--- /dev/null
+/*****************************************************************************
+ * lpcm_decoder.h : lpcm decoder interface
+ *****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * 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 02111-1307, USA.
+ *****************************************************************************/
+
+typedef struct lpcmdec_s lpcmdec_t;
+
+typedef struct lpcm_sync_info_s {
+ int sample_rate; /* sample rate in Hz */
+ int frame_size; /* frame size in bytes */
+ int bit_rate; /* nominal bit rate in kbps */
+} lpcm_sync_info_t;
+
+typedef struct lpcm_byte_stream_s {
+ u8 * p_byte;
+ u8 * p_end;
+ void * info;
+} lpcm_byte_stream_t;
+
+
+int lpcm_init (lpcmdec_t * p_lpcmdec);
+int lpcm_sync_frame (lpcmdec_t * p_lpcmdec, lpcm_sync_info_t * p_sync_info);
+int lpcm_decode_frame (lpcmdec_t * p_lcpmdec, s16 * buffer);
+//static lpcm_byte_stream_t * lpcm_byte_stream (lcpmdec_t * p_lpcmdec);
+
+
+void lpcm_byte_stream_next (lpcm_byte_stream_t * p_byte_stream);
+
+typedef struct lpcm_bit_stream_s {
+ u32 buffer;
+ int i_available;
+ lpcm_byte_stream_t byte_stream;
+
+} lpcm_bit_stream_t;
+
+struct lpcmdec_s {
+ /*
+ * Input properties
+ */
+
+ /* The bit stream structure handles the PES stream at the bit level */
+ lpcm_bit_stream_t bit_stream;
+};
+
+
+static lpcm_byte_stream_t * lpcm_byte_stream (lpcmdec_t * p_lpcmdec)
+{
+ return &(p_lpcmdec->bit_stream.byte_stream);
+}
--- /dev/null
+/*****************************************************************************
+ * lpcm_decoder_thread.h : lpcm decoder thread interface
+ *****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * 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 02111-1307, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * lpcmdec_thread_t : lpcm decoder thread descriptor
+ *****************************************************************************/
+typedef struct lpcmdec_thread_s
+{
+ /*
+ * Thread properties
+ */
+ vlc_thread_t thread_id; /* id for thread functions */
+ boolean_t b_die; /* `die' flag */
+ boolean_t b_error; /* `error' flag */
+
+ /*
+ * Input properties
+ */
+ decoder_fifo_t fifo; /* stores the PES stream data */
+ input_thread_t * p_input;
+ ts_packet_t * p_ts;
+ int sync_ptr; /* sync ptr from lpcm magic header */
+
+ /*
+ * Decoder properties
+ */
+
+ lpcmdec_t lpcm_decoder;
+
+ /*
+ * Output properties
+ */
+ aout_fifo_t * p_aout_fifo; /* stores the decompressed audio frames */
+ aout_thread_t * p_aout; /* needed to create the audio fifo */
+
+} lpcmdec_thread_t;
+
+/*****************************************************************************
+ * Prototypes
+ *****************************************************************************/
+lpcmdec_thread_t * lpcmdec_CreateThread( input_thread_t * p_input );
+void lpcmdec_DestroyThread( lpcmdec_thread_t * p_lcpmdec );
--- /dev/null
+/*****************************************************************************
+ * lpcm_decoder_thread.c: lpcm decoder thread
+ *****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * 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 02111-1307, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include "defs.h"
