| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| /* |
| * This file generates databases with information about all supported audio |
| * codecs. |
| */ |
| |
| #ifndef MODULES_AUDIO_CODING_ACM2_ACM_CODEC_DATABASE_H_ |
| #define MODULES_AUDIO_CODING_ACM2_ACM_CODEC_DATABASE_H_ |
| |
| #include "common_types.h" // NOLINT(build/include) |
| #include "modules/audio_coding/acm2/rent_a_codec.h" |
| |
| namespace webrtc { |
| |
| namespace acm2 { |
| |
| // TODO(tlegrand): replace class ACMCodecDB with a namespace. |
| class ACMCodecDB { |
| public: |
| // kMaxNumCodecs - Maximum number of codecs that can be activated in one |
| // build. |
| // kMaxNumPacketSize - Maximum number of allowed packet sizes for one codec. |
| // These might need to be increased if adding a new codec to the database |
| static const int kMaxNumCodecs = 50; |
| static const int kMaxNumPacketSize = 6; |
| |
| // Codec specific settings |
| // |
| // num_packet_sizes - number of allowed packet sizes. |
| // packet_sizes_samples - list of the allowed packet sizes. |
| // basic_block_samples - assigned a value different from 0 if the codec |
| // requires to be fed with a specific number of samples |
| // that can be different from packet size. |
| // channel_support - number of channels supported to encode; |
| // 1 = mono, 2 = stereo, etc. |
| struct CodecSettings { |
| int num_packet_sizes; |
| int packet_sizes_samples[kMaxNumPacketSize]; |
| int basic_block_samples; |
| size_t channel_support; |
| }; |
| |
| // Returns codec id from database, given the information received in the input |
| // [codec_inst]. |
| // Input: |
| // [codec_inst] - Information about the codec for which we require the |
| // database id. |
| // Return: |
| // codec id if successful, otherwise < 0. |
| static int CodecNumber(const CodecInst& codec_inst); |
| static int CodecId(const CodecInst& codec_inst); |
| static int CodecId(const char* payload_name, int frequency, size_t channels); |
| static int ReceiverCodecNumber(const CodecInst& codec_inst); |
| |
| // Databases with information about the supported codecs |
| // database_ - stored information about all codecs: payload type, name, |
| // sampling frequency, packet size in samples, default channel |
| // support, and default rate. |
| // codec_settings_ - stored codec settings: number of allowed packet sizes, |
| // a vector with the allowed packet sizes, basic block |
| // samples, and max number of channels that are supported. |
| // neteq_decoders_ - list of supported decoders in NetEQ. |
| static const CodecInst database_[kMaxNumCodecs]; |
| static const CodecSettings codec_settings_[kMaxNumCodecs]; |
| static const NetEqDecoder neteq_decoders_[kMaxNumCodecs]; |
| }; |
| |
| } // namespace acm2 |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_CODING_ACM2_ACM_CODEC_DATABASE_H_ |