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authorDiego Biurrun <diego@biurrun.de>2005-12-17 18:14:38 +0000
committerDiego Biurrun <diego@biurrun.de>2005-12-17 18:14:38 +0000
commit115329f16062074e11ccf3b89ead6176606c9696 (patch)
treee98aa993905a702688bf821737ab9a443969fc28 /libavcodec/sonic.c
parentd76319b1ab716320f6e6a4d690b85fe4504ebd5b (diff)
downloadffmpeg-115329f16062074e11ccf3b89ead6176606c9696.tar.gz
COSMETICS: Remove all trailing whitespace.
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/sonic.c')
-rw-r--r--libavcodec/sonic.c138
1 files changed, 69 insertions, 69 deletions
diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c
index d9c05faecd..2f083e28a5 100644
--- a/libavcodec/sonic.c
+++ b/libavcodec/sonic.c
@@ -43,10 +43,10 @@
typedef struct SonicContext {
int lossless, decorrelation;
-
+
int num_taps, downsampling;
double quantization;
-
+
int channels, samplerate, block_align, frame_size;
int *tap_quant;
@@ -104,7 +104,7 @@ static inline int intlist_write(PutBitContext *pb, int *buf, int entries, int ba
static inline int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_part)
{
int i;
-
+
for (i = 0; i < entries; i++)
buf[i] = get_se_golomb(gb);
@@ -118,7 +118,7 @@ static inline int intlist_read(GetBitContext *gb, int *buf, int entries, int bas
static int bits_to_store(uint64_t x)
{
int res = 0;
-
+
while(x)
{
res++;
@@ -146,7 +146,7 @@ static void write_uint_max(PutBitContext *pb, unsigned int value, unsigned int m
static unsigned int read_uint_max(GetBitContext *gb, int max)
{
int i, bits, value = 0;
-
+
if (!max)
return 0;
@@ -172,21 +172,21 @@ static int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_pa
copy = av_mallocz(4* entries);
if (!copy)
return -1;
-
+
if (base_2_part)
{
int energy = 0;
-
+
for (i = 0; i < entries; i++)
energy += abs(buf[i]);
-
+
low_bits = bits_to_store(energy / (entries * 2));
if (low_bits > 15)
low_bits = 15;
-
+
put_bits(pb, 4, low_bits);
}
-
+
for (i = 0; i < entries; i++)
{
put_bits(pb, low_bits, abs(buf[i]));
@@ -201,7 +201,7 @@ static int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_pa
// av_free(copy);
return -1;
}
-
+
for (i = 0; i <= max; i++)
{
for (j = 0; j < entries; j++)
@@ -213,16 +213,16 @@ static int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_pa
while (pos < x)
{
int steplet = step >> 8;
-
+
if (pos + steplet > x)
steplet = x - pos;
-
+
for (i = 0; i < steplet; i++)
if (bits[i+pos] != dominant)
any = 1;
-
+
put_bits(pb, 1, any);
-
+
if (!any)
{
pos += steplet;
@@ -231,24 +231,24 @@ static int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_pa
else
{
int interloper = 0;
-
+
while (((pos + interloper) < x) && (bits[pos + interloper] == dominant))
interloper++;
// note change
- write_uint_max(pb, interloper, (step >> 8) - 1);
-
+ write_uint_max(pb, interloper, (step >> 8) - 1);
+
pos += interloper + 1;
step -= step / ADAPT_LEVEL;
}
-
+
if (step < 256)
{
step = 65536 / step;
dominant = !dominant;
}
}
-
+
// store signs
for (i = 0; i < entries; i++)
if (buf[i])
@@ -269,7 +269,7 @@ static int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_par
if (!bits)
return -1;
-
+
if (base_2_part)
{
low_bits = get_bits(gb, 4);
@@ -284,43 +284,43 @@ static int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_par
