/*****************************************************************************
* input_dec.c: Functions for the management of decoders
*****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
- * $Id: input_dec.c,v 1.1 2000/12/21 19:24:27 massiot Exp $
+ * Copyright (C) 1999-2001 VideoLAN
+ * $Id: input_dec.c,v 1.46 2002/08/29 23:53:22 massiot Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
/*****************************************************************************
* Preamble
*****************************************************************************/
-/* FIXME: we shouldn't be obliged to include these */
-#include "defs.h"
+#include <stdlib.h>
+#include <string.h> /* memcpy(), memset() */
+#include <sys/types.h> /* off_t */
-#include "config.h"
-#include "common.h"
-#include "threads.h"
-#include "mtime.h"
+#include <vlc/vlc.h>
#include "stream_control.h"
#include "input_ext-dec.h"
+#include "input_ext-intf.h"
+#include "input_ext-plugins.h"
+
+static decoder_fifo_t * CreateDecoderFifo( input_thread_t *,
+ es_descriptor_t * );
+static void DeleteDecoderFifo( decoder_fifo_t * );
/*****************************************************************************
* input_RunDecoder: spawns a new decoder thread
*****************************************************************************/
-vlc_thread_t input_RunDecoder( decoder_capabilities_t * p_decoder,
- void * p_data )
+decoder_fifo_t * input_RunDecoder( input_thread_t * p_input,
+ es_descriptor_t * p_es )
{
- return( p_decoder->pf_create_thread( p_data ) );
+ decoder_fifo_t *p_fifo;
+ int i_priority;
+
+ /* Create the decoder configuration structure */
+ p_fifo = CreateDecoderFifo( p_input, p_es );
+
+ if( p_fifo == NULL )
+ {
+ msg_Err( p_input, "could not create decoder fifo" );
+ return NULL;
+ }
+
+ /* Get a suitable module */
+ p_fifo->p_module = module_Need( p_fifo, "decoder", "$codec" );
+ if( p_fifo->p_module == NULL )
+ {
+ msg_Err( p_fifo, "no suitable decoder module for fourcc `%4.4s'",
+ (char*)&p_fifo->i_fourcc );
+ DeleteDecoderFifo( p_fifo );
+ vlc_object_destroy( p_fifo );
+ return NULL;
+ }
+
+ if ( p_es->i_cat == AUDIO_ES )
+ {
+ i_priority = VLC_THREAD_PRIORITY_AUDIO;
+ }
+ else
+ {
+ i_priority = VLC_THREAD_PRIORITY_LOW;
+ }
+
+ /* Spawn the decoder thread */
+ if( vlc_thread_create( p_fifo, "decoder", p_fifo->pf_run,
+ i_priority, VLC_FALSE ) )
+ {
+ msg_Err( p_fifo, "cannot spawn decoder thread \"%s\"",
+ p_fifo->p_module->psz_object_name );
+ module_Unneed( p_fifo, p_fifo->p_module );
+ return NULL;
+ }
+
+ p_input->stream.b_changed = 1;
+
+ return p_fifo;
}
+
/*****************************************************************************
* input_EndDecoder: kills a decoder thread and waits until it's finished
*****************************************************************************/
-void input_EndDecoder( decoder_fifo_t * p_decoder_fifo, vlc_thread_t thread_id )
+void input_EndDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
+{
+ int i_dummy;
+
+ p_es->p_decoder_fifo->b_die = 1;
+
+ /* Make sure the thread leaves the NextDataPacket() function by
+ * sending it a few null packets. */
+ for( i_dummy = 0; i_dummy < PADDING_PACKET_NUMBER; i_dummy++ )
+ {
+ input_NullPacket( p_input, p_es );
+ }
+
+ if( p_es->p_pes != NULL )
+ {
+ input_DecodePES( p_es->p_decoder_fifo, p_es->p_pes );
+ }
+
+ /* Waiting for the thread to exit */
+ /* I thought that unlocking was better since thread join can be long
+ * but it actually creates late pictures and freezes --stef */
+ /* vlc_mutex_unlock( &p_input->stream.stream_lock ); */
+ vlc_thread_join( p_es->p_decoder_fifo );
+ /* vlc_mutex_lock( &p_input->stream.stream_lock ); */
+
+ /* Delete decoder configuration */
+ DeleteDecoderFifo( p_es->p_decoder_fifo );
+
+ /* Unneed module */
+ module_Unneed( p_es->p_decoder_fifo, p_es->p_decoder_fifo->p_module );
+
+ /* Delete the fifo */
+ vlc_object_destroy( p_es->p_decoder_fifo );
+
+ /* Tell the input there is no more decoder */
+ p_es->p_decoder_fifo = NULL;
+
+ p_input->stream.b_changed = 1;
+}
+
+/*****************************************************************************
+ * input_DecodePES
+ *****************************************************************************
+ * Put a PES in the decoder's fifo.
