main.c 14.8 KB
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/* test_seeking - Seeking tester for libFLAC
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 * Copyright (C) 2004,2005,2006,2007  Josh Coalson
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 *
 * 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.
 */

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#if HAVE_CONFIG_H
#  include <config.h>
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#endif

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#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined _MSC_VER || defined __MINGW32__
#include <time.h>
#else
#include <sys/time.h>
#endif
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#include <sys/stat.h> /* for stat() */
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#include "FLAC/assert.h"
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#include "FLAC/metadata.h"
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#include "FLAC/stream_decoder.h"
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typedef struct {
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	FLAC__int32 **pcm;
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	FLAC__bool got_data;
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	FLAC__uint64 total_samples;
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	unsigned channels;
	unsigned bits_per_sample;
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	FLAC__bool quiet;
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	FLAC__bool ignore_errors;
	FLAC__bool error_occurred;
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} DecoderClientData;
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static FLAC__bool stop_signal_ = false;

static void our_sigint_handler_(int signal)
{
	(void)signal;
	printf("(caught SIGINT) ");
	fflush(stdout);
	stop_signal_ = true;
}

static FLAC__bool die_(const char *msg)
{
	printf("ERROR: %s\n", msg);
	return false;
}

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static FLAC__bool die_s_(const char *msg, const FLAC__StreamDecoder *decoder)
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{
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	FLAC__StreamDecoderState state = FLAC__stream_decoder_get_state(decoder);
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	if(msg)
		printf("FAILED, %s", msg);
	else
		printf("FAILED");

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	printf(", state = %u (%s)\n", (unsigned)state, FLAC__StreamDecoderStateString[state]);
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	return false;
}

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static unsigned local_rand_(void)
{
#if !defined _MSC_VER && !defined __MINGW32__
#define RNDFUNC random
#else
#define RNDFUNC rand
#endif
	/* every RAND_MAX I've ever seen is 2^15-1 or 2^31-1, so a little hackery here: */
	if (RAND_MAX > 32767)
		return RNDFUNC();
	else /* usually MSVC, some solaris */
		return (RNDFUNC()<<15) | RNDFUNC();
#undef RNDFUNC
}

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static off_t get_filesize_(const char *srcpath)
{
	struct stat srcstat;

	if(0 == stat(srcpath, &srcstat))
		return srcstat.st_size;
	else
		return -1;
}

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static FLAC__bool read_pcm_(FLAC__int32 *pcm[], const char *rawfilename, const char *flacfilename)
{
	FILE *f;
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	unsigned channels = 0, bps = 0, samples, i, j;
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	off_t rawfilesize = get_filesize_(rawfilename);
	if (rawfilesize < 0) {
		fprintf(stderr, "ERROR: can't determine filesize for %s\n", rawfilename);
		return false;
	}
	/* get sample format from flac file; would just use FLAC__metadata_get_streaminfo() except it doesn't work for Ogg FLAC yet */
	{
#if 0
		FLAC__StreamMetadata streaminfo;
		if(!FLAC__metadata_get_streaminfo(flacfilename, &streaminfo)) {
			printf("ERROR: getting STREAMINFO from %s\n", flacfilename);
			return false;
		}
		channels = streaminfo.data.stream_info.channels;
		bps = streaminfo.data.stream_info.bits_per_sample;
#else
		FLAC__bool ok = true;
		FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
		FLAC__Metadata_Iterator *it = 0;
		ok = ok && chain && (FLAC__metadata_chain_read(chain, flacfilename) || FLAC__metadata_chain_read_ogg(chain, flacfilename));
		ok = ok && (it = FLAC__metadata_iterator_new());
		if(ok) FLAC__metadata_iterator_init(it, chain);
		ok = ok && (FLAC__metadata_iterator_get_block(it)->type == FLAC__METADATA_TYPE_STREAMINFO);
		ok = ok && (channels = FLAC__metadata_iterator_get_block(it)->data.stream_info.channels);
		ok = ok && (bps = FLAC__metadata_iterator_get_block(it)->data.stream_info.bits_per_sample);
		if(it) FLAC__metadata_iterator_delete(it);
		if(chain) FLAC__metadata_chain_delete(chain);
		if(!ok) {
			printf("ERROR: getting STREAMINFO from %s\n", flacfilename);
			return false;
		}
#endif
	}
	if(channels > 2) {
		printf("ERROR: PCM verification requires 1 or 2 channels, got %u\n", channels);
		return false;
	}
	if(bps != 8 && bps != 16) {
		printf("ERROR: PCM verification requires 8 or 16 bps, got %u\n", bps);
		return false;
	}
	samples = rawfilesize / channels / (bps>>3);
	if (samples > 10000000) {
		fprintf(stderr, "ERROR: %s is too big\n", rawfilename);
		return false;
	}
	for(i = 0; i < channels; i++) {
		if(0 == (pcm[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32)*samples))) {
			printf("ERROR: allocating space for PCM samples\n");
			return false;
		}
	}
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	if(0 == (f = fopen(rawfilename, "rb"))) {
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		printf("ERROR: opening %s for reading\n", rawfilename);
		return false;
	}
	/* assumes signed big-endian data */
	if(bps == 8) {
		signed char c;
		for(i = 0; i < samples; i++) {
			for(j = 0; j < channels; j++) {
				fread(&c, 1, 1, f);
				pcm[j][i] = c;
			}
		}
	}
	else { /* bps == 16 */
		unsigned char c[2];
		for(i = 0; i < samples; i++) {
			for(j = 0; j < channels; j++) {
				fread(&c, 1, 2, f);
				pcm[j][i] = ((int)((signed char)c[0])) << 8 | (int)c[1];
			}
		}
	}
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	fclose(f);
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	return true;
}

