ref: c94e4bb103e6a989bcd2677c9178ee6ef461912c
parent: 5626908ec3c96a79640b26bee42549c82eb26689
author: Jean-Marc Valin <[email protected]>
date: Sat Dec 7 22:31:50 EST 2013
Optimizes encoder NaN detection and clipping by only running them when needed NaN detection should now be able to catch values that would create NaNs further down.
--- a/celt/celt_encoder.c
+++ b/celt/celt_encoder.c
@@ -471,9 +471,8 @@
coef0 = coef[0];
m = *mem;
-#ifdef FIXED_POINT
- /* Fast path for fixed-point in the normal 48kHz case */
- if (coef[1] == 0 && upsample == 1)
+ /* Fast path for the normal 48kHz case and no clipping */
+ if (coef[1] == 0 && upsample == 1 && !clip)
{for (i=0;i<N;i++)
{@@ -486,7 +485,6 @@
*mem = m;
return;
}
-#endif
Nu = N/upsample;
if (upsample!=1)
@@ -495,19 +493,9 @@
inp[i] = 0;
}
for (i=0;i<Nu;i++)
- {- celt_sig x;
+ inp[i*upsample] = SCALEIN(pcmp[CC*i]);
- x = SCALEIN(pcmp[CC*i]);
#ifndef FIXED_POINT
- /* Replace NaNs with zeros */
- if (!(x==x))
- x = 0;
-#endif
- inp[i*upsample] = x;
- }
-
-#ifndef FIXED_POINT
if (clip)
{/* Clip input to avoid encoding non-portable files */
@@ -1490,8 +1478,12 @@
enc->nbits_total+=tell-ec_tell(enc);
}
c=0; do {+ int need_clip=0;
+#ifndef FIXED_POINT
+ need_clip = st->clip && sample_max>65536.f;
+#endif
celt_preemphasis(pcm+c, in+c*(N+st->overlap)+st->overlap, N, CC, st->upsample,
- mode->preemph, st->preemph_memE+c, st->clip);
+ mode->preemph, st->preemph_memE+c, need_clip);
} while (++c<CC);
--- a/src/opus_encoder.c
+++ b/src/opus_encoder.c
@@ -924,7 +924,8 @@
opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
- const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix)
+ const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
+ int analysis_channels, downmix_func downmix, int float_api)
{void *silk_enc;
CELTEncoder *celt_enc;
@@ -1377,7 +1378,7 @@
st->user_forced_mode = MODE_CELT_ONLY;
tmp_len = opus_encode_native(st, pcm+i*(st->channels*st->Fs/50), st->Fs/50,
tmp_data+i*bytes_per_frame, bytes_per_frame, lsb_depth,
- NULL, 0, c1, c2, analysis_channels, downmix);
+ NULL, 0, c1, c2, analysis_channels, downmix, float_api);
if (tmp_len<0)
{RESTORE_STACK;
@@ -1444,9 +1445,20 @@
} else {dc_reject(pcm, 3, &pcm_buf[total_buffer*st->channels], st->hp_mem, frame_size, st->channels, st->Fs);
}
+#ifndef FIXED_POINT
+ if (float_api)
+ {+ opus_val32 sum=0;
+ for (i=0;i<frame_size*st->channels;i++)
+ sum += pcm_buf[total_buffer*st->channels+i]*pcm_buf[total_buffer*st->channels+i];
+ /* This should filter out both NaNs and ridiculous signals that could
+ cause NaNs further down. */
+ if (!(sum < 1e9))
+ OPUS_CLEAR(&pcm_buf[total_buffer*st->channels], frame_size*st->channels);
+ }
+#endif
-
/* SILK processing */
HB_gain = Q15ONE;
if (st->mode != MODE_CELT_ONLY)
@@ -1955,7 +1967,8 @@
for (i=0;i<frame_size*st->channels;i++)
in[i] = FLOAT2INT16(pcm[i]);
- ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_float);
+ ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_float, 1);
RESTORE_STACK;
return ret;
}
@@ -1977,7 +1990,8 @@
, st->analysis.subframe_mem
#endif
);
- return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_int);
+ return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_int, 0);
}
#else
@@ -2002,7 +2016,8 @@
for (i=0;i<frame_size*st->channels;i++)
in[i] = (1.0f/32768)*pcm[i];
- ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_int);
+ ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_int, 0);
RESTORE_STACK;
return ret;
}
@@ -2019,7 +2034,7 @@
st->variable_duration, st->channels, st->Fs, st->bitrate_bps,
delay_compensation, downmix_float, st->analysis.subframe_mem);
return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 24,
- pcm, analysis_frame_size, 0, -2, st->channels, downmix_float);
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_float, 1);
}
#endif
--- a/src/opus_multistream_encoder.c
+++ b/src/opus_multistream_encoder.c
@@ -674,7 +674,8 @@
unsigned char *data,
opus_int32 max_data_bytes,
int lsb_depth,
- downmix_func downmix
+ downmix_func downmix,
+ int float_api
)
{opus_int32 Fs;
@@ -849,7 +850,7 @@
if (!vbr && s == st->layout.nb_streams-1)
opus_encoder_ctl(enc, OPUS_SET_BITRATE(curr_max*(8*Fs/frame_size)));
len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max, lsb_depth,
- pcm, analysis_frame_size, c1, c2, st->layout.nb_channels, downmix);
+ pcm, analysis_frame_size, c1, c2, st->layout.nb_channels, downmix, float_api);
if (len<0)
{RESTORE_STACK;
@@ -922,7 +923,7 @@
)
{return opus_multistream_encode_native(st, opus_copy_channel_in_short,
- pcm, frame_size, data, max_data_bytes, 16, downmix_int);
+ pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0);
}
#ifndef DISABLE_FLOAT_API
@@ -935,7 +936,7 @@
)
{return opus_multistream_encode_native(st, opus_copy_channel_in_float,
- pcm, frame_size, data, max_data_bytes, 16, downmix_float);
+ pcm, frame_size, data, max_data_bytes, 16, downmix_float, 1);
}
#endif
@@ -951,7 +952,7 @@
)
{return opus_multistream_encode_native(st, opus_copy_channel_in_float,
- pcm, frame_size, data, max_data_bytes, 24, downmix_float);
+ pcm, frame_size, data, max_data_bytes, 24, downmix_float, 1);
}
int opus_multistream_encode(
@@ -963,7 +964,7 @@
)
{return opus_multistream_encode_native(st, opus_copy_channel_in_short,
- pcm, frame_size, data, max_data_bytes, 16, downmix_int);
+ pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0);
}
#endif
--- a/src/opus_private.h
+++ b/src/opus_private.h
@@ -104,7 +104,8 @@
opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
- const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix);
+ const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
+ int analysis_channels, downmix_func downmix, int float_api);
int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len,
opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,