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opus/src/test_opus.c
Jean-Marc Valin 294bfec27b Implements hard CBR for SILK 
This is achieved by running the encoding process in a loop and
padding when we don't reach the exact rate. It also implements
VBR-with-cap, which means we no longer need to artificially decrease
the SILK bandwidth when it's close to the cap.
2011-10-20 00:39:41 -04:00

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "opus.h"
#include "debug.h"
#include "opus_types.h"
#define MAX_PACKET 1500
void print_usage( char* argv[] )
{
fprintf(stderr, "Usage: %s [-e] <application> <sampling rate (Hz)> <channels (1/2)> "
"<bits per second> [options] <input> <output>\n", argv[0]);
fprintf(stderr, " %s -d <sampling rate (Hz)> <channels (1/2)> "
"[options] <input> <output>\n\n", argv[0]);
fprintf(stderr, "mode: voip | audio | restricted-lowdelay\n" );
fprintf(stderr, "options:\n" );
fprintf(stderr, "-e : only runs the encoder (output the bit-stream)\n" );
fprintf(stderr, "-d : only runs the decoder (reads the bit-stream as input)\n" );
fprintf(stderr, "-cbr : enable constant bitrate; default: variable bitrate\n" );
fprintf(stderr, "-cvbr : enable constrained variable bitrate; default: unconstrained\n" );
fprintf(stderr, "-bandwidth <NB|MB|WB|SWB|FB> : audio bandwidth (from narrowband to fullband); default: sampling rate\n" );
fprintf(stderr, "-framesize <2.5|5|10|20|40|60> : frame size in ms; default: 20 \n" );
fprintf(stderr, "-max_payload <bytes> : maximum payload size in bytes, default: 1024\n" );
fprintf(stderr, "-complexity <comp> : complexity, 0 (lowest) ... 10 (highest); default: 10\n" );
fprintf(stderr, "-inbandfec : enable SILK inband FEC\n" );
fprintf(stderr, "-forcemono : force mono encoding, even for stereo input\n" );
fprintf(stderr, "-dtx : enable SILK DTX\n" );
fprintf(stderr, "-loss <perc> : simulate packet loss, in percent (0-100); default: 0\n" );
}
#ifdef _WIN32
# define STR_CASEINSENSITIVE_COMPARE(x, y) _stricmp(x, y)
#else
# include <strings.h>
# define STR_CASEINSENSITIVE_COMPARE(x, y) strcasecmp(x, y)
#endif
static void int_to_char(opus_uint32 i, unsigned char ch[4])
{
ch[0] = i>>24;
ch[1] = (i>>16)&0xFF;
ch[2] = (i>>8)&0xFF;
ch[3] = i&0xFF;
}
static opus_uint32 char_to_int(unsigned char ch[4])
{
return ((opus_uint32)ch[0]<<24) | ((opus_uint32)ch[1]<<16)
| ((opus_uint32)ch[2]<< 8) | (opus_uint32)ch[3];
}
int main(int argc, char *argv[])
{
int err;
char *inFile, *outFile;
FILE *fin, *fout;
OpusEncoder *enc=NULL;
OpusDecoder *dec=NULL;
int args;
int len[2];
int frame_size, channels;
opus_int32 bitrate_bps=0;
unsigned char *data[2];
opus_int32 sampling_rate;
int use_vbr;
int max_payload_bytes;
int complexity;
int use_inbandfec;
int use_dtx;
int forcechannels;
int cvbr = 0;
int packet_loss_perc;
opus_int32 count=0, count_act=0;
int k;
int skip=0;
int stop=0;
short *in, *out;
int application=OPUS_APPLICATION_AUDIO;
double bits=0.0, bits_max=0.0, bits_act=0.0, bits2=0.0, nrg;
int bandwidth=-1;
const char *bandwidth_string;
int lost = 0, lost_prev = 1;
int toggle = 0;
opus_uint32 enc_final_range[2];
opus_uint32 dec_final_range;
int encode_only=0, decode_only=0;
int max_frame_size = 960*6;
int curr_read=0;
int sweep_bps = 0;
if (argc < 5 )
{
print_usage( argv );
return 1;
}
fprintf(stderr, "%s\n", opus_get_version_string());
args = 1;
if (strcmp(argv[args], "-e")==0)
