133 lines
4.1 KiB
C
Executable File
133 lines
4.1 KiB
C
Executable File
/*
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* Copyright (C) 2010-2011 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tdav_producer_audio.c
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* @brief Base class for all Audio producers.
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*
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* @author Mamadou Diop <diopmamadou(at)doubango.org>
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*
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*/
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#include "tinydav/audio/tdav_producer_audio.h"
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#include "tinymedia/tmedia_defaults.h"
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#define TDAV_PRODUCER_BITS_PER_SAMPLE_DEFAULT 16
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#define TDAV_PRODUCER_CHANNELS_DEFAULT 1
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#define TDAV_PRODUCER_RATE_DEFAULT 8000
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#define TDAV_PRODUCER_PTIME_DEFAULT 20
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#define TDAV_PRODUCER_AUDIO_GAIN_MAX 15
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#include "tsk_string.h"
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#include "tsk_debug.h"
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/** Initialize Audio producer
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* @param self The producer to initialize
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*/
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int tdav_producer_audio_init(tdav_producer_audio_t* self)
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{
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int ret;
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if(!self) {
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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/* base */
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if((ret = tmedia_producer_init(TMEDIA_PRODUCER(self)))) {
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return ret;
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}
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/* self (should be update by prepare() by using the codec's info)*/
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TMEDIA_PRODUCER(self)->audio.bits_per_sample = TDAV_PRODUCER_BITS_PER_SAMPLE_DEFAULT;
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TMEDIA_PRODUCER(self)->audio.channels = TDAV_PRODUCER_CHANNELS_DEFAULT;
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TMEDIA_PRODUCER(self)->audio.rate = TDAV_PRODUCER_RATE_DEFAULT;
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TMEDIA_PRODUCER(self)->audio.ptime = TDAV_PRODUCER_PTIME_DEFAULT;
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TMEDIA_PRODUCER(self)->audio.gain = TSK_MIN(tmedia_defaults_get_audio_producer_gain(), TDAV_PRODUCER_AUDIO_GAIN_MAX);
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return 0;
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}
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/**
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* Generic function to compare two producers.
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* @param producer1 The first producer to compare.
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* @param producer2 The second producer to compare.
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* @retval Returns an integral value indicating the relationship between the two producers:
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* <0 : @a producer1 less than @a producer2.<br>
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* 0 : @a producer1 identical to @a producer2.<br>
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* >0 : @a producer1 greater than @a producer2.<br>
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*/
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int tdav_producer_audio_cmp(const tsk_object_t* producer1, const tsk_object_t* producer2)
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{
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int ret;
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tsk_subsat_int32_ptr(producer1, producer2, &ret);
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return ret;
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}
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int tdav_producer_audio_set(tdav_producer_audio_t* self, const tmedia_param_t* param)
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{
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if(!self) {
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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if(param->plugin_type == tmedia_ppt_producer) {
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if(param->value_type == tmedia_pvt_int32) {
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if(tsk_striequals(param->key, "gain")) {
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int32_t gain = *((int32_t*)param->value);
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if(gain<TDAV_PRODUCER_AUDIO_GAIN_MAX && gain>=0) {
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TMEDIA_PRODUCER(self)->audio.gain = (uint8_t)gain;
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TSK_DEBUG_INFO("audio producer gain=%u", gain);
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}
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else {
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TSK_DEBUG_ERROR("%u is invalid as gain value", gain);
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return -2;
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}
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}
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else if(tsk_striequals(param->key, "volume")) {
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TMEDIA_PRODUCER(self)->audio.volume = TSK_TO_INT32((uint8_t*)param->value);
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TMEDIA_PRODUCER(self)->audio.volume = TSK_CLAMP(0, TMEDIA_PRODUCER(self)->audio.volume, 100);
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TSK_DEBUG_INFO("audio producer volume=%u", TMEDIA_PRODUCER(self)->audio.volume);
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}
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}
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}
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return 0;
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}
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/** Deinitialize a producer
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*/
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int tdav_producer_audio_deinit(tdav_producer_audio_t* self)
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{
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int ret;
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if(!self) {
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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/* base */
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if((ret = tmedia_producer_deinit(TMEDIA_PRODUCER(self)))) {
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return ret;
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}
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return ret;
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} |