+ {
+ intf_ErrMsg( "PPacket cache not initialized" );
+ return NULL;
+ }
+#endif
+
+ /* Safety check */
+ if( l_size > INPUT_MAX_PACKET_SIZE )
+ {
+ intf_ErrMsg( "Packet too big (%d)", l_size );
+ return NULL;
+ }
+
+ vlc_mutex_lock( &p_cache->lock );
+
+ /* Checks whether the data cache is empty */
+ if( p_cache->data.l_index == 0 )
+ {
+ /* Allocates a new packet */
+ p_data = malloc( sizeof(data_packet_t) );
+ if( p_data == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: data packet allocated" );
+#endif
+ }
+ else
+ {
+ /* Takes the packet out from the cache */
+ if( (p_data = p_cache->data.p_stack[ -- p_cache->data.l_index ])
+ == NULL )
+ {
+ intf_ErrMsg( "NULL packet in the data cache" );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+ }
+
+ if( l_size < MAX_SMALL_SIZE )
+ {
+ /* Small buffer */
+
+ /* Checks whether the buffer cache is empty */
+ if( p_cache->smallbuffer.l_index == 0 )
+ {
+ /* Allocates a new packet */
+ p_data->p_buffer = malloc( l_size );
+ if( p_data->p_buffer == NULL )
+ {
+ intf_DbgMsg( "Out of memory" );
+ free( p_data );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: small buffer allocated" );
+#endif
+ p_data->l_size = l_size;
+ }
+ else
+ {
+ /* Takes the packet out from the cache */
+ l_index = -- p_cache->smallbuffer.l_index;
+ if( (p_data->p_buffer = p_cache->smallbuffer.p_stack[l_index].p_data)
+ == NULL )
+ {
+ intf_ErrMsg( "NULL packet in the small buffer cache" );
+ free( p_data );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+ /* Reallocates the packet if it is too small or too large */
+ if( p_cache->smallbuffer.p_stack[l_index].l_size < l_size ||
+ p_cache->smallbuffer.p_stack[l_index].l_size > 2*l_size )
+ {
+ p_data->p_buffer = realloc( p_data->p_buffer, l_size );
+ p_data->l_size = l_size;
+ }
+ else
+ {
+ p_data->l_size = p_cache->smallbuffer.p_stack[l_index].l_size;
+ }
+ }
+ }
+ else
+ {
+ /* Large buffer */
+
+ /* Checks whether the buffer cache is empty */
+ if( p_cache->largebuffer.l_index == 0 )
+ {
+ /* Allocates a new packet */
+ p_data->p_buffer = malloc( l_size );
+ if ( p_data->p_buffer == NULL )
+ {
+ intf_ErrMsg( "Out of memory" );
+ free( p_data );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: large buffer allocated" );
+#endif
+ p_data->l_size = l_size;
+ }
+ else
+ {
+ /* Takes the packet out from the cache */
+ l_index = -- p_cache->largebuffer.l_index;
+ p_data->p_buffer = p_cache->largebuffer.p_stack[l_index].p_data;
+ if( p_data->p_buffer == NULL )
+ {
+ intf_ErrMsg( "NULL packet in the small buffer cache" );
+ free( p_data );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+ /* Reallocates the packet if it is too small or too large */
+ if( p_cache->largebuffer.p_stack[l_index].l_size < l_size ||
+ p_cache->largebuffer.p_stack[l_index].l_size > 2*l_size )
+ {
+ p_data->p_buffer = realloc( p_data->p_buffer, l_size );
+ p_data->l_size = l_size;
+ }
+ else
+ {
+ p_data->l_size = p_cache->largebuffer.p_stack[l_index].l_size;
+ }
+ }
+ }
+
+ vlc_mutex_unlock( &p_cache->lock );
+
+ /* Initialize data */
+ p_data->p_next = NULL;
+ p_data->b_discard_payload = 0;