{
encode_only = 1;
args++;
} else if (strcmp(argv[args], "-d")==0)
{
decode_only = 1;
args++;
}
if (!decode_only && argc < 7 )
{
print_usage( argv );
return 1;
}
if (!decode_only)
{
if (strcmp(argv[args], "voip")==0)
application = OPUS_APPLICATION_VOIP;
else if (strcmp(argv[args], "restricted-lowdelay")==0)
application = OPUS_APPLICATION_RESTRICTED_LOWDELAY;
else if (strcmp(argv[args], "audio")!=0) {
fprintf(stderr, "unknown application: %s\n", argv[args]);
print_usage(argv);
return 1;
}
args++;
}
sampling_rate = (opus_int32)atol(argv[args]);
args++;
channels = atoi(argv[args]);
args++;
if (!decode_only)
{
bitrate_bps = (opus_int32)atol(argv[args]);
args++;
}
if (sampling_rate != 8000 && sampling_rate != 12000 && sampling_rate != 16000
&& sampling_rate != 24000 && sampling_rate != 48000)
{
fprintf(stderr, "Supported sampling rates are 8000, 12000, 16000, "
"24000 and 48000.\n");
return 1;
}
frame_size = sampling_rate/50;
/* defaults: */
use_vbr = 1;
bandwidth = OPUS_AUTO;
max_payload_bytes = MAX_PACKET;
complexity = 10;
use_inbandfec = 0;
forcechannels = OPUS_AUTO;
use_dtx = 0;
packet_loss_perc = 0;
max_frame_size = 960*6;
curr_read=0;
while( args < argc - 2 ) {
/* process command line options */
if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-cbr" ) == 0 ) {
use_vbr = 0;
args++;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-bandwidth" ) == 0 ) {
if (strcmp(argv[ args + 1 ], "NB")==0)
bandwidth = OPUS_BANDWIDTH_NARROWBAND;
else if (strcmp(argv[ args + 1 ], "MB")==0)
bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
else if (strcmp(argv[ args + 1 ], "WB")==0)
bandwidth = OPUS_BANDWIDTH_WIDEBAND;
else if (strcmp(argv[ args + 1 ], "SWB")==0)
bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
else if (strcmp(argv[ args + 1 ], "FB")==0)
bandwidth = OPUS_BANDWIDTH_FULLBAND;
else {
fprintf(stderr, "Unknown bandwidth %s. Supported are NB, MB, WB, SWB, FB.\n", argv[ args + 1 ]);
return 1;
}
args += 2;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-framesize" ) == 0 ) {
if (strcmp(argv[ args + 1 ], "2.5")==0)
frame_size = sampling_rate/400;
else if (strcmp(argv[ args + 1 ], "5")==0)
frame_size = sampling_rate/200;
else if (strcmp(argv[ args + 1 ], "10")==0)
frame_size = sampling_rate/100;
else if (strcmp(argv[ args + 1 ], "20")==0)
frame_size = sampling_rate/50;
else if (strcmp(argv[ args + 1 ], "40")==0)
frame_size = sampling_rate/25;
else if (strcmp(argv[ args + 1 ], "60")==0)
frame_size = 3*sampling_rate/50;
else {
fprintf(stderr, "Unsupported frame size: %s ms. Supported are 2.5, 5, 10, 20, 40, 60.\n", argv[ args + 1 ]);
return 1;
}
args += 2;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-max_payload" ) == 0 ) {
max_payload_bytes = atoi( argv[ args + 1 ] );
args += 2;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-complexity" ) == 0 ) {
complexity = atoi( argv[ args + 1 ] );
args += 2;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-inbandfec" ) == 0 ) {
use_inbandfec = 1;
args++;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-forcemono" ) == 0 ) {
forcechannels = 1;
args++;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-cvbr" ) == 0 ) {
cvbr = 1;
args++;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-dtx") == 0 ) {
use_dtx = 1;
args++;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-loss" ) == 0 ) {
packet_loss_perc = atoi( argv[ args + 1 ] );