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static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
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{
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	DecoderClientData *dcd = (DecoderClientData*)client_data;
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	(void)decoder, (void)buffer;

	if(0 == dcd) {
		printf("ERROR: client_data in write callback is NULL\n");
		return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
	}

	if(dcd->error_occurred)
		return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;

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	FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER); /* decoder guarantees this */
	if (!dcd->quiet)
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#ifdef _MSC_VER
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		printf("frame@%I64u(%u)... ", frame->header.number.sample_number, frame->header.blocksize);
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#else
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		printf("frame@%llu(%u)... ", (unsigned long long)frame->header.number.sample_number, frame->header.blocksize);
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#endif
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	fflush(stdout);

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	/* check against PCM data if we have it */
	if (dcd->pcm) {
		unsigned c, i, j;
		for (c = 0; c < frame->header.channels; c++)
			for (i = (unsigned)frame->header.number.sample_number, j = 0; j < frame->header.blocksize; i++, j++)
				if (buffer[c][j] != dcd->pcm[c][i]) {
					printf("ERROR: sample mismatch at sample#%u(%u), channel=%u, expected %d, got %d\n", i, j, c, buffer[c][j], dcd->pcm[c][i]);
					return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
				}
	}

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	return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}

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static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
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{
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	DecoderClientData *dcd = (DecoderClientData*)client_data;
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	(void)decoder;

	if(0 == dcd) {
		printf("ERROR: client_data in metadata callback is NULL\n");
		return;
	}

	if(dcd->error_occurred)
		return;

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	if (!dcd->got_data && metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
		dcd->got_data = true;
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		dcd->total_samples = metadata->data.stream_info.total_samples;
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		dcd->channels = metadata->data.stream_info.channels;
		dcd->bits_per_sample = metadata->data.stream_info.bits_per_sample;
	}
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}

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static void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
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{
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	DecoderClientData *dcd = (DecoderClientData*)client_data;
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	(void)decoder;

	if(0 == dcd) {
		printf("ERROR: client_data in error callback is NULL\n");
		return;
	}

	if(!dcd->ignore_errors) {
		printf("ERROR: got error callback: err = %u (%s)\n", (unsigned)status, FLAC__StreamDecoderErrorStatusString[status]);
		dcd->error_occurred = true;
	}
}

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/* read mode:
 * 0 - no read after seek
 * 1 - read 2 frames
 * 2 - read until end
 */
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static FLAC__bool seek_barrage(FLAC__bool is_ogg, const char *filename, off_t filesize, unsigned count, FLAC__int64 total_samples, unsigned read_mode, FLAC__int32 **pcm)
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{
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	FLAC__StreamDecoder *decoder;
	DecoderClientData decoder_client_data;
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	unsigned i;
	long int n;