+ p_data->p_payload_start = p_data->p_buffer;
+ p_data->p_payload_end = p_data->p_buffer + l_size;
+
+ return( p_data );
+
+}
+
+
+/*****************************************************************************
+ * NewPES: allocates a pes packet
+ *****************************************************************************/
+static pes_packet_t * NewPES( void * p_packet_cache )
+{
+ packet_cache_t * p_cache;
+ pes_packet_t * p_pes;
+
+ p_cache = (packet_cache_t *)p_packet_cache;
+
+#ifdef DEBUG
+ if ( p_cache == NULL )
+ {
+ intf_ErrMsg( "Packet cache not initialized" );
+ return NULL;
+ }
+#endif
+
+ vlc_mutex_lock( &p_cache->lock );
+
+ /* Checks whether the PES cache is empty */
+ if( p_cache->pes.l_index == 0 )
+ {
+ /* Allocates a new packet */
+ p_pes = malloc( sizeof(pes_packet_t) );
+ if( p_pes == NULL )
+ {
+ intf_DbgMsg( "Out of memory" );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: PES packet allocated" );
+#endif
+ }
+ else
+ {
+ /* Takes the packet out from the cache */
+ p_pes = p_cache->pes.p_stack[ -- p_cache->pes.l_index ];
+ if( p_pes == NULL )
+ {
+ intf_ErrMsg( "NULL packet in the data cache" );
+ vlc_mutex_unlock( &p_cache->lock );
+ return NULL;
+ }
+ }
+
+ vlc_mutex_unlock( &p_cache->lock );
+
+ p_pes->b_data_alignment = p_pes->b_discontinuity =
+ p_pes->i_pts = p_pes->i_dts = 0;
+ p_pes->i_pes_size = 0;
+ p_pes->p_first = NULL;
+
+ return( p_pes );
+
+}
+
+/*****************************************************************************
+ * DeletePacket: deletes a data packet
+ *****************************************************************************/
+static void DeletePacket( void * p_packet_cache,
+ data_packet_t * p_data )
+{
+ packet_cache_t * p_cache;
+
+ p_cache = (packet_cache_t *)p_packet_cache;
+
+#ifdef DEBUG
+ if ( p_cache == NULL )
+ {
+ intf_ErrMsg( "Packet cache not initialized" );
+ return;
+ }
+#endif
+
+ ASSERT( p_data );
+
+ vlc_mutex_lock( &p_cache->lock );
+
+ /* Checks whether the data cache is full */
+ if ( p_cache->data.l_index < DATA_CACHE_SIZE )
+ {
+ /* Cache not full: store the packet in it */
+ p_cache->data.p_stack[ p_cache->data.l_index ++ ] = p_data;
+ /* Small buffer or large buffer? */
+ if ( p_data->l_size < MAX_SMALL_SIZE )
+ {
+ /* Checks whether the small buffer cache is full */
+ if ( p_cache->smallbuffer.l_index < SMALL_CACHE_SIZE )
+ {
+ p_cache->smallbuffer.p_stack[
+ p_cache->smallbuffer.l_index ].l_size = p_data->l_size;
+ p_cache->smallbuffer.p_stack[
+ p_cache->smallbuffer.l_index++ ].p_data = p_data->p_buffer;
+ }
+ else
+ {
+ ASSERT( p_data->p_buffer );
+ free( p_data->p_buffer );
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: small buffer freed" );
+#endif
+ }
+ }
+ else
+ {
+ /* Checks whether the large buffer cache is full */
+ if ( p_cache->largebuffer.l_index < LARGE_CACHE_SIZE )
+ {
+ p_cache->largebuffer.p_stack[
+ p_cache->largebuffer.l_index ].l_size = p_data->l_size;
+ p_cache->largebuffer.p_stack[
+ p_cache->largebuffer.l_index++ ].p_data = p_data->p_buffer;
+ }
+ else
+ {
+ ASSERT( p_data->p_buffer );
+ free( p_data->p_buffer );
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: large buffer freed" );
