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author | Diego Biurrun <diego@biurrun.de> | 2007-06-06 00:14:18 +0000 |
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committer | Diego Biurrun <diego@biurrun.de> | 2007-06-06 00:14:18 +0000 |
commit | 6f1af73557824b1872732b7823e881a14f870077 (patch) | |
tree | 3d22e9a9585b538bd4295898f1e2f5a89d36619b /libavcodec/amr.c | |
parent | 6f74b71ef0f5457b8cc736cb8f828ec1b75a217c (diff) | |
download | ffmpeg-6f1af73557824b1872732b7823e881a14f870077.tar.gz |
Give all wrappers for external libraries names starting with lib.
Originally committed as revision 9226 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/amr.c')
-rw-r--r-- | libavcodec/amr.c | 711 |
1 files changed, 0 insertions, 711 deletions
diff --git a/libavcodec/amr.c b/libavcodec/amr.c deleted file mode 100644 index afe597de23..0000000000 --- a/libavcodec/amr.c +++ /dev/null @@ -1,711 +0,0 @@ -/* - * AMR Audio decoder stub - * Copyright (c) 2003 the ffmpeg project - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - - /** @file - * Adaptive Multi-Rate (AMR) Audio decoder stub. - * - * This code implements both an AMR-NarrowBand (AMR-NB) and an AMR-WideBand - * (AMR-WB) audio encoder/decoder through external reference code from - * http://www.3gpp.org/. The license of the code from 3gpp is unclear so you - * have to download the code separately. Two versions exists: One fixed-point - * and one floating-point. For some reason the float encoder is significantly - * faster at least on a P4 1.5GHz (0.9s instead of 9.9s on a 30s audio clip - * at MR102). Both float and fixed point are supported for AMR-NB, but only - * float for AMR-WB. - * - * \section AMR-NB - * - * \subsection Float - * The float version (default) can be downloaded from: - * http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-610.zip - * - * \subsection Fixed-point - * The fixed-point (TS26.073) can be downloaded from: - * http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-600.zip - * - * \subsection Specification - * The specification for AMR-NB can be found in TS 26.071 - * (http://www.3gpp.org/ftp/Specs/html-info/26071.htm) and some other - * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm. - * - * \section AMR-WB - * - * \subsection Float - * The reference code can be downloaded from: - * http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-600.zip - * - * \subsection Fixed-point - * If someone wants to use the fixed point version it can be downloaded from: - * http://www.3gpp.org/ftp/Specs/archive/26_series/26.173/26173-571.zip. - * - * \subsection Specification - * The specification for AMR-WB can be found in TS 26.171 - * (http://www.3gpp.org/ftp/Specs/html-info/26171.htm) and some other - * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm. - * - */ - -#include "avcodec.h" - -#ifdef CONFIG_LIBAMR_NB_FIXED - -#define MMS_IO - -#include "amr/sp_dec.h" -#include "amr/d_homing.h" -#include "amr/typedef.h" -#include "amr/sp_enc.h" -#include "amr/sid_sync.h" -#include "amr/e_homing.h" - -#else -#include <amrnb/interf_dec.h> -#include <amrnb/interf_enc.h> -#endif - -static const char *nb_bitrate_unsupported = - "bitrate not supported: use one of 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7.95k, 10.2k or 12.2k\n"; -static const char *wb_bitrate_unsupported = - "bitrate not supported: use one of 6.6k, 8.85k, 12.65k, 14.25k, 15.85k, 18.25k, 19.85k, 23.05k, or 23.85k\n"; - -/* Common code for fixed and float version*/ -typedef struct AMR_bitrates -{ - int rate; - enum Mode mode; -} AMR_bitrates; - -/* Match desired bitrate */ -static int getBitrateMode(int bitrate) -{ - /* make the correspondance between bitrate and mode */ - AMR_bitrates rates[]={ {4750,MR475}, - {5150,MR515}, - {5900,MR59}, - {6700,MR67}, - {7400,MR74}, - {7950,MR795}, - {10200,MR102}, - {12200,MR122}, - }; - int i; - - for(i=0;i<8;i++) - { - if(rates[i].rate==bitrate) - { - return(rates[i].mode); - } - } - /* no bitrate matching, return an error */ - return -1; -} - -static void amr_decode_fix_avctx(AVCodecContext * avctx) -{ - const int is_amr_wb = 1 + (avctx->codec_id == CODEC_ID_AMR_WB); - - if(avctx->sample_rate == 0) - { - avctx->sample_rate = 8000 * is_amr_wb; - } - - if(avctx->channels == 0) - { - avctx->channels = 1; - } - - avctx->frame_size = 160 * is_amr_wb; -} - -#ifdef CONFIG_LIBAMR_NB_FIXED -/* fixed point version*/ -/* frame size in serial bitstream file (frame type + serial stream + flags) */ -#define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5) - -typedef struct AMRContext { - int frameCount; - Speech_Decode_FrameState *speech_decoder_state; - enum RXFrameType rx_type; - enum Mode mode; - Word16 reset_flag; - Word16 reset_flag_old; - - int enc_bitrate; - Speech_Encode_FrameState *enstate; - sid_syncState *sidstate; - enum TXFrameType tx_frametype; -} AMRContext; - -static int amr_nb_decode_init(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - s->frameCount=0; - s->speech_decoder_state=NULL; - s->rx_type = (enum RXFrameType)0; - s->mode= (enum Mode)0; - s->reset_flag=0; - s->reset_flag_old=1; - - if(Speech_Decode_Frame_init(&s->speech_decoder_state, "Decoder")) - { - av_log(avctx, AV_LOG_ERROR, "Speech_Decode_Frame_init error\n"); - return -1; - } - - amr_decode_fix_avctx(avctx); - - if(avctx->channels > 1) - { - av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n"); - return -1; - } - - return 0; -} - -static int amr_nb_encode_init(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - s->frameCount=0; - s->speech_decoder_state=NULL; - s->rx_type = (enum RXFrameType)0; - s->mode= (enum Mode)0; - s->reset_flag=0; - s->reset_flag_old=1; - - if(avctx->sample_rate!=8000) - { - av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n"); - return -1; - } - - if(avctx->channels!=1) - { - av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); - return -1; - } - - avctx->frame_size=160; - avctx->coded_frame= avcodec_alloc_frame(); - - if(Speech_Encode_Frame_init(&s->enstate, 0, "encoder") || sid_sync_init (&s->sidstate)) - { - av_log(avctx, AV_LOG_ERROR, "Speech_Encode_Frame_init error\n"); - return -1; - } - - if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0) - { - av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported); - return -1; - } - - return 0; -} - -static int amr_nb_encode_close(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - Speech_Encode_Frame_exit(&s->enstate); - sid_sync_exit (&s->sidstate); - av_freep(&avctx->coded_frame); - return 0; -} - -static int amr_nb_decode_close(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - Speech_Decode_Frame_exit(&s->speech_decoder_state); - return 0; -} - -static int amr_nb_decode_frame(AVCodecContext * avctx, - void *data, int *data_size, - uint8_t * buf, int buf_size) -{ - AMRContext *s = avctx->priv_data; - uint8_t*amrData=buf; - int offset=0; - UWord8 toc, q, ft; - Word16 serial[SERIAL_FRAMESIZE]; /* coded bits */ - Word16 *synth; - UWord8 *packed_bits; - static Word16 packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0}; - int i; - - //printf("amr_decode_frame data_size=%i buf=0x%X buf_size=%d frameCount=%d!!\n",*data_size,buf,buf_size,s->frameCount); - - synth=data; - - toc=amrData[offset]; - /* read rest of the frame based on ToC byte */ - q = (toc >> 2) & 0x01; - ft = (toc >> 3) & 0x0F; - - //printf("offset=%d, packet_size=%d amrData= 0x%X %X %X %X\n",offset,packed_size[ft],amrData[offset],amrData[offset+1],amrData[offset+2],amrData[offset+3]); - - offset++; - - packed_bits=amrData+offset; - - offset+=packed_size[ft]; - - //Unsort and unpack bits - s->rx_type = UnpackBits(q, ft, packed_bits, &s->mode, &serial[1]); - - //We have a new frame - s->frameCount++; - - if (s->rx_type == RX_NO_DATA) - { - s->mode = s->speech_decoder_state->prev_mode; - } - else { - s->speech_decoder_state->prev_mode = s->mode; - } - - /* if homed: check if this frame is another homing frame */ - if (s->reset_flag_old == 1) - { - /* only check until end of first subframe */ - s->reset_flag = decoder_homing_frame_test_first(&serial[1], s->mode); - } - /* produce encoder homing frame if homed & input=decoder homing frame */ - if ((s->reset_flag != 0) && (s->reset_flag_old != 0)) - { - for (i = 0; i < L_FRAME; i++) - { - synth[i] = EHF_MASK; - } - } - else - { - /* decode frame */ - Speech_Decode_Frame(s->speech_decoder_state, s->mode, &serial[1], s->rx_type, synth); - } - - //Each AMR-frame results in 160 16-bit samples - *data_size=160*2; - - /* if not homed: check whether current frame is a homing frame */ - if (s->reset_flag_old == 0) - { - /* check whole frame */ - s->reset_flag = decoder_homing_frame_test(&serial[1], s->mode); - } - /* reset decoder if current frame is a homing frame */ - if (s->reset_flag != 0) - { - Speech_Decode_Frame_reset(s->speech_decoder_state); - } - s->reset_flag_old = s->reset_flag; - - return offset; -} - - -static int amr_nb_encode_frame(AVCodecContext *avctx, - unsigned char *frame/*out*/, int buf_size, void *data/*in*/) -{ - short serial_data[250] = {0}; - AMRContext *s = avctx->priv_data; - int written; - - s->reset_flag = encoder_homing_frame_test(data); - - Speech_Encode_Frame(s->enstate, s->enc_bitrate, data, &serial_data[1], &s->mode); - - /* add frame type and mode */ - sid_sync (s->sidstate, s->mode, &s->tx_frametype); - - written = PackBits(s->mode, s->enc_bitrate, s->tx_frametype, &serial_data[1], frame); - - if (s->reset_flag != 0) - { - Speech_Encode_Frame_reset(s->enstate); - sid_sync_reset(s->sidstate); - } - return written; -} - - -#elif defined(CONFIG_LIBAMR_NB) /* Float point version*/ - -typedef struct AMRContext { - int frameCount; - void * decState; - int *enstate; - int enc_bitrate; -} AMRContext; - -static int amr_nb_decode_init(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - s->frameCount=0; - s->decState=Decoder_Interface_init(); - if(!s->decState) - { - av_log(avctx, AV_LOG_ERROR, "Decoder_Interface_init error\r\n"); - return -1; - } - - amr_decode_fix_avctx(avctx); - - if(avctx->channels > 1) - { - av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n"); - return -1; - } - - return 0; -} - -static int amr_nb_encode_init(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - s->frameCount=0; - - if(avctx->sample_rate!=8000) - { - av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n"); - return -1; - } - - if(avctx->channels!=1) - { - av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); - return -1; - } - - avctx->frame_size=160; - avctx->coded_frame= avcodec_alloc_frame(); - - s->enstate=Encoder_Interface_init(0); - if(!s->enstate) - { - av_log(avctx, AV_LOG_ERROR, "Encoder_Interface_init error\n"); - return -1; - } - - if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0) - { - av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported); - return -1; - } - - return 0; -} - -static int amr_nb_decode_close(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - Decoder_Interface_exit(s->decState); - return 0; -} - -static int amr_nb_encode_close(AVCodecContext * avctx) -{ - AMRContext *s = avctx->priv_data; - - Encoder_Interface_exit(s->enstate); - av_freep(&avctx->coded_frame); - return 0; -} - -static int amr_nb_decode_frame(AVCodecContext * avctx, - void *data, int *data_size, - uint8_t * buf, int buf_size) -{ - AMRContext *s = avctx->priv_data; - uint8_t*amrData=buf; - static short block_size[16]={ 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0 }; - enum Mode dec_mode; - int packet_size; - - /* av_log(NULL,AV_LOG_DEBUG,"amr_decode_frame buf=%p buf_size=%d frameCount=%d!!\n",buf,buf_size,s->frameCount); */ - - dec_mode = (buf[0] >> 3) & 0x000F; - packet_size = block_size[dec_mode]+1; - - if(packet_size > buf_size) { - av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size); - return -1; - } - - s->frameCount++; - /* av_log(NULL,AV_LOG_DEBUG,"packet_size=%d amrData= 0x%X %X %X %X\n",packet_size,amrData[0],amrData[1],amrData[2],amrData[3]); */ - /* call decoder */ - Decoder_Interface_Decode(s->decState, amrData, data, 0); - *data_size=160*2; - - return packet_size; -} - -static int amr_nb_encode_frame(AVCodecContext *avctx, - unsigned char *frame/*out*/, int buf_size, void *data/*in*/) -{ - AMRContext *s = avctx->priv_data; - int written; - - if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0) - { - av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported); - return -1; - } - - written = Encoder_Interface_Encode(s->enstate, - s->enc_bitrate, - data, - frame, - 0); - /* av_log(NULL,AV_LOG_DEBUG,"amr_nb_encode_frame encoded %u bytes, bitrate %u, first byte was %#02x\n",written, s->enc_bitrate, frame[0] ); */ - - return written; -} - -#endif - -#if defined(CONFIG_LIBAMR_NB) || defined(CONFIG_LIBAMR_NB_FIXED) - -AVCodec libamr_nb_decoder = -{ - "libamr_nb", - CODEC_TYPE_AUDIO, - CODEC_ID_AMR_NB, - sizeof(AMRContext), - amr_nb_decode_init, - NULL, - amr_nb_decode_close, - amr_nb_decode_frame, -}; - -AVCodec libamr_nb_encoder = -{ - "libamr_nb", - CODEC_TYPE_AUDIO, - CODEC_ID_AMR_NB, - sizeof(AMRContext), - amr_nb_encode_init, - amr_nb_encode_frame, - amr_nb_encode_close, - NULL, -}; - -#endif - -/* -----------AMR wideband ------------*/ -#ifdef CONFIG_LIBAMR_WB - -#ifdef _TYPEDEF_H -//To avoid duplicate typedefs from typdef in amr-nb -#define typedef_h -#endif - -#include <amrwb/enc_if.h> -#include <amrwb/dec_if.h> -#include <amrwb/if_rom.h> - -/* Common code for fixed and float version*/ -typedef struct AMRWB_bitrates -{ - int rate; - int mode; -} AMRWB_bitrates; - -static int getWBBitrateMode(int bitrate) -{ - /* make the correspondance between bitrate and mode */ - AMRWB_bitrates rates[]={ {6600,0}, - {8850,1}, - {12650,2}, - {14250,3}, - {15850,4}, - {18250,5}, - {19850,6}, - {23050,7}, - {23850,8}, - }; - int i; - - for(i=0;i<9;i++) - { - if(rates[i].rate==bitrate) - { - return(rates[i].mode); - } - } - /* no bitrate matching, return an error */ - return -1; -} - - -typedef struct AMRWBContext { - int frameCount; - void *state; - int mode; - Word16 allow_dtx; -} AMRWBContext; - -static int amr_wb_encode_init(AVCodecContext * avctx) -{ - AMRWBContext *s = avctx->priv_data; - - s->frameCount=0; - - if(avctx->sample_rate!=16000) - { - av_log(avctx, AV_LOG_ERROR, "Only 16000Hz sample rate supported\n"); - return -1; - } - - if(avctx->channels!=1) - { - av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); - return -1; - } - - if((s->mode=getWBBitrateMode(avctx->bit_rate))<0) - { - av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported); - return -1; - } - - avctx->frame_size=320; - avctx->coded_frame= avcodec_alloc_frame(); - - s->state = E_IF_init(); - s->allow_dtx=0; - - return 0; -} - -static int amr_wb_encode_close(AVCodecContext * avctx) -{ - AMRWBContext *s = avctx->priv_data; - - E_IF_exit(s->state); - av_freep(&avctx->coded_frame); - s->frameCount++; - return 0; -} - -static int amr_wb_encode_frame(AVCodecContext *avctx, - unsigned char *frame/*out*/, int buf_size, void *data/*in*/) -{ - AMRWBContext *s = avctx->priv_data; - int size; - - if((s->mode=getWBBitrateMode(avctx->bit_rate))<0) - { - av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported); - return -1; - } - size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx); - return size; -} - -static int amr_wb_decode_init(AVCodecContext * avctx) -{ - AMRWBContext *s = avctx->priv_data; - - s->frameCount=0; - s->state = D_IF_init(); - - amr_decode_fix_avctx(avctx); - - if(avctx->channels > 1) - { - av_log(avctx, AV_LOG_ERROR, "amr_wb: multichannel decoding not supported\n"); - return -1; - } - - return 0; -} - -static int amr_wb_decode_frame(AVCodecContext * avctx, - void *data, int *data_size, - uint8_t * buf, int buf_size) -{ - AMRWBContext *s = avctx->priv_data; - uint8_t*amrData=buf; - int mode; - int packet_size; - - if(buf_size==0) { - /* nothing to do */ - return 0; - } - - mode = (amrData[0] >> 3) & 0x000F; - packet_size = block_size[mode]; - - if(packet_size > buf_size) { - av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size+1); - return -1; - } - - s->frameCount++; - D_IF_decode( s->state, amrData, data, _good_frame); - *data_size=320*2; - return packet_size; -} - -static int amr_wb_decode_close(AVCodecContext * avctx) -{ - AMRWBContext *s = avctx->priv_data; - - D_IF_exit(s->state); - return 0; -} - -AVCodec libamr_wb_decoder = -{ - "libamr_wb", - CODEC_TYPE_AUDIO, - CODEC_ID_AMR_WB, - sizeof(AMRWBContext), - amr_wb_decode_init, - NULL, - amr_wb_decode_close, - amr_wb_decode_frame, -}; - -AVCodec libamr_wb_encoder = -{ - "libamr_wb", - CODEC_TYPE_AUDIO, - CODEC_ID_AMR_WB, - sizeof(AMRWBContext), - amr_wb_encode_init, - amr_wb_encode_frame, - amr_wb_encode_close, - NULL, -}; - -#endif //CONFIG_LIBAMR_WB |