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Diffstat (limited to 'tinyDAV/src/audio/tdav_producer_audio.c')
| -rw-r--r-- | tinyDAV/src/audio/tdav_producer_audio.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/tinyDAV/src/audio/tdav_producer_audio.c b/tinyDAV/src/audio/tdav_producer_audio.c new file mode 100644 index 0000000..8c73c9f --- /dev/null +++ b/tinyDAV/src/audio/tdav_producer_audio.c @@ -0,0 +1,133 @@ +/* +* Copyright (C) 2010-2011 Mamadou Diop. +* +* Contact: Mamadou Diop <diopmamadou(at)doubango.org> +* +* This file is part of Open Source Doubango Framework. +* +* DOUBANGO 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 3 of the License, or +* (at your option) any later version. +* +* DOUBANGO 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 DOUBANGO. +* +*/ + +/**@file tdav_producer_audio.c + * @brief Base class for all Audio producers. + * + * @author Mamadou Diop <diopmamadou(at)doubango.org> + * + + */ +#include "tinydav/audio/tdav_producer_audio.h" + +#include "tinymedia/tmedia_defaults.h" + +#define TDAV_PRODUCER_BITS_PER_SAMPLE_DEFAULT 16 +#define TDAV_PRODUCER_CHANNELS_DEFAULT 1 +#define TDAV_PRODUCER_RATE_DEFAULT 8000 +#define TDAV_PRODUCER_PTIME_DEFAULT 20 +#define TDAV_PRODUCER_AUDIO_GAIN_MAX 15 + +#include "tsk_string.h" +#include "tsk_debug.h" + +/** Initialize Audio producer +* @param self The producer to initialize +*/ +int tdav_producer_audio_init(tdav_producer_audio_t* self) +{ + int ret; + + if(!self){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + /* base */ + if((ret = tmedia_producer_init(TMEDIA_PRODUCER(self)))){ + return ret; + } + + /* self (should be update by prepare() by using the codec's info)*/ + TMEDIA_PRODUCER(self)->audio.bits_per_sample = TDAV_PRODUCER_BITS_PER_SAMPLE_DEFAULT; + TMEDIA_PRODUCER(self)->audio.channels = TDAV_PRODUCER_CHANNELS_DEFAULT; + TMEDIA_PRODUCER(self)->audio.rate = TDAV_PRODUCER_RATE_DEFAULT; + TMEDIA_PRODUCER(self)->audio.ptime = TDAV_PRODUCER_PTIME_DEFAULT; + TMEDIA_PRODUCER(self)->audio.gain = TSK_MIN(tmedia_defaults_get_audio_producer_gain(), TDAV_PRODUCER_AUDIO_GAIN_MAX); + + return 0; +} + +/** +* Generic function to compare two producers. +* @param producer1 The first producer to compare. +* @param producer2 The second producer to compare. +* @retval Returns an integral value indicating the relationship between the two producers: +* <0 : @a producer1 less than @a producer2.<br> +* 0 : @a producer1 identical to @a producer2.<br> +* >0 : @a producer1 greater than @a producer2.<br> +*/ +int tdav_producer_audio_cmp(const tsk_object_t* producer1, const tsk_object_t* producer2) +{ + int ret; + tsk_subsat_int32_ptr(producer1, producer2, &ret); + return ret; +} + +int tdav_producer_audio_set(tdav_producer_audio_t* self, const tmedia_param_t* param) +{ + if(!self){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + + if(param->plugin_type == tmedia_ppt_producer){ + if(param->value_type == tmedia_pvt_int32){ + if(tsk_striequals(param->key, "gain")){ + int32_t gain = *((int32_t*)param->value); + if(gain<TDAV_PRODUCER_AUDIO_GAIN_MAX && gain>=0){ + TMEDIA_PRODUCER(self)->audio.gain = (uint8_t)gain; + TSK_DEBUG_INFO("audio producer gain=%u", gain); + } + else{ + TSK_DEBUG_ERROR("%u is invalid as gain value", gain); + return -2; + } + } + else if(tsk_striequals(param->key, "volume")){ + TMEDIA_PRODUCER(self)->audio.volume = TSK_TO_INT32((uint8_t*)param->value); + TMEDIA_PRODUCER(self)->audio.volume = TSK_CLAMP(0, TMEDIA_PRODUCER(self)->audio.volume, 100); + TSK_DEBUG_INFO("audio producer volume=%u", TMEDIA_PRODUCER(self)->audio.volume); + } + } + } + + return 0; +} + +/** Deinitialize a producer +*/ +int tdav_producer_audio_deinit(tdav_producer_audio_t* self) +{ + int ret; + + if(!self){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + + /* base */ + if((ret = tmedia_producer_deinit(TMEDIA_PRODUCER(self)))){ + return ret; + } + + return ret; +}
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