root/applications/dashcast/audio_data.c

DEFINITIONS

1. dc_audio_data_set_default
2. dc_audio_data_init
3. dc_audio_input_data_init
4. dc_audio_input_data_destroy
5. dc_audio_inout_data_end_signal

/*
 *                      GPAC - Multimedia Framework C SDK
 *
 *                      Authors: Arash Shafiei
 *                      Copyright (c) Telecom ParisTech 2000-2013
 *                                      All rights reserved
 *
 *  This file is part of GPAC / dashcast
 *
 *  GPAC is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  GPAC 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include "audio_data.h"


void dc_audio_data_set_default(AudioDataConf *audio_data_conf)
{
        strcpy(audio_data_conf->filename, "");
        strcpy(audio_data_conf->format, "");
        strcpy(audio_data_conf->codec, "");
        audio_data_conf->bitrate = -1;
        audio_data_conf->channels= -1;
        audio_data_conf->samplerate = -1;
}

void dc_audio_data_init(AudioDataConf *audio_data_conf, char *filename, char *format)
{
        if (filename != NULL && strlen(filename) > 0)
                strcpy(audio_data_conf->filename, filename);
        else
                strcpy(audio_data_conf->filename, "");

        if (format != NULL && strlen(format) > 0)
                strcpy(audio_data_conf->format, format);
        else
                strcpy(audio_data_conf->format, "");
}

int dc_audio_input_data_init(AudioInputData *audio_input_data, int channels, int samplerate, int num_consumers, int mode)
{
        int i;

        dc_producer_init(&audio_input_data->producer, AUDIO_CB_SIZE, "audio decoder");
        dc_circular_buffer_create(&audio_input_data->circular_buf, AUDIO_CB_SIZE, mode, num_consumers);

        for (i = 0; i < AUDIO_CB_SIZE; i++) {
                AudioDataNode *audio_data_node = (AudioDataNode*)gf_malloc(sizeof(AudioDataNode));
                audio_input_data->circular_buf.list[i].data = (void *) audio_data_node;

                audio_data_node->abuf_size = MAX_AUDIO_PACKET_SIZE;
                audio_data_node->abuf = (uint8_t*)gf_malloc(audio_data_node->abuf_size * sizeof(uint8_t));
        }

        audio_input_data->aframe = FF_ALLOC_FRAME();
        if (audio_input_data->aframe == NULL) {
                GF_LOG(GF_LOG_ERROR, GF_LOG_DASH, ("Cannot initialize AudioInputData"));
                return -1;
        }

        audio_input_data->channels = channels;
        audio_input_data->samplerate = samplerate;

        return 0;
}

void dc_audio_input_data_destroy(AudioInputData *audio_input_data)
{
        int i;
        if (audio_input_data->circular_buf.list) {
                for (i = 0; i < AUDIO_CB_SIZE; i++) {
                        AudioDataNode *audio_data_node = (AudioDataNode*)audio_input_data->circular_buf.list[i].data;
                        gf_free(audio_data_node->abuf);
                        gf_free(audio_data_node);
                }
        }

        dc_circular_buffer_destroy(&audio_input_data->circular_buf);
}

void dc_audio_inout_data_end_signal(AudioInputData *audio_input_data)
{
        dc_producer_end_signal(&audio_input_data->producer, &audio_input_data->circular_buf);
        dc_producer_end_signal_previous(&audio_input_data->producer, &audio_input_data->circular_buf);
}