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	decoder_client_data.pcm = pcm;
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	decoder_client_data.got_data = false;
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	decoder_client_data.total_samples = 0;
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	decoder_client_data.quiet = false;
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	decoder_client_data.ignore_errors = false;
	decoder_client_data.error_occurred = false;

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	printf("\n+++ seek test: FLAC__StreamDecoder (%s FLAC, read_mode=%u)\n\n", is_ogg? "Ogg":"native", read_mode);
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	decoder = FLAC__stream_decoder_new();
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	if(0 == decoder)
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		return die_("FLAC__stream_decoder_new() FAILED, returned NULL\n");
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	if(is_ogg) {
		if(FLAC__stream_decoder_init_ogg_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &decoder_client_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
			return die_s_("FLAC__stream_decoder_init_file() FAILED", decoder);
	}
	else {
		if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &decoder_client_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
			return die_s_("FLAC__stream_decoder_init_file() FAILED", decoder);
	}
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	if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
		return die_s_("FLAC__stream_decoder_process_until_end_of_metadata() FAILED", decoder);
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	if(!is_ogg) { /* not necessary to do this for Ogg because of its seeking method */
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	/* process until end of stream to make sure we can still seek in that state */
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		decoder_client_data.quiet = true;
		if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
			return die_s_("FLAC__stream_decoder_process_until_end_of_stream() FAILED", decoder);
		decoder_client_data.quiet = false;

		printf("stream decoder state is %s\n", FLAC__stream_decoder_get_resolved_state_string(decoder));
		if(FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_END_OF_STREAM)
			return die_s_("expected FLAC__STREAM_DECODER_END_OF_STREAM", decoder);
	}
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#ifdef _MSC_VER
	printf("file's total_samples is %I64u\n", decoder_client_data.total_samples);
#else
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	printf("file's total_samples is %llu\n", (unsigned long long)decoder_client_data.total_samples);
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#endif
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	n = (long int)decoder_client_data.total_samples;

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	if(n == 0 && total_samples >= 0)
		n = (long int)total_samples;

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	/* if we don't have a total samples count, just guess based on the file size */
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	/* @@@ for is_ogg we should get it from last page's granulepos */
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	if(n == 0) {
		/* 8 would imply no compression, 9 guarantees that we will get some samples off the end of the stream to test that case */
		n = 9 * filesize / (decoder_client_data.channels * decoder_client_data.bits_per_sample);
	}

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	printf("Begin seek barrage, count=%u\n", count);

	for (i = 0; !stop_signal_ && (count == 0 || i < count); i++) {
		FLAC__uint64 pos;

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		/* for the first 10, seek to the first 10 samples */
		if (n >= 10 && i < 10) {
			pos = i;
		}
		/* for the second 10, seek to the last 10 samples */
		else if (n >= 10 && i < 20) {
			pos = n - 1 - (i-10);
		}
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		/* for the third 10, seek past the end and make sure we fail properly as expected */
		else if (i < 30) {
			pos = n + (i-20);
		}
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		else {
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			pos = (FLAC__uint64)(local_rand_() % n);
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		}
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#ifdef _MSC_VER
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		printf("#%u:seek(%I64u)... ", i, pos);
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#else
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		printf("#%u:seek(%llu)... ", i, (unsigned long long)pos);
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#endif
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		fflush(stdout);
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		if(!FLAC__stream_decoder_seek_absolute(decoder, pos)) {
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			if(pos >= (FLAC__uint64)n)
				printf("seek past end failed as expected... ");
			else if(decoder_client_data.total_samples == 0 && total_samples <= 0)
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				printf("seek failed, assuming it was past EOF... ");
			else
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				return die_s_("FLAC__stream_decoder_seek_absolute() FAILED", decoder);
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			if(!FLAC__stream_decoder_flush(decoder))
				return die_s_("FLAC__stream_decoder_flush() FAILED", decoder);
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		}
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		else if(read_mode == 1) {
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			printf("decode_frame... ");
			fflush(stdout);
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			if(!FLAC__stream_decoder_process_single(decoder))
				return die_s_("FLAC__stream_decoder_process_single() FAILED", decoder);
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			printf("decode_frame... ");
			fflush(stdout);
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			if(!FLAC__stream_decoder_process_single(decoder))
				return die_s_("FLAC__stream_decoder_process_single() FAILED", decoder);
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		}
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		else if(read_mode == 2) {
			printf("decode_all... ");
			fflush(stdout);
			decoder_client_data.quiet = true;
			if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
				return die_s_("FLAC__stream_decoder_process_until_end_of_stream() FAILED", decoder);
			decoder_client_data.quiet = false;
		}
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		printf("OK\n");
		fflush(stdout);
	}
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	stop_signal_ = false;
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	if(FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_UNINITIALIZED) {
		if(!FLAC__stream_decoder_finish(decoder))
			return die_s_("FLAC__stream_decoder_finish() FAILED", decoder);
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	}

