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Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/pvgsmamrdecoderinterface.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/common/pvgsmamrdecoderinterface.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/pvgsmamrdecoderinterface.h b/media/libstagefright/codecs/amrnb/common/pvgsmamrdecoderinterface.h new file mode 100644 index 0000000..ccbed44 --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/pvgsmamrdecoderinterface.h @@ -0,0 +1,183 @@ +/* ------------------------------------------------------------------ + * 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 + +/*---------------------------------------------------------------------------- +; ENUMERATED TYPEDEF'S +----------------------------------------------------------------------------*/ + +typedef enum +{ + /* + * One word (2-byte) to indicate type of frame type. + * One word (2-byte) to indicate frame type. + * One word (2-byte) to indicate mode. + * N words (2-byte) containing N bits (bit 0 = 0xff81, bit 1 = 0x007f). + */ + ETS = 0, /* Both AMR-Narrowband and AMR-Wideband */ + + /* + * One word (2-byte) for sync word (good frames: 0x6b21, bad frames: 0x6b20) + * One word (2-byte) for frame length N. + * N words (2-byte) containing N bits (bit 0 = 0x007f, bit 1 = 0x0081). + */ + ITU, /* AMR-Wideband */ + + /* + * AMR-WB MIME/storage format, see RFC 3267 (sections 5.1 and 5.3) for details + */ + MIME_IETF, + + WMF, /* AMR-Narrowband */ + + IF2 /* AMR-Narrowband */ + +} bitstream_format; + + + +/*---------------------------------------------------------------------------- +; 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 + |