file_utils.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:5k
源码类别:
Windows CE
开发平台:
C/C++
- /* test_libFLAC - Unit tester for libFLAC
- * Copyright (C) 2002,2003,2004,2005 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.
- */
- #include "file_utils.h"
- #include "FLAC/assert.h"
- #include "FLAC/stream_encoder.h"
- #include <stdio.h>
- #include <stdlib.h>
- #include <sys/stat.h> /* for stat() */
- #ifdef min
- #undef min
- #endif
- #define min(a,b) ((a)<(b)?(a):(b))
- #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;
- static FLAC__StreamEncoderWriteStatus encoder_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
- {
- 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;
- }
- FLAC__bool file_utils__generate_flacfile(const char *output_filename, unsigned *output_filesize, unsigned length, const FLAC__StreamMetadata *streaminfo, FLAC__StreamMetadata **metadata, unsigned num_metadata)
- {
- FLAC__int32 samples[1024];
- FLAC__StreamEncoder *encoder;
- encoder_client_struct encoder_client_data;
- unsigned i, n;
- 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 = 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_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);
- FLAC__stream_encoder_set_write_callback(encoder, encoder_write_callback_);
- FLAC__stream_encoder_set_metadata_callback(encoder, encoder_metadata_callback_);
- FLAC__stream_encoder_set_client_data(encoder, &encoder_client_data);
- if(FLAC__stream_encoder_init(encoder) != FLAC__STREAM_ENCODER_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;
- }
- FLAC__stream_encoder_finish(encoder);
- fclose(encoder_client_data.file);
- FLAC__stream_encoder_delete(encoder);
- if(0 != output_filesize) {
- struct stat filestats;
- if(stat(output_filename, &filestats) != 0)
- return false;
- else
- *output_filesize = (unsigned)filestats.st_size;
- }
- return true;
- }