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	FLAC__stream_decoder_delete(decoder);
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	printf("\nPASSED!\n");

	return true;
}

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#ifdef _MSC_VER
/* There's no strtoull() in MSVC6 so we just write a specialized one */
static FLAC__uint64 local__strtoull(const char *src)
{
	FLAC__uint64 ret = 0;
	int c;
	FLAC__ASSERT(0 != src);
	while(0 != (c = *src++)) {
		c -= '0';
		if(c >= 0 && c <= 9)
			ret = (ret * 10) + c;
		else
			break;
	}
	return ret;
}
#endif

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int main(int argc, char *argv[])
{
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	const char *flacfilename, *rawfilename = 0;
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	unsigned count = 0, read_mode;
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	FLAC__int64 samples = -1;
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	off_t flacfilesize;
	FLAC__int32 *pcm[2] = { 0, 0 };
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	FLAC__bool ok = true;
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	static const char * const usage = "usage: test_seeking file.flac [#seeks] [#samples-in-file.flac] [file.raw]\n";
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	if (argc < 2 || argc > 5) {
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		fprintf(stderr, usage);
		return 1;
	}

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	flacfilename = argv[1];
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	if (argc > 2)
		count = strtoul(argv[2], 0, 10);
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	if (argc > 3)
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#ifdef _MSC_VER
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		samples = local__strtoull(argv[3]);
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#else
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		samples = strtoull(argv[3], 0, 10);
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#endif
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	if (argc > 4)
		rawfilename = argv[4];
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	if (count < 30)
		fprintf(stderr, "WARNING: random seeks don't kick in until after 30 preprogrammed ones\n");
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#if !defined _MSC_VER && !defined __MINGW32__
	{
		struct timeval tv;

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		if (gettimeofday(&tv, 0) < 0) {
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			fprintf(stderr, "WARNING: couldn't seed RNG with time\n");
			tv.tv_usec = 4321;
		}
		srandom(tv.tv_usec);
	}
#else
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	srand((unsigned)time(0));
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#endif

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	flacfilesize = get_filesize_(flacfilename);
	if (flacfilesize < 0) {
		fprintf(stderr, "ERROR: can't determine filesize for %s\n", flacfilename);
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		return 1;
	}

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	if (rawfilename && !read_pcm_(pcm, rawfilename, flacfilename)) {
		free(pcm[0]);
		free(pcm[1]);
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		return 1;
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	}
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	(void) signal(SIGINT, our_sigint_handler_);

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	for (read_mode = 0; ok && read_mode <= 2; read_mode++) {
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		/* no need to do "decode all" read_mode if PCM checking is available */
		if (rawfilename && read_mode > 1)
			continue;
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		if (strlen(flacfilename) > 4 && (0 == strcmp(flacfilename+strlen(flacfilename)-4, ".oga") || 0 == strcmp(flacfilename+strlen(flacfilename)-4, ".ogg"))) {
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#if FLAC__HAS_OGG
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			ok = seek_barrage(/*is_ogg=*/true, flacfilename, flacfilesize, count, samples, read_mode, rawfilename? pcm : 0);
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#else
			fprintf(stderr, "ERROR: Ogg FLAC not supported\n");
			ok = false;
#endif
		}
		else {
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			ok = seek_barrage(/*is_ogg=*/false, flacfilename, flacfilesize, count, samples, read_mode, rawfilename? pcm : 0);
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		}
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	}
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	free(pcm[0]);
	free(pcm[1]);

	return ok? 0 : 2;
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}