eden-emu/opus
19
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Adds a fuzzing mode that causes the encoder to make random decisions

Browse source
This commit is contained in:
Jean-Marc Valin 2011-08-11 16:21:58 -04:00
parent c2d86f0639
commit f334c82ec3
7 changed files with 70 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

21
src/opus_encoder.c
View file

@ -217,6 +217,12 @@ int opus_encode(OpusEncoder *st, const opus_int16 *pcm, int frame_size,
} else {
st->stream_channels = st->channels;
}
#ifdef FUZZING
if (st->channels == 2 && (rand()&0x1F)==0)
st->stream_channels = 3-st->stream_channels;
#endif
/* Equivalent bit-rate for mono */
mono_rate = st->bitrate_bps;
if (st->stream_channels==2)
@ -225,6 +231,20 @@ int opus_encode(OpusEncoder *st, const opus_int16 *pcm, int frame_size,
of 60 bits/frame */
mono_rate -= 60*(st->Fs/frame_size - 50);
#ifdef FUZZING
if ((rand()&0xF)==0)
{
if ((rand()&0x1)==0)
st->mode = MODE_CELT_ONLY;
else
st->mode = MODE_SILK_ONLY;
} else {
if (st->prev_mode==MODE_CELT_ONLY)
st->mode = MODE_CELT_ONLY;
else
st->mode = MODE_SILK_ONLY;
}
#else
/* Mode selection depending on application and signal type */
if (st->user_mode==OPUS_APPLICATION_VOIP)
{
@ -260,6 +280,7 @@ int opus_encode(OpusEncoder *st, const opus_int16 *pcm, int frame_size,
else
st->mode = MODE_SILK_ONLY;
}
#endif
/* Automatic (rate-dependent) bandwidth selection */
if (st->mode == MODE_CELT_ONLY || st->first || st->silk_mode.allowBandwidthSwitch)
{