+
+#include <unistd.h> /* getpid() */
+
+#include <stdio.h> /* "intf_msg.h" */
+#include <stdlib.h> /* malloc(), free() */
+#include <sys/types.h> /* on BSD, uio.h needs types.h */
+#include <sys/uio.h> /* "input.h" */
+
+#include "config.h"
+#include "common.h"
+#include "threads.h"
+#include "mtime.h"
+#include "plugins.h"
+#include "debug.h" /* "input_netlist.h" */
+
+#include "intf_msg.h" /* intf_DbgMsg(), intf_ErrMsg() */
+
+#include "input.h" /* pes_packet_t */
+#include "input_netlist.h" /* input_NetlistFreePES() */
+#include "decoder_fifo.h" /* DECODER_FIFO_(ISEMPTY|START|INCSTART)() */
+
+#include "audio_output.h"
+
+#include "lpcm_decoder.h"
+#include "lpcm_decoder_thread.h"
+
+#define LPCMDEC_FRAME_SIZE (2*1536) /* May not be usefull */
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int InitThread (lpcmdec_thread_t * p_adec);
+static void RunThread (lpcmdec_thread_t * p_adec);
+static void ErrorThread (lpcmdec_thread_t * p_adec);
+static void EndThread (lpcmdec_thread_t * p_adec);
+
+/*****************************************************************************
+ * lpcmdec_CreateThread: creates an lpcm decoder thread
+ *****************************************************************************/
+lpcmdec_thread_t * lpcmdec_CreateThread (input_thread_t * p_input)
+{
+ lpcmdec_thread_t * p_lpcmdec;
+ fprintf (stderr, "LPCM Debug: creating lpcm decoder thread\n");
+
+ /* Allocate the memory needed to store the thread's structure */
+ if ((p_lpcmdec = (lpcmdec_thread_t *)malloc (sizeof(lpcmdec_thread_t))) == NULL) {
+ fprintf (stderr, "LPCM Error: not enough memory for lpcmdec_CreateThread() to create the new thread\n");
+ return NULL;
+ }
+
+ /*
+ * Initialize the thread properties
+ */
+ p_lpcmdec->b_die = 0;
+ p_lpcmdec->b_error = 0;
+
+ /*
+ * Initialize the input properties
+ */
+ /* Initialize the decoder fifo's data lock and conditional variable and set
+ * its buffer as empty */
+ vlc_mutex_init (&p_lpcmdec->fifo.data_lock);
+ vlc_cond_init (&p_lpcmdec->fifo.data_wait);
+ p_lpcmdec->fifo.i_start = 0;
+ p_lpcmdec->fifo.i_end = 0;
+
+ /* Initialize the lpcm decoder structures */
+ lpcm_init (&p_lpcmdec->lpcm_decoder);
+
+ /* Initialize the bit stream structure */
+ p_lpcmdec->p_input = p_input;
+
+ /*
+ * Initialize the output properties
+ */
+ p_lpcmdec->p_aout = p_input->p_aout;
+ p_lpcmdec->p_aout_fifo = NULL;
+
+ /* Spawn the lpcm decoder thread */
+ if (vlc_thread_create(&p_lpcmdec->thread_id, "lpcm decoder", (vlc_thread_func_t)RunThread, (void *)p_lpcmdec)) {
+ fprintf (stderr, "LPCM Error: can't spawn lpcm decoder thread\n");
+ free (p_lpcmdec);
+ return NULL;
+ }
+
+ fprintf (stderr, "LPCM Debug: lpcm decoder thread (%p) created\n", p_lpcmdec);
+ return p_lpcmdec;
+}
+
+/*****************************************************************************
+ * lpcmdec_DestroyThread: destroys an lpcm decoder thread
+ *****************************************************************************/
+void lpcmdec_DestroyThread (lpcmdec_thread_t * p_lpcmdec)