+ *****************************************************************************/
+void input_DecodePES( decoder_fifo_t * p_decoder_fifo, pes_packet_t * p_pes )
{
- p_decoder_fifo->b_die = 1;
+ vlc_mutex_lock( &p_decoder_fifo->data_lock );
+
+ p_pes->p_next = NULL;
+ *p_decoder_fifo->pp_last = p_pes;
+ p_decoder_fifo->pp_last = &p_pes->p_next;
+ p_decoder_fifo->i_depth++;
- /* Make sure the thread leaves the NextDataPacket() function */
- vlc_mutex_lock( &p_decoder_fifo->data_lock);
+ /* Warn the decoder that it's got work to do. */
vlc_cond_signal( &p_decoder_fifo->data_wait );
vlc_mutex_unlock( &p_decoder_fifo->data_lock );
+}
- /* Waiting for the thread to exit */
- vlc_thread_join( thread_id );
+/*****************************************************************************
+ * input_EscapeDiscontinuity: send a NULL packet to the decoders
+ *****************************************************************************/
+void input_EscapeDiscontinuity( input_thread_t * p_input )
+{
+ int i_es, i;
+
+ for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
+ {
+ es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
+
+ if( p_es->p_decoder_fifo != NULL )
+ {
+ for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
+ {
+ input_NullPacket( p_input, p_es );
+ }
+ }
+ }
+}
+
+/*****************************************************************************
+ * input_EscapeAudioDiscontinuity: send a NULL packet to the audio decoders
+ *****************************************************************************/
+void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
+{
+ int i_es, i;
+
+ for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
+ {
+ es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
+
+ if( p_es->p_decoder_fifo != NULL && p_es->i_cat == AUDIO_ES )
+ {
+ for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
+ {
+ input_NullPacket( p_input, p_es );
+ }
+ }
+ }
+}
+
+/*****************************************************************************
+ * CreateDecoderFifo: create a decoder_fifo_t
+ *****************************************************************************/
+static decoder_fifo_t * CreateDecoderFifo( input_thread_t * p_input,
+ es_descriptor_t * p_es )
+{
+ decoder_fifo_t * p_fifo;
+
+ /* Decoder FIFO */
+ p_fifo = vlc_object_create( p_input, VLC_OBJECT_DECODER );
+ if( p_fifo == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return NULL;
+ }
- /* Freeing all packets still in the decoder fifo. */
- while( !DECODER_FIFO_ISEMPTY( *p_decoder_fifo ) )
+ /* Select a new ES */
+ p_input->stream.i_selected_es_number++;
+ p_input->stream.pp_selected_es = realloc(
+ p_input->stream.pp_selected_es,
+ p_input->stream.i_selected_es_number
+ * sizeof(es_descriptor_t *) );
+ if( p_input->stream.pp_selected_es == NULL )
{
- p_decoder_fifo->pf_delete_pes( p_decoder_fifo->p_packets_mgt,
- DECODER_FIFO_START( *p_decoder_fifo ) );
- DECODER_FIFO_INCSTART( *p_decoder_fifo );
+ msg_Err( p_input, "out of memory" );
+ vlc_object_destroy( p_fifo );
+ return NULL;
}
+
+ p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number - 1]
+ = p_es;
+
+ /* Initialize the p_fifo structure */
+ vlc_mutex_init( p_input, &p_fifo->data_lock );
+ vlc_cond_init( p_input, &p_fifo->data_wait );
+ p_es->p_decoder_fifo = p_fifo;
+
+ p_fifo->i_id = p_es->i_id;
+ p_fifo->i_fourcc = p_es->i_fourcc;
+ p_fifo->p_demux_data = p_es->p_demux_data;
+
+ p_fifo->p_stream_ctrl = &p_input->stream.control;
+ p_fifo->p_sout = p_input->stream.p_sout;
+
+ p_fifo->p_first = NULL;
+ p_fifo->pp_last = &p_fifo->p_first;
+ p_fifo->i_depth = 0;
+ p_fifo->b_die = p_fifo->b_error = 0;
+ p_fifo->p_packets_mgt = p_input->p_method_data;
+
+ vlc_object_attach( p_fifo, p_input );
+
+ return p_fifo;
+}
+
+/*****************************************************************************
+ * DeleteDecoderFifo: destroy a decoder_fifo_t
+ *****************************************************************************/
+static void DeleteDecoderFifo( decoder_fifo_t * p_fifo )
+{
+ vlc_object_detach( p_fifo );
+
+ msg_Dbg( p_fifo, "killing decoder for 0x%x, fourcc `%4.4s', %d PES in FIFO",
+ p_fifo->i_id, (char*)&p_fifo->i_fourcc, p_fifo->i_depth );
+
+ /* Free all packets still in the decoder fifo. */
+ input_DeletePES( p_fifo->p_packets_mgt,
+ p_fifo->p_first );
+
+ /* Destroy the lock and cond */
+ vlc_cond_destroy( &p_fifo->data_wait );
+ vlc_mutex_destroy( &p_fifo->data_lock );
}
projects / vlc / blobdiff