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author | Diego Biurrun <diego@biurrun.de> | 2005-12-17 18:14:38 +0000 |
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committer | Diego Biurrun <diego@biurrun.de> | 2005-12-17 18:14:38 +0000 |
commit | 115329f16062074e11ccf3b89ead6176606c9696 (patch) | |
tree | e98aa993905a702688bf821737ab9a443969fc28 /libavcodec/sonic.c | |
parent | d76319b1ab716320f6e6a4d690b85fe4504ebd5b (diff) | |
download | ffmpeg-streaming-115329f16062074e11ccf3b89ead6176606c9696.zip ffmpeg-streaming-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.c | 138 |
1 files changed, 69 insertions, 69 deletions
diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c index d9c05fa..2f083e2 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: |