+#endif
+ }
+ }
+ }
+ else
+ {
+ /* Cache full: the packet must be freed */
+ free( p_data->p_buffer );
+ free( p_data );
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: data packet freed" );
+#endif
+ }
+
+ vlc_mutex_unlock( &p_cache->lock );
+}
+
+/*****************************************************************************
+ * DeletePES: deletes a PES packet and associated data packets
+ *****************************************************************************/
+static void DeletePES( void * p_packet_cache, pes_packet_t * p_pes )
+{
+ packet_cache_t * p_cache;
+ data_packet_t * p_data;
+ data_packet_t * p_next;
+
+ p_cache = (packet_cache_t *)p_packet_cache;
+
+#ifdef DEBUG
+ if ( p_cache == NULL )
+ {
+ intf_ErrMsg( "Packet cache not initialized" );
+ return;
+ }
+#endif
+
+ ASSERT( p_pes);
+
+ p_data = p_pes->p_first;
+
+ while( p_data != NULL )
+ {
+ p_next = p_data->p_next;
+ DeletePacket( p_cache, p_data );
+ p_data = p_next;
+ }
+
+ vlc_mutex_lock( &p_cache->lock );
+
+ /* Checks whether the PES cache is full */
+ if ( p_cache->pes.l_index < PES_CACHE_SIZE )
+ {
+ /* Cache not full: store the packet in it */
+ p_cache->pes.p_stack[ p_cache->pes.l_index ++ ] = p_pes;
+ }
+ else
+ {
+ /* Cache full: the packet must be freed */
+ free( p_pes );
+#ifdef TRACE_INPUT
+ intf_DbgMsg( "PS input: PES packet freed" );
+#endif
+ }
+
+ vlc_mutex_unlock( &p_cache->lock );
+}
--- /dev/null
+/****************************************************************************
+ * linux_cdrom_tools.c: linux cdrom tools
+ *****************************************************************************
+ * Copyright (C) 1998-2001 VideoLAN
+ *
+ * Author: Johan Bilien <jobi@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.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Functions declared in this file use lots of ioctl calls, thus they are
+ * Linux-specific.
+ ****************************************************************************/
+
+
+#include "defs.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <string.h>
+#include <errno.h>
+
+#ifdef STRNCASECMP_IN_STRINGS_H
+# include <strings.h>
+#endif
+
+#if defined( WIN32 )
+# include <io.h> /* read() */
+#else
+# include <sys/uio.h> /* struct iovec */
+#endif
+
+#include <sys/ioctl.h>
+
+#include "config.h"
+#include "common.h"
+#include "threads.h"
+#include "mtime.h"
+#include "tests.h"
+
+#if defined( WIN32 )
+# include "input_iovec.h"
+#endif
+
+#include "intf_msg.h"
+
+#include "main.h"
+
+#include "stream_control.h"
+#include "input_ext-intf.h"
+#include "input_ext-dec.h"
+#include "input_ext-plugins.h"
+
+#include "debug.h"
+
+#include "modules.h"
+#include "modules_export.h"
+
+
+#include "input_vcd.h"
+#include "linux_cdrom_tools.h"
+/*****************************************************************************
+* read_toc : Reads the Table of Content of a CD-ROM and fills p_vcd with *
+* the read information *
+*****************************************************************************/
+int read_toc ( thread_vcd_data_t * p_vcd )
+{
+ int i ;
+ struct cdrom_tochdr tochdr ;