while (n_zeros < entries)
{
int steplet = step >> 8;
-
+
if (!get_bits1(gb))
{
for (i = 0; i < steplet; i++)
bits[x++] = dominant;
-
+
if (!dominant)
n_zeros += steplet;
-
+
step += step / ADAPT_LEVEL;
}
else
{
int actual_run = read_uint_max(gb, steplet-1);
-
+
// av_log(NULL, AV_LOG_INFO, "actual run: %d\n", actual_run);
-
+
for (i = 0; i < actual_run; i++)
bits[x++] = dominant;
-
+
bits[x++] = !dominant;
-
+
if (!dominant)
n_zeros += actual_run;
else
n_zeros++;
-
+
step -= step / ADAPT_LEVEL;
}
-
+
if (step < 256)
{
step = 65536 / step;
dominant = !dominant;
}
}
-
+
// reconstruct unsigned values
n_zeros = 0;
for (i = 0; n_zeros < entries; i++)
@@ -332,22 +332,22 @@ static int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_par
pos = 0;
level += 1 << low_bits;
}
-
+
if (buf[pos] >= level)
break;
-
+
pos++;
}
-
+
if (bits[i])
buf[pos] += 1 << low_bits;
else
n_zeros++;
-
+
pos++;
}
// av_free(bits);
-
+
// read signs
for (i = 0; i < entries; i++)
if (buf[i] && get_bits1(gb))
@@ -397,7 +397,7 @@ static int predictor_calc_error(int *k, int *state, int order, int error)
}
#endif
- // don't drift too far, to avoid overflows
+ // don't drift too far, to avoid overflows
if (x > (SAMPLE_FACTOR<<16)) x = (SAMPLE_FACTOR<<16);
if (x < -(SAMPLE_FACTOR<<16)) x = -(SAMPLE_FACTOR<<16);
@@ -415,9 +415,9 @@ static void modified_levinson_durbin(int *window, int window_entries,
{
int i;
int *state = av_mallocz(4* window_entries);
-
+
memcpy(state, window, 4* window_entries);
-
+
for (i = 0; i < out_entries; i++)
{
int step = (i+1)*channels, k, j;
@@ -445,12 +445,12 @@ static void modified_levinson_durbin(int *window, int window_entries,
k = 0;
else
k = (int)(floor(-xy/xx * (double)LATTICE_FACTOR / (double)(tap_quant[i]) + 0.5));
-
+
if (k > (LATTICE_FACTOR/tap_quant[i]))
k = LATTICE_FACTOR/tap_quant[i];
if (-k > (LATTICE_FACTOR/tap_quant[i]))
k = -(LATTICE_FACTOR/tap_quant[i]);
-
+
out[i] = k;
k *= tap_quant[i];
@@ -464,7 +464,7 @@ static void modified_levinson_durbin(int *window, int window_entries,
*x_ptr = x_value + shift_down(k*state_value,LATTICE_SHIFT);
*state_ptr = state_value + shift_down(k*x_value, LATTICE_SHIFT);
}
-#else
+#else
for (j=0; j <= (window_entries - step); j++)
{
int stepval = window[step+j], stateval=state[j];
@@ -473,7 +473,7 @@ static void modified_levinson_durbin(int *window, int window_entries,
}
#endif
}
-
+
av_free(state);
}
@@ -562,7 +562,7 @@ static int sonic_encode_init(AVCodecContext *avctx)
if (!s->coded_samples[i])
return -1;
}
-
+
s->int_samples = av_mallocz(4* s->frame_size);
s->window_size = ((2*s->tail_size)+s->frame_size);
@@ -661,13 +661,13 @@ static int sonic_encode_frame(AVCodecContext *avctx,
}
memset(s->window, 0, 4* s->window_size);
-
+
for (i = 0; i < s->tail_size; i++)
s->window[x++] = s->tail[i];
for (i = 0; i < s->frame_size; i++)
s->window[x++] = s->int_samples[i];
-
+
for (i = 0; i < s->tail_size; i++)
s->window[x++] = 0;
@@ -691,8 +691,8 @@ static int sonic_encode_frame(AVCodecContext *avctx,
s->coded_samples[ch][i] = sum;
}
}
-
- // simple rate control code
+
+ // simple rate control code
if (!s->lossless)
{
double energy1 = 0.0, energy2 = 0.0;
@@ -705,16 +705,16 @@ static int sonic_encode_frame(AVCodecContext *avctx,
energy1 += fabs(sample);