args += 2;
} else if( STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-sweep" ) == 0 ) {
sweep_bps = atoi( argv[ args + 1 ] );
args += 2;
} else {
printf( "Error: unrecognized setting: %s\n\n", argv[ args ] );
print_usage( argv );
return 1;
}
}
if (max_payload_bytes < 0 || max_payload_bytes > MAX_PACKET)
{
fprintf (stderr, "max_payload_bytes must be between 0 and %d\n",
MAX_PACKET);
return 1;
}
inFile = argv[argc-2];
fin = fopen(inFile, "rb");
if (!fin)
{
fprintf (stderr, "Could not open input file %s\n", argv[argc-2]);
return 1;
}
outFile = argv[argc-1];
fout = fopen(outFile, "wb+");
if (!fout)
{
fprintf (stderr, "Could not open output file %s\n", argv[argc-1]);
return 1;
}
if (!decode_only)
{
enc = opus_encoder_create(sampling_rate, channels, application, &err);
if (err != OPUS_OK)
{
fprintf(stderr, "Cannot create encoder: %s\n", opus_strerror(err));
return 1;
}
opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate_bps));
opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(bandwidth));
opus_encoder_ctl(enc, OPUS_SET_VBR(use_vbr));
opus_encoder_ctl(enc, OPUS_SET_VBR_CONSTRAINT(cvbr));
opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(complexity));
opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(use_inbandfec));
opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(forcechannels));
opus_encoder_ctl(enc, OPUS_SET_DTX(use_dtx));
opus_encoder_ctl(enc, OPUS_SET_PACKET_LOSS_PERC(packet_loss_perc));
opus_encoder_ctl(enc, OPUS_GET_LOOKAHEAD(&skip));
}
if (!encode_only)
{
dec = opus_decoder_create(sampling_rate, channels, &err);
if (err != OPUS_OK)
{
fprintf(stderr, "Cannot create decoder: %s\n", opus_strerror(err));
return 1;
}
}
switch(bandwidth)
{
case OPUS_BANDWIDTH_NARROWBAND:
bandwidth_string = "narrowband";
break;
case OPUS_BANDWIDTH_MEDIUMBAND:
bandwidth_string = "mediumband";
break;
case OPUS_BANDWIDTH_WIDEBAND:
bandwidth_string = "wideband";
break;
case OPUS_BANDWIDTH_SUPERWIDEBAND:
bandwidth_string = "superwideband";
break;
case OPUS_BANDWIDTH_FULLBAND:
bandwidth_string = "fullband";
break;
case OPUS_AUTO:
bandwidth_string = "auto";
break;
default:
bandwidth_string = "unknown";
break;
}
if (decode_only)
fprintf(stderr, "Decoding with %ld Hz output (%d channels)\n", (long)sampling_rate, channels);
else
fprintf(stderr, "Encoding %ld Hz input at %.3f kb/s in %s mode with %d-sample frames.\n", (long)sampling_rate, bitrate_bps*0.001, bandwidth_string, frame_size);
in = (short*)malloc(frame_size*channels*sizeof(short));
out = (short*)malloc(max_frame_size*channels*sizeof(short));
data[0] = (unsigned char*)calloc(max_payload_bytes,sizeof(char));
if ( use_inbandfec ) {
data[1] = (unsigned char*)calloc(max_payload_bytes,sizeof(char));
}
while (!stop)
{
if (decode_only)
{
unsigned char ch[4];
err = fread(ch, 1, 4, fin);
if (feof(fin))
break;
len[toggle] = char_to_int(ch);
if (len[toggle]>max_payload_bytes || len[toggle]<0)
{
fprintf(stderr, "Invalid payload length: %d\n",len[toggle]);
break;
}
err = fread(ch, 1, 4, fin);
enc_final_range[toggle] = char_to_int(ch);
err = fread(data[toggle], 1, len[toggle], fin);
if (err<len[toggle])
{
fprintf(stderr, "Ran out of input, expecting %d bytes got %d\n",len[toggle],err);
break;
}
} else {
err = fread(in, sizeof(short)*channels, frame_size, fin);
curr_read = err;
if (curr_read < frame_size)
{
int i;