+ struct cdrom_tocentry tocent ;
+ int fd = p_vcd->vcdhandle ;
+
+ /* first we read the TOC header */
+ if (ioctl(fd, CDROMREADTOCHDR, &tochdr) == -1)
+ {
+ intf_ErrMsg("problem occured when reading CD's TOCHDR\n") ;
+ return -1 ;
+ }
+
+ p_vcd->nb_tracks = tochdr.cdth_trk1;
+ /* nb_tracks + 1 because we put the lead_out tracks for computing last
+ track's size */
+ p_vcd->tracks_sector = malloc( (p_vcd->nb_tracks + 1)
+ * sizeof( int ) );
+ if ( p_vcd->tracks_sector == NULL )
+ {
+ intf_ErrMsg("could not malloc tracks_sector");
+ return -1;
+ }
+
+ /* then for each track we read its TOC entry */
+
+ for(i=tochdr.cdth_trk0 ;i<=tochdr.cdth_trk1;i++)
+ {
+ tocent.cdte_track = i ;
+ tocent.cdte_format = CDROM_LBA ;
+ if (ioctl(fd, CDROMREADTOCENTRY, &tocent) == -1)
+ {
+ intf_ErrMsg("problem occured when reading CD's TOCENTRY\n") ;
+ free (p_vcd->tracks_sector) ;
+ return -1 ;
+ }
+
+ p_vcd->tracks_sector[i] = tocent.cdte_addr.lba ;
+
+ }
+
+ /* finally we read the lead-out track toc entry */
+
+ tocent.cdte_track = CDROM_LEADOUT ;
+ tocent.cdte_format = CDROM_LBA ;
+ if (ioctl(fd, CDROMREADTOCENTRY, &tocent) == -1)
+ {
+ intf_ErrMsg("problem occured when readind CD's
+ lead-out track TOC entry") ;
+ free (p_vcd->tracks_sector) ;
+ return -1 ;
+ }
+
+ p_vcd->tracks_sector[p_vcd->nb_tracks + 1] = tocent.cdte_addr.lba ;
+
+ return 1 ;
+
+}
+
+/****************************************************************************
+ * VCD_sector_read : Function that reads a sector (2324 bytes) from VCD
+ ****************************************************************************/
+int VCD_sector_read ( struct thread_vcd_data_s * p_vcd, byte_t * p_buffer )
+{
+ byte_t p_read_block[VCD_SECTOR_SIZE] ;
+ struct cdrom_msf0 msf_cursor ;
+
+ msf_cursor = lba2msf( p_vcd->current_sector ) ;
+
+#ifdef DEBUG
+ intf_DbgMsg("Playing frame %d:%d-%d\n", msf_cursor.minute,
+ msf_cursor.second, msf_cursor.frame) ;
+#endif
+
+ memcpy(p_read_block, &msf_cursor, sizeof(struct cdrom_msf0)) ;
+
+ if (ioctl(p_vcd->vcdhandle, CDROMREADRAW, p_read_block) == -1)
+ {
+ intf_ErrMsg("problem occured when reading CD") ;
+ free (p_read_block) ;
+ return -1 ;
+ }
+
+ /* we don't want to keep the header of the read sector */
+ memcpy( p_buffer, &p_read_block[VCD_DATA_START],
+ VCD_DATA_SIZE );
+
+
+ p_vcd->current_sector ++;
+
+ if ( p_vcd->current_sector ==
+ p_vcd->tracks_sector[p_vcd->current_track + 1] )
+ {
+ p_vcd->b_end_of_track = 1;
+ }
+
+ return 1;
+}
+
+
+/*****************************************************************************
+ * lba2msf : converts a logical block address into a minute/second/frame
+ * address.
+ *****************************************************************************/
+
+struct cdrom_msf0 lba2msf( int lba)
+{
+ struct cdrom_msf0 msf_result ;
+
+ /* we add 2*CD_FRAMES since the 2 first seconds are not played*/
+
+ msf_result.minute = (lba+2*CD_FRAMES) / ( CD_FRAMES * CD_SECS ) ;
+ msf_result.second = ( (lba+2*CD_FRAMES) % ( CD_FRAMES * CD_SECS ) )
+ / CD_FRAMES ;
+ msf_result.frame = ( (lba+2*CD_FRAMES) % ( CD_FRAMES * CD_SECS ) )
+ % CD_FRAMES ;
+ return msf_result ;
+}
projects / vlc / commitdiff