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-rw-r--r--3rdparty/libflac/src/flac/analyze.c247
1 files changed, 0 insertions, 247 deletions
diff --git a/3rdparty/libflac/src/flac/analyze.c b/3rdparty/libflac/src/flac/analyze.c
deleted file mode 100644
index 47a5e76d7a9..00000000000
--- a/3rdparty/libflac/src/flac/analyze.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/* flac - Command-line FLAC encoder/decoder
- * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <errno.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "FLAC/all.h"
-#include "analyze.h"
-
-typedef struct {
- FLAC__int32 residual;
- unsigned count;
-} pair_t;
-
-typedef struct {
- pair_t buckets[FLAC__MAX_BLOCK_SIZE];
- int peak_index;
- unsigned nbuckets;
- unsigned nsamples;
- double sum, sos;
- double variance;
- double mean;
- double stddev;
-} subframe_stats_t;
-
-static subframe_stats_t all_;
-
-static void init_stats(subframe_stats_t *stats);
-static void update_stats(subframe_stats_t *stats, FLAC__int32 residual, unsigned incr);
-static void compute_stats(subframe_stats_t *stats);
-static FLAC__bool dump_stats(const subframe_stats_t *stats, const char *filename);
-
-void flac__analyze_init(analysis_options aopts)
-{
- if(aopts.do_residual_gnuplot) {
- init_stats(&all_);
- }
-}
-
-void flac__analyze_frame(const FLAC__Frame *frame, unsigned frame_number, FLAC__uint64 frame_offset, unsigned frame_bytes, analysis_options aopts, FILE *fout)
-{
- const unsigned channels = frame->header.channels;
- char outfilename[1024];
- subframe_stats_t stats;
- unsigned i, channel, partitions;
-
- /* do the human-readable part first */
-#ifdef _MSC_VER
- fprintf(fout, "frame=%u\toffset=%I64u\tbits=%u\tblocksize=%u\tsample_rate=%u\tchannels=%u\tchannel_assignment=%s\n", frame_number, frame_offset, frame_bytes*8, frame->header.blocksize, frame->header.sample_rate, channels, FLAC__ChannelAssignmentString[frame->header.channel_assignment]);
-#else
- fprintf(fout, "frame=%u\toffset=%llu\tbits=%u\tblocksize=%u\tsample_rate=%u\tchannels=%u\tchannel_assignment=%s\n", frame_number, (unsigned long long)frame_offset, frame_bytes*8, frame->header.blocksize, frame->header.sample_rate, channels, FLAC__ChannelAssignmentString[frame->header.channel_assignment]);
-#endif
- for(channel = 0; channel < channels; channel++) {
- const FLAC__Subframe *subframe = frame->subframes+channel;
- const FLAC__bool is_rice2 = subframe->data.fixed.entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2;
- const unsigned pesc = is_rice2? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
- fprintf(fout, "\tsubframe=%u\twasted_bits=%u\ttype=%s", channel, subframe->wasted_bits, FLAC__SubframeTypeString[subframe->type]);
- switch(subframe->type) {
- case FLAC__SUBFRAME_TYPE_CONSTANT:
- fprintf(fout, "\tvalue=%d\n", subframe->data.constant.value);
- break;
- case FLAC__SUBFRAME_TYPE_FIXED:
- FLAC__ASSERT(subframe->data.fixed.entropy_coding_method.type <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2);
- fprintf(fout, "\torder=%u\tresidual_type=%s\tpartition_order=%u\n", subframe->data.fixed.order, is_rice2? "RICE2":"RICE", subframe->data.fixed.entropy_coding_method.data.partitioned_rice.order);
- for(i = 0; i < subframe->data.fixed.order; i++)
- fprintf(fout, "\t\twarmup[%u]=%d\n", i, subframe->data.fixed.warmup[i]);
- partitions = (1u << subframe->data.fixed.entropy_coding_method.data.partitioned_rice.order);
- for(i = 0; i < partitions; i++) {
- unsigned parameter = subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents->parameters[i];
- if(parameter == pesc)
- fprintf(fout, "\t\tparameter[%u]=ESCAPE, raw_bits=%u\n", i, subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents->raw_bits[i]);
- else
- fprintf(fout, "\t\tparameter[%u]=%u\n", i, parameter);
- }
- if(aopts.do_residual_text) {
- for(i = 0; i < frame->header.blocksize-subframe->data.fixed.order; i++)
- fprintf(fout, "\t\tresidual[%u]=%d\n", i, subframe->data.fixed.residual[i]);
- }
- break;
- case FLAC__SUBFRAME_TYPE_LPC:
- FLAC__ASSERT(subframe->data.lpc.entropy_coding_method.type <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2);
- fprintf(fout, "\torder=%u\tqlp_coeff_precision=%u\tquantization_level=%d\tresidual_type=%s\tpartition_order=%u\n", subframe->data.lpc.order, subframe->data.lpc.qlp_coeff_precision, subframe->data.lpc.quantization_level, is_rice2? "RICE2":"RICE", subframe->data.lpc.entropy_coding_method.data.partitioned_rice.order);
- for(i = 0; i < subframe->data.lpc.order; i++)
- fprintf(fout, "\t\tqlp_coeff[%u]=%d\n", i, subframe->data.lpc.qlp_coeff[i]);