for (i=curr_read*channels;i<frame_size*channels;i++)
in[i] = 0;
stop = 1;
}
len[toggle] = opus_encode(enc, in, frame_size, data[toggle], max_payload_bytes);
if (sweep_bps!=0)
{
bitrate_bps += sweep_bps;
/* safety */
if (bitrate_bps<1000)
bitrate_bps = 1000;
opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate_bps));
}
opus_encoder_ctl(enc, OPUS_GET_FINAL_RANGE(&enc_final_range[toggle]));
if (len[toggle] < 0)
{
fprintf (stderr, "opus_encode() returned %d\n", len[toggle]);
return 1;
}
}
if (encode_only)
{
unsigned char int_field[4];
int_to_char(len[toggle], int_field);
fwrite(int_field, 1, 4, fout);
int_to_char(enc_final_range[toggle], int_field);
fwrite(int_field, 1, 4, fout);
fwrite(data[toggle], 1, len[toggle], fout);
} else {
int output_samples;
lost = len[toggle]==0 || (packet_loss_perc>0 && rand()%100 < packet_loss_perc);
if( count >= use_inbandfec ) {
/* delay by one packet when using in-band FEC */
if( use_inbandfec ) {
if( lost_prev ) {
/* attempt to decode with in-band FEC from next packet */
output_samples = opus_decode(dec, lost ? NULL : data[toggle], len[toggle], out, max_frame_size, 1);
} else {
/* regular decode */
output_samples = opus_decode(dec, data[1-toggle], len[1-toggle], out, max_frame_size, 0);
}
} else {
output_samples = opus_decode(dec, lost ? NULL : data[toggle], len[toggle], out, max_frame_size, 0);
}
if (output_samples>0)
{
fwrite(out+skip*channels, sizeof(short)*channels, output_samples-skip, fout);
skip = 0;
} else {
fprintf(stderr, "error decoding frame: %s\n", opus_strerror(output_samples));
}
}
}
if (!encode_only)
opus_decoder_ctl(dec, OPUS_GET_FINAL_RANGE(&dec_final_range));
/* compare final range encoder rng values of encoder and decoder */
if( enc_final_range[toggle^use_inbandfec]!=0 && !encode_only && !lost && !lost_prev &&
dec_final_range != enc_final_range[toggle^use_inbandfec] ) {
fprintf (stderr, "Error: Range coder state mismatch between encoder and decoder in frame %ld: 0x%8lx vs 0x%8lx\n", (long)count, (unsigned long)enc_final_range[toggle^use_inbandfec], (unsigned long)dec_final_range);
return 0;
}
lost_prev = lost;
/* count bits */
bits += len[toggle]*8;
bits_max = ( len[toggle]*8 > bits_max ) ? len[toggle]*8 : bits_max;
if( count >= use_inbandfec ) {
nrg = 0.0;
if (!decode_only)
{
for ( k = 0; k < frame_size * channels; k++ ) {
nrg += in[ k ] * (double)in[ k ];
}
}
if ( ( nrg / ( frame_size * channels ) ) > 1e5 ) {
bits_act += len[toggle]*8;
count_act++;
}
/* Variance */
bits2 += len[toggle]*len[toggle]*64;
}
count++;
toggle = (toggle + use_inbandfec) & 1;
}
fprintf (stderr, "average bitrate: %7.3f kb/s\n", 1e-3*bits*sampling_rate/(frame_size*(double)count));
fprintf (stderr, "maximum bitrate: %7.3f bkp/s\n", 1e-3*bits_max*sampling_rate/frame_size);
if (!decode_only)
fprintf (stderr, "active bitrate: %7.3f kb/s\n", 1e-3*bits_act*sampling_rate/(frame_size*(double)count_act));
fprintf (stderr, "bitrate standard deviation: %7.3f kb/s\n", 1e-3*sqrt(bits2/count - bits*bits/(count*(double)count))*sampling_rate/frame_size);
/* Close any files to which intermediate results were stored */
SILK_DEBUG_STORE_CLOSE_FILES
silk_TimerSave("opus_timing.txt");
opus_encoder_destroy(enc);
opus_decoder_destroy(dec);
free(data[0]);
if (use_inbandfec)
free(data[1]);
fclose(fin);
fclose(fout);
free(in);
free(out);
return 0;
}
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