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-rw-r--r--libavcodec/amr.c70
1 files changed, 35 insertions, 35 deletions
diff --git a/libavcodec/amr.c b/libavcodec/amr.c
index fccb69d009..94df27ddc6 100644
--- a/libavcodec/amr.c
+++ b/libavcodec/amr.c
@@ -24,13 +24,13 @@
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
@@ -38,19 +38,19 @@
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"
@@ -77,7 +77,7 @@ typedef struct AMR_bitrates
int startrate;
int stoprate;
enum Mode mode;
-
+
} AMR_bitrates;
/* Match desired bitrate with closest one*/
@@ -93,7 +93,7 @@ static enum Mode getBitrateMode(int bitrate)
{7950,9999,MR795},//9
{10000,11999,MR102},//10
{12000,64000,MR122},//12
-
+
};
int i;
for(i=0;i<8;i++)
@@ -124,7 +124,7 @@ typedef struct AMRContext {
Speech_Encode_FrameState *enstate;
sid_syncState *sidstate;
enum TXFrameType tx_frametype;
-
+
} AMRContext;
@@ -137,7 +137,7 @@ static int amr_nb_decode_init(AVCodecContext * avctx)
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");
@@ -155,7 +155,7 @@ static int amr_nb_encode_init(AVCodecContext * avctx)
s->mode= (enum Mode)0;
s->reset_flag=0;
s->reset_flag_old=1;
-
+
if(avctx->sample_rate!=8000)
{
if(avctx->debug)
@@ -217,7 +217,7 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
int offset=0;
UWord8 toc, q, ft;
-
+
Word16 serial[SERIAL_FRAMESIZE]; /* coded bits */
Word16 *synth;
UWord8 *packed_bits;
@@ -250,14 +250,14 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
//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)
{
@@ -273,7 +273,7 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
}
}
else
- {
+ {
/* decode frame */
Speech_Decode_Frame(s->speech_decoder_state, s->mode, &serial[1], s->rx_type, synth);
}
@@ -281,7 +281,7 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
//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)
{
@@ -294,7 +294,7 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
Speech_Decode_Frame_reset(s->speech_decoder_state);
}
s->reset_flag_old = s->reset_flag;
-
+
}
return offset;
}
@@ -307,16 +307,16 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
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);
@@ -352,7 +352,7 @@ static int amr_nb_encode_init(AVCodecContext * avctx)
{
AMRContext *s = avctx->priv_data;
s->frameCount=0;
-
+
if(avctx->sample_rate!=8000)
{
if(avctx->debug)
@@ -416,7 +416,7 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
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;
@@ -429,13 +429,13 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
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;
}
@@ -445,10 +445,10 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
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] ); */
@@ -502,7 +502,7 @@ typedef struct AMRWB_bitrates
int startrate;
int stoprate;
int mode;
-
+
} AMRWB_bitrates;
static int getWBBitrateMode(int bitrate)
@@ -518,7 +518,7 @@ static int getWBBitrateMode(int bitrate)
{18001,22000,6},//19.85
{22001,23000,7},//23.05
{23001,24000,8},//23.85
-
+
};
int i;
@@ -545,7 +545,7 @@ static int amr_wb_encode_init(AVCodecContext * avctx)
{
AMRWBContext *s = (AMRWBContext*)avctx->priv_data;
s->frameCount=0;
-
+
if(avctx->sample_rate!=16000)
{
if(avctx->debug)
@@ -623,7 +623,7 @@ static int amr_wb_decode_frame(AVCodecContext * avctx,
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;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 23:23:41 +0000