| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| ////////////////////////////////////////////////////////////////////////////////// |
| // // |
| // File: pvgsmamrdecoderinterface.h // |
| // // |
| ////////////////////////////////////////////////////////////////////////////////// |
| |
| #ifndef _PVGSMAMR_DECODER_INTERFACE_H |
| #define _PVGSMAMR_DECODER_INTERFACE_H |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| typedef struct |
| { |
| int16_t prev_ft; |
| int16_t prev_mode; |
| } RX_State; |
| |
| |
| typedef struct tPVAmrDecoderExternal |
| { |
| /* |
| * INPUT: |
| * Pointer to the input buffer that contains the encoded bistream data. |
| * The data is filled in such that the first bit transmitted is |
| * the most-significant bit (MSB) of the first array element. |
| * The buffer is accessed in a linear fashion for speed, and the number of |
| * bytes consumed varies frame to frame. This is use for mime/ietf data |
| */ |
| uint8_t *pInputBuffer; |
| |
| /* |
| * INPUT: |
| * Pointer to the input buffer that contains the encoded stream data. |
| * The data is filled such that the first bit transmitted is |
| * in the first int16_t element. |
| * The buffer is accessed in a linear fashion for speed, and the number of |
| * bytes consumed varies frame to frame. |
| */ |
| int16_t *pInputSampleBuffer; |
| |
| /* |
| * INPUT: (but what is pointed to is an output) |
| * Pointer to the output buffer to hold the 16-bit PCM audio samples. |
| */ |
| int16_t *pOutputBuffer; |
| |
| /* |
| * INPUT: |
| * Number of requested output audio channels. This relieves the calling |
| * environment from having to perform stereo-to-mono or mono-to-stereo |
| * conversions. |
| */ |
| int32_t desiredChannels; |
| |
| /* |
| * INPUT: |
| * Format type of the encoded bitstream. |
| */ |
| bitstream_format input_format; |
| |
| /* |
| * OUTPUT: |
| * The sampling rate decoded from the bitstream, in units of |
| * samples/second. For this release of the library this value does |
| * not change from frame to frame, but future versions will. |
| */ |
| int32_t samplingRate; |
| |
| /* |
| * OUTPUT: |
| * This value is the bitrate in units of bits/second. IT |
| * is calculated using the number of bits consumed for the current frame, |
| * and then multiplying by the sampling_rate, divided by points in a frame. |
| * This value can changes frame to frame. |
| */ |
| int32_t bitRate; |
| |
| /* |
| * OUTPUT: |
| * The number of channels decoded from the bitstream. The output data |
| * will have be the amount specified in the variable desiredChannels, |
| * this output is informative only, and can be ignored. |
| */ |
| int32_t encodedChannels; |
| |
| /* |
| * OUTPUT: |
| * This value is the number of output PCM samples per channel. |
| * It is 320. |
| */ |
| int16_t frameLength; |
| |
| /* |
| * OUTPUT: |
| * This value is the quality indicator. 1 (good) 0 (bad) |
| */ |
| uint8_t quality; |
| |
| |
| /* |
| * OUTPUT: |
| * GSM AMR NB and WB mode (i.e. bit-rate ) |
| */ |
| int16_t mode; |
| int16_t mode_old; |
| |
| /* |
| * OUTPUT: |
| * GSM AMR NB and WB frame type ( speech_good, speech_bad, sid, etc.) |
| */ |
| int16_t frame_type; |
| |
| int16_t reset_flag; |
| int16_t reset_flag_old; |
| |
| /* |
| * OUTPUT: |
| * Decoder status |
| */ |
| int32_t status; |
| |
| /* |
| * OUTPUT: |
| * Rx status state |
| */ |
| RX_State rx_state; |
| |
| } tPVAmrDecoderExternal; |
| |
| #endif |
| |