}
}
-
+
energy2 = sqrt(energy2/(s->channels*s->block_align));
energy1 = sqrt(2.0)*energy1/(s->channels*s->block_align);
-
+
// increase bitrate when samples are like a gaussian distribution
// reduce bitrate when samples are like a two-tailed exponential distribution
-
+
if (energy2 > energy1)
energy2 += (energy2-energy1)*RATE_VARIATION;
-
+
quant = (int)(BASE_QUANT*s->quantization*energy2/SAMPLE_FACTOR);
// av_log(avctx, AV_LOG_DEBUG, "quant: %d energy: %f / %f\n", quant, energy1, energy2);
@@ -722,9 +722,9 @@ static int sonic_encode_frame(AVCodecContext *avctx,
quant = 1;
if (quant > 65535)
quant = 65535;
-
+
set_ue_golomb(&pb, quant);
-
+
quant *= SAMPLE_FACTOR;
}
@@ -751,18 +751,18 @@ static int sonic_decode_init(AVCodecContext *avctx)
SonicContext *s = avctx->priv_data;
GetBitContext gb;
int i, version;
-
+
s->channels = avctx->channels;
s->samplerate = avctx->sample_rate;
-
+
if (!avctx->extradata)
{
av_log(avctx, AV_LOG_ERROR, "No mandatory headers present\n");
return -1;
}
-
+
init_get_bits(&gb, avctx->extradata, avctx->extradata_size);
-
+
version = get_bits(&gb, 2);
if (version > 1)
{
@@ -793,7 +793,7 @@ static int sonic_decode_init(AVCodecContext *avctx)
s->num_taps = (get_bits(&gb, 5)+1)<<5;
if (get_bits1(&gb)) // XXX FIXME
av_log(avctx, AV_LOG_INFO, "Custom quant table\n");
-
+
s->block_align = (int)(2048.0*(s->samplerate/44100))/s->downsampling;
s->frame_size = s->channels*s->block_align*s->downsampling;
// avctx->frame_size = s->block_align;
@@ -805,9 +805,9 @@ static int sonic_decode_init(AVCodecContext *avctx)
s->tap_quant = av_mallocz(4* s->num_taps);
for (i = 0; i < s->num_taps; i++)
s->tap_quant[i] = (int)(sqrt(i+1));
-
+
s->predictor_k = av_mallocz(4* s->num_taps);
-
+
for (i = 0; i < s->channels; i++)
{
s->predictor_state[i] = av_mallocz(4* s->num_taps);
@@ -830,17 +830,17 @@ static int sonic_decode_close(AVCodecContext *avctx)
{
SonicContext *s = avctx->priv_data;
int i;
-
+
av_free(s->int_samples);
av_free(s->tap_quant);
av_free(s->predictor_k);
-
+
for (i = 0; i < s->channels; i++)
{
av_free(s->predictor_state[i]);
av_free(s->coded_samples[i]);
}
-
+
return 0;
}
@@ -856,9 +856,9 @@ static int sonic_decode_frame(AVCodecContext *avctx,
if (buf_size == 0) return 0;
// av_log(NULL, AV_LOG_INFO, "buf_size: %d\n", buf_size);
-
+
init_get_bits(&gb, buf, buf_size*8);
-
+
intlist_read(&gb, s->predictor_k, s->num_taps, 0);
// dequantize
@@ -877,7 +877,7 @@ static int sonic_decode_frame(AVCodecContext *avctx,
int x = ch;
predictor_init_state(s->predictor_k, s->predictor_state[ch], s->num_taps);
-
+
intlist_read(&gb, s->coded_samples[ch], s->block_align, 1);
for (i = 0; i < s->block_align; i++)
@@ -887,7 +887,7 @@ static int sonic_decode_frame(AVCodecContext *avctx,
s->int_samples[x] = predictor_calc_error(s->predictor_k, s->predictor_state[ch], s->num_taps, 0);
x += s->channels;
}
-
+
s->int_samples[x] = predictor_calc_error(s->predictor_k, s->predictor_state[ch], s->num_taps, s->coded_samples[ch][i] * quant);
x += s->channels;
}
@@ -895,7 +895,7 @@ static int sonic_decode_frame(AVCodecContext *avctx,
for (i = 0; i < s->num_taps; i++)
s->predictor_state[ch][i] = s->int_samples[s->frame_size - s->channels + ch - i*s->channels];
}
-
+
switch(s->decorrelation)
{
case MID_SIDE: