* AMR Audio decoder stub
* Copyright (c) 2003 the ffmpeg project
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
This code implements amr-nb and amr-wb audio encoder/decoder through external reference
atleast on a P4 1.5GHz (0.9s instead of 9.9s on a 30s audio clip at MR102).
Both float and fixed point is supported for amr-nb, but only float for
amr-wb.
-
+
--AMR-NB--
The fixed-point (TS26.073) can be downloaded from:
http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-510.zip
Extract the soure into ffmpeg/libavcodec/amr
To use the fixed version run "./configure" with "--enable-amr_nb-fixed"
-
+
The float version (default) can be downloaded from:
http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-510.zip
Extract the soure into ffmpeg/libavcodec/amr_float
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
-
+
--AMR-WB--
The reference code can be downloaded from:
http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-510.zip
It should be extracted to "libavcodec/amrwb_float". Enable it with
"--enable-amr_wb".
-
+
The specification for amr-wb can be downloaded from:
http://www.3gpp.org/ftp/Specs/archive/26_series/26.171/26171-500.zip
-
+
If someone want 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
-
+
*/
#include "avcodec.h"
-#ifdef AMR_NB_FIXED
+#ifdef CONFIG_AMR_NB_FIXED
#define MMS_IO
int startrate;
int stoprate;
enum Mode mode;
-
+
} AMR_bitrates;
/* Match desired bitrate with closest one*/
{7950,9999,MR795},//9
{10000,11999,MR102},//10
{12000,64000,MR122},//12
-
+
};
int i;
for(i=0;i<8;i++)
return(MR122);
}
-#ifdef AMR_NB_FIXED
+#ifdef CONFIG_AMR_NB_FIXED
/* fixed point version*/
/* frame size in serial bitstream file (frame type + serial stream + flags) */
#define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5)
Speech_Encode_FrameState *enstate;
sid_syncState *sidstate;
enum TXFrameType tx_frametype;
-
+
} AMRContext;
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");
s->mode= (enum Mode)0;
s->reset_flag=0;
s->reset_flag_old=1;
-
+
if(avctx->sample_rate!=8000)
{
if(avctx->debug)
int offset=0;
UWord8 toc, q, ft;
-
+
Word16 serial[SERIAL_FRAMESIZE]; /* coded bits */
Word16 *synth;
UWord8 *packed_bits;
//We have a new frame
s->frameCount++;
- if (s->rx_type == RX_NO_DATA)
+ 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)
{
}
}
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;
synth+=160;
-
+
/* if not homed: check whether current frame is a homing frame */
if (s->reset_flag_old == 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*/)
+ 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);
-
+
+ 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);
}
-#elif defined(AMR_NB) /* Float point version*/
+#elif defined(CONFIG_AMR_NB) /* Float point version*/
typedef struct AMRContext {
int frameCount;
{
AMRContext *s = avctx->priv_data;
s->frameCount=0;
-
+
if(avctx->sample_rate!=8000)
{
if(avctx->debug)
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); */
-
+
if(buf_size==0) {
/* nothing to do */
return 0;
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*/)
+ unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
{
AMRContext *s = (AMRContext*)avctx->priv_data;
int written;
- written = Encoder_Interface_Encode(s->enstate,
- s->enc_bitrate,
- data,
- frame,
+ 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] ); */
#endif
-#if defined(AMR_NB) || defined(AMR_NB_FIXED)
+#if defined(CONFIG_AMR_NB) || defined(CONFIG_AMR_NB_FIXED)
AVCodec amr_nb_decoder =
{
#endif
/* -----------AMR wideband ------------*/
-#ifdef AMR_WB
+#ifdef CONFIG_AMR_WB
#ifdef _TYPEDEF_H
//To avoid duplicate typedefs from typdef in amr-nb
int startrate;
int stoprate;
int mode;
-
+
} AMRWB_bitrates;
static int getWBBitrateMode(int bitrate)
{18001,22000,6},//19.85
{22001,23000,7},//23.05
{23001,24000,8},//23.85
-
+
};
int i;
{
AMRWBContext *s = (AMRWBContext*)avctx->priv_data;
s->frameCount=0;
-
+
if(avctx->sample_rate!=16000)
{
if(avctx->debug)
}
static int amr_wb_encode_frame(AVCodecContext *avctx,
- unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
+ unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
{
AMRWBContext *s = (AMRWBContext*) avctx->priv_data;
int size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx);
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;
NULL,
};
-#endif //AMR_WB
+#endif //CONFIG_AMR_WB
projects / ffmpeg / blobdiff