virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

Drop unused libamr-nb fixed-point glue code.

Browse Source 
Originally committed as revision 18716 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun 2009-04-29 15:43:57 +00:00
parent 2f7ae63ba1
commit a068a7f1f0
1 changed files with 2 additions and 241 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

243
libavcodec/libamr.c
View File

@ -37,10 +37,6 @@
* 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
@ -52,10 +48,6 @@
* 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
@ -65,21 +57,8 @@
#include "avcodec.h"
#if 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";
@ -137,225 +116,7 @@ static void amr_decode_fix_avctx(AVCodecContext * avctx)
avctx->sample_fmt = SAMPLE_FMT_S16;
}
#if 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 av_cold 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 av_cold 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 av_cold 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 av_cold 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,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
AMRContext *s = avctx->priv_data;
const 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 CONFIG_LIBAMR_NB /* Float point version*/
#if CONFIG_LIBAMR_NB
typedef struct AMRContext {
int frameCount;
@ -496,7 +257,7 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
#endif
#if CONFIG_LIBAMR_NB || CONFIG_LIBAMR_NB_FIXED
#if CONFIG_LIBAMR_NB
AVCodec libamr_nb_decoder =
{