+{
+ fprintf (stderr, "LPCM Debug: requesting termination of lpcm decoder thread %p\n", p_lpcmdec);
+
+ /* Ask thread to kill itself */
+ p_lpcmdec->b_die = 1;
+
+ /* Make sure the decoder thread leaves the GetByte() function */
+ vlc_mutex_lock (&(p_lpcmdec->fifo.data_lock));
+ vlc_cond_signal (&(p_lpcmdec->fifo.data_wait));
+ vlc_mutex_unlock (&(p_lpcmdec->fifo.data_lock));
+
+ /* Waiting for the decoder thread to exit */
+ /* Remove this as soon as the "status" flag is implemented */
+ vlc_thread_join (p_lpcmdec->thread_id);
+}
+
+/* Following functions are local */
+
+/*****************************************************************************
+ * InitThread : initialize an lpcm decoder thread
+ *****************************************************************************/
+static int InitThread (lpcmdec_thread_t * p_lpcmdec)
+{
+ aout_fifo_t aout_fifo;
+ lpcm_byte_stream_t * byte_stream;
+
+ fprintf (stderr, "LPCM Debug: initializing lpcm decoder thread %p\n", p_lpcmdec);
+
+ /* Our first job is to initialize the bit stream structure with the
+ * beginning of the input stream */
+ vlc_mutex_lock (&p_lpcmdec->fifo.data_lock);
+ while (DECODER_FIFO_ISEMPTY(p_lpcmdec->fifo)) {
+ if (p_lpcmdec->b_die) {
+ vlc_mutex_unlock (&p_lpcmdec->fifo.data_lock);
+ return -1;
+ }
+ vlc_cond_wait (&p_lpcmdec->fifo.data_wait, &p_lpcmdec->fifo.data_lock);
+ }
+ p_lpcmdec->p_ts = DECODER_FIFO_START (p_lpcmdec->fifo)->p_first_ts;
+ byte_stream = lpcm_byte_stream (&p_lpcmdec->lpcm_decoder);
+ byte_stream->p_byte =
+ p_lpcmdec->p_ts->buffer + p_lpcmdec->p_ts->i_payload_start;
+ byte_stream->p_end =
+ p_lpcmdec->p_ts->buffer + p_lpcmdec->p_ts->i_payload_end;
+ byte_stream->info = p_lpcmdec;
+ vlc_mutex_unlock (&p_lpcmdec->fifo.data_lock);
+
+ aout_fifo.i_type = AOUT_ADEC_STEREO_FIFO;
+ aout_fifo.i_channels = 2;
+ aout_fifo.b_stereo = 1;
+
+ aout_fifo.l_frame_size = LPCMDEC_FRAME_SIZE;
+
+ /* Creating the audio output fifo */
+ if ((p_lpcmdec->p_aout_fifo = aout_CreateFifo(p_lpcmdec->p_aout, &aout_fifo)) == NULL) {
+ return -1;
+ }
+
+ fprintf (stderr,"LPCM Debug: lpcm decoder thread %p initialized\n", p_lpcmdec);
+ return 0;
+}
+
+/*****************************************************************************
+ * RunThread : lpcm decoder thread
+ *****************************************************************************/
+static void RunThread (lpcmdec_thread_t * p_lpcmdec)
+{
+ int sync;
+
+ fprintf (stderr,"LPCM Debug: running lpcm decoder thread (%p) (pid== %i)\n", p_lpcmdec, getpid());
+
+ msleep (INPUT_PTS_DELAY);
+
+ /* Initializing the lpcm decoder thread */
+ if (InitThread (p_lpcmdec))
+ {
+ p_lpcmdec->b_error = 1;
+ }
+
+ sync = 0;
+ p_lpcmdec->sync_ptr = 0;
+
+ /* lpcm decoder thread's main loop */
+ /* FIXME : do we have enough room to store the decoded frames ?? */
+
+ while ((!p_lpcmdec->b_die) && (!p_lpcmdec->b_error))
+ {
+ s16 * buffer;
+ lpcm_sync_info_t sync_info;
+
+ if (!sync)
+ {
+ /* have to find a synchro point */
+ }
+
+ if (DECODER_FIFO_START(p_lpcmdec->fifo)->b_has_pts)
+ {
+ p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] = DECODER_FIFO_START(p_lpcmdec->fifo)->i_pts;
