file_utils_flac.c
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/* test_libFLAC - Unit tester for libFLAC
* Copyright (C) 2002-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "FLAC/assert.h"
#include "FLAC/stream_encoder.h"
#include "test_libs_common/file_utils_flac.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h> /* for stat() */
#include "share/compat.h"
#ifdef min
#undef min
#endif
#define min(a,b) ((a)<(b)?(a):(b))
const long file_utils__ogg_serial_number = 12345;
#ifdef FLAC__VALGRIND_TESTING
static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
{
size_t ret = fwrite(ptr, size, nmemb, stream);
if(!ferror(stream))
fflush(stream);
return ret;
}
#else
#define local__fwrite fwrite
#endif
typedef struct {
FILE *file;
} encoder_client_struct;
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static FLAC__StreamEncoderWriteStatus encoder_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, uint32_t samples, uint32_t current_frame, void *client_data)
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{
encoder_client_struct *ecd = (encoder_client_struct*)client_data;
(void)encoder, (void)samples, (void)current_frame;
if(local__fwrite(buffer, 1, bytes, ecd->file) != bytes)
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
else
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
static void encoder_metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
(void)encoder, (void)metadata, (void)client_data;
}
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FLAC__bool file_utils__generate_flacfile(FLAC__bool is_ogg, const char *output_filename, FLAC__off_t *output_filesize, uint32_t length, const FLAC__StreamMetadata *streaminfo, FLAC__StreamMetadata **metadata, uint32_t num_metadata)
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{
FLAC__int32 samples[1024];
FLAC__StreamEncoder *encoder;
FLAC__StreamEncoderInitStatus init_status;
encoder_client_struct encoder_client_data;
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uint32_t i, n;
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FLAC__ASSERT(0 != output_filename);
FLAC__ASSERT(0 != streaminfo);
FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
FLAC__ASSERT((streaminfo->is_last && num_metadata == 0) || (!streaminfo->is_last && num_metadata > 0));
if(0 == (encoder_client_data.file = flac_fopen(output_filename, "wb")))
return false;
encoder = FLAC__stream_encoder_new();
if(0 == encoder) {
fclose(encoder_client_data.file);
return false;
}
FLAC__stream_encoder_set_ogg_serial_number(encoder, file_utils__ogg_serial_number);
FLAC__stream_encoder_set_verify(encoder, true);
FLAC__stream_encoder_set_streamable_subset(encoder, true);
FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
FLAC__stream_encoder_set_do_escape_coding(encoder, false);
FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
if(is_ogg)
init_status = FLAC__stream_encoder_init_ogg_stream(encoder, /*read_callback=*/0, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
else
init_status = FLAC__stream_encoder_init_stream(encoder, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
fclose(encoder_client_data.file);
return false;
}
/* init the dummy sample buffer */
for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
samples[i] = i & 7;
while(length > 0) {
n = min(length, sizeof(samples) / sizeof(FLAC__int32));
if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
fclose(encoder_client_data.file);
return false;
}
length -= n;
}
(void)FLAC__stream_encoder_finish(encoder);
fclose(encoder_client_data.file);
FLAC__stream_encoder_delete(encoder);
if(0 != output_filesize) {
struct flac_stat_s filestats;
if(flac_stat(output_filename, &filestats) != 0)
return false;
else
*output_filesize = filestats.st_size;
}
return true;
}