- for(i = 0; i < subframe->data.lpc.order; i++)
- fprintf(fout, "\t\twarmup[%u]=%d\n", i, subframe->data.lpc.warmup[i]);
- partitions = (1u << subframe->data.lpc.entropy_coding_method.data.partitioned_rice.order);
- for(i = 0; i < partitions; i++) {
- unsigned parameter = subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents->parameters[i];
- if(parameter == pesc)
- fprintf(fout, "\t\tparameter[%u]=ESCAPE, raw_bits=%u\n", i, subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents->raw_bits[i]);
- else
- fprintf(fout, "\t\tparameter[%u]=%u\n", i, parameter);
- }
- if(aopts.do_residual_text) {
- for(i = 0; i < frame->header.blocksize-subframe->data.lpc.order; i++)
- fprintf(fout, "\t\tresidual[%u]=%d\n", i, subframe->data.lpc.residual[i]);
- }
- break;
- case FLAC__SUBFRAME_TYPE_VERBATIM:
- fprintf(fout, "\n");
- break;
- }
- }
-
- /* now do the residual distributions if requested */
- if(aopts.do_residual_gnuplot) {
- for(channel = 0; channel < channels; channel++) {
- const FLAC__Subframe *subframe = frame->subframes+channel;
- unsigned residual_samples;
-
- init_stats(&stats);
-
- switch(subframe->type) {
- case FLAC__SUBFRAME_TYPE_FIXED:
- residual_samples = frame->header.blocksize - subframe->data.fixed.order;
- for(i = 0; i < residual_samples; i++)
- update_stats(&stats, subframe->data.fixed.residual[i], 1);
- break;
- case FLAC__SUBFRAME_TYPE_LPC:
- residual_samples = frame->header.blocksize - subframe->data.lpc.order;
- for(i = 0; i < residual_samples; i++)
- update_stats(&stats, subframe->data.lpc.residual[i], 1);
- break;
- default:
- break;
- }
-
- /* update all_ */
- for(i = 0; i < stats.nbuckets; i++) {
- update_stats(&all_, stats.buckets[i].residual, stats.buckets[i].count);
- }
-
- /* write the subframe */
- sprintf(outfilename, "f%06u.s%u.gp", frame_number, channel);
- compute_stats(&stats);
-
- (void)dump_stats(&stats, outfilename);
- }
- }
-}
-
-void flac__analyze_finish(analysis_options aopts)
-{
- if(aopts.do_residual_gnuplot) {
- compute_stats(&all_);
- (void)dump_stats(&all_, "all");
- }
-}
-
-void init_stats(subframe_stats_t *stats)
-{
- stats->peak_index = -1;
- stats->nbuckets = 0;
- stats->nsamples = 0;
- stats->sum = 0.0;
- stats->sos = 0.0;
-}
-
-void update_stats(subframe_stats_t *stats, FLAC__int32 residual, unsigned incr)
-{
- unsigned i;
- const double r = (double)residual, a = r*incr;
-
- stats->nsamples += incr;
- stats->sum += a;
- stats->sos += (a*r);
-
- for(i = 0; i < stats->nbuckets; i++) {
- if(stats->buckets[i].residual == residual) {
- stats->buckets[i].count += incr;
- goto find_peak;
- }
- }
- /* not found, make a new bucket */
- i = stats->nbuckets;
- stats->buckets[i].residual = residual;
- stats->buckets[i].count = incr;
- stats->nbuckets++;
-find_peak:
- if(stats->peak_index < 0 || stats->buckets[i].count > stats->buckets[stats->peak_index].count)
- stats->peak_index = i;
-}
-
-void compute_stats(subframe_stats_t *stats)
-{
- stats->mean = stats->sum / (double)stats->nsamples;
- stats->variance = (stats->sos - (stats->sum * stats->sum / stats->nsamples)) / stats->nsamples;
- stats->stddev = sqrt(stats->variance);
-}
-
-FLAC__bool dump_stats(const subframe_stats_t *stats, const char *filename)
-{
- FILE *outfile;
- unsigned i;
- const double m = stats->mean;
- const double s1 = stats->stddev, s2 = s1*2, s3 = s1*3, s4 = s1*4, s5 = s1*5, s6 = s1*6;
- const double p = stats->buckets[stats->peak_index].count;
-
- outfile = fopen(filename, "w");
-
- if(0 == outfile) {
- fprintf(stderr, "ERROR opening %s: %s\n", filename, strerror(errno));
- return false;
- }
-
- fprintf(outfile, "plot '-' title 'PDF', '-' title 'mean' with impulses, '-' title '1-stddev' with histeps, '-' title '2-stddev' with histeps, '-' title '3-stddev' with histeps, '-' title '4-stddev' with histeps, '-' title '5-stddev' with histeps, '-' title '6-stddev' with histeps\n");
-
- for(i = 0; i < stats->nbuckets; i++) {
- fprintf(outfile, "%d %u\n", stats->buckets[i].residual, stats->buckets[i].count);
- }
- fprintf(outfile, "e\n");
-
- fprintf(outfile, "%f %f\ne\n", stats->mean, p);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s1, p*0.8, m+s1, p*0.8);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s2, p*0.7, m+s2, p*0.7);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s3, p*0.6, m+s3, p*0.6);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s4, p*0.5, m+s4, p*0.5);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s5, p*0.4, m+s5, p*0.4);
- fprintf(outfile, "%f %f\n%f %f\ne\n", m-s6, p*0.3, m+s6, p*0.3);
-
- fprintf(outfile, "pause -1 'waiting...'\n");
-
- fclose(outfile);
- return true;
-}