+ DECODER_FIFO_START(p_lpcmdec->fifo)->b_has_pts = 0;
+ }
+ else
+ {
+ p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] = LAST_MDATE;
+ }
+
+ p_lpcmdec->p_aout_fifo->l_rate = sync_info.sample_rate;
+
+ buffer = ((s16 *)p_lpcmdec->p_aout_fifo->buffer) + (p_lpcmdec->p_aout_fifo->l_end_frame * LPCMDEC_FRAME_SIZE);
+
+ if (lpcm_decode_frame (&p_lpcmdec->lpcm_decoder, buffer))
+ {
+ sync = 0;
+ goto bad_frame;
+ }
+
+ vlc_mutex_lock (&p_lpcmdec->p_aout_fifo->data_lock);
+ p_lpcmdec->p_aout_fifo->l_end_frame = (p_lpcmdec->p_aout_fifo->l_end_frame + 1) & AOUT_FIFO_SIZE;
+ vlc_cond_signal (&p_lpcmdec->p_aout_fifo->data_wait);
+ vlc_mutex_unlock (&p_lpcmdec->p_aout_fifo->data_lock);
+
+ fprintf(stderr, "LPCM Debug: %x\n", *buffer);
+ bad_frame:
+ }
+
+ /* If b_error is set, the lpcm decoder thread enters the error loop */
+ if (p_lpcmdec->b_error)
+ {
+ ErrorThread (p_lpcmdec);
+ }
+
+ /* End of the lpcm decoder thread */
+ EndThread (p_lpcmdec);
+}
+
+/*****************************************************************************
+ * ErrorThread : lpcm decoder's RunThread() error loop
+ *****************************************************************************/
+static void ErrorThread (lpcmdec_thread_t * p_lpcmdec)
+{
+ /* We take the lock, because we are going to read/write the start/end
+ * indexes of the decoder fifo */
+ vlc_mutex_lock (&p_lpcmdec->fifo.data_lock);
+
+ /* Wait until a `die' order is sent */
+ while (!p_lpcmdec->b_die) {
+ /* Trash all received PES packets */
+ while (!DECODER_FIFO_ISEMPTY(p_lpcmdec->fifo)) {
+ input_NetlistFreePES (p_lpcmdec->p_input, DECODER_FIFO_START(p_lpcmdec->fifo));
+ DECODER_FIFO_INCSTART (p_lpcmdec->fifo);
+ }
+
+ /* Waiting for the input thread to put new PES packets in the fifo */
+ vlc_cond_wait (&p_lpcmdec->fifo.data_wait, &p_lpcmdec->fifo.data_lock);
+ }
+
+ /* We can release the lock before leaving */
+ vlc_mutex_unlock (&p_lpcmdec->fifo.data_lock);
+}
+
+/*****************************************************************************
+ * EndThread : lpcm decoder thread destruction
+ *****************************************************************************/
+static void EndThread (lpcmdec_thread_t * p_lpcmdec)
+{
+ fprintf (stderr, "LPCM Debug: destroying lpcm decoder thread %p\n", p_lpcmdec);
+
+ /* If the audio output fifo was created, we destroy it */
+ if (p_lpcmdec->p_aout_fifo != NULL) {
+ aout_DestroyFifo (p_lpcmdec->p_aout_fifo);
+
+ /* Make sure the output thread leaves the NextFrame() function */
+ vlc_mutex_lock (&(p_lpcmdec->p_aout_fifo->data_lock));
+ vlc_cond_signal (&(p_lpcmdec->p_aout_fifo->data_wait));
+ vlc_mutex_unlock (&(p_lpcmdec->p_aout_fifo->data_lock));
+ }
+
+ /* Destroy descriptor */
+ free (p_lpcmdec);
+
+ fprintf (stderr, "LPCM Debug: lpcm decoder thread %p destroyed\n", p_lpcmdec);
+}
+
+void lpcm_byte_stream_next (lpcm_byte_stream_t * p_byte_stream)
+{
+// lpcmdec_thread_t * p_lpcmdec = p_byte_stream->info;
+
+ /* We are looking for the next TS packet that contains real data,
+ * and not just a PES header */
+}
projects / vlc / commitdiff