src/test_libs_common/file_utils_flac.c

   1 /* test_libFLAC - Unit tester for libFLAC
   2  * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #if HAVE_CONFIG_H
  20 #  include <config.h>
  21 #endif
  22
  23 #include "FLAC/assert.h"
  24 #include "FLAC/stream_encoder.h"
  25 #include "test_libs_common/file_utils_flac.h"
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <sys/stat.h> /* for stat() */
  29 #include "share/compat.h"
  30
  31 #ifdef min
  32 #undef min
  33 #endif
  34 #define min(a,b) ((a)<(b)?(a):(b))
  35
  36 const long file_utils__ogg_serial_number = 12345;
  37
  38 #ifdef FLAC__VALGRIND_TESTING
  39 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
  40 {
  41         size_t ret = fwrite(ptr, size, nmemb, stream);
  42         if(!ferror(stream))
  43                 fflush(stream);
  44         return ret;
  45 }
  46 #else
  47 #define local__fwrite fwrite
  48 #endif
  49
  50 typedef struct {
  51         FILE *file;
  52 } encoder_client_struct;
  53
  54 static FLAC__StreamEncoderWriteStatus encoder_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
  55 {
  56         encoder_client_struct *ecd = (encoder_client_struct*)client_data;
  57
  58         (void)encoder, (void)samples, (void)current_frame;
  59
  60         if(local__fwrite(buffer, 1, bytes, ecd->file) != bytes)
  61                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
  62         else
  63                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
  64 }
  65
  66 static void encoder_metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
  67 {
  68         (void)encoder, (void)metadata, (void)client_data;
  69 }
  70
  71 FLAC__bool file_utils__generate_flacfile(FLAC__bool is_ogg, const char *output_filename, FLAC__off_t *output_filesize, unsigned length, const FLAC__StreamMetadata *streaminfo, FLAC__StreamMetadata **metadata, unsigned num_metadata)
  72 {
  73         FLAC__int32 samples[1024];
  74         FLAC__StreamEncoder *encoder;
  75         FLAC__StreamEncoderInitStatus init_status;
  76         encoder_client_struct encoder_client_data;
  77         unsigned i, n;
  78
  79         FLAC__ASSERT(0 != output_filename);
  80         FLAC__ASSERT(0 != streaminfo);
  81         FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
  82         FLAC__ASSERT((streaminfo->is_last && num_metadata == 0) || (!streaminfo->is_last && num_metadata > 0));
  83
  84         if(0 == (encoder_client_data.file = fopen(output_filename, "wb")))
  85                 return false;
  86
  87         encoder = FLAC__stream_encoder_new();
  88         if(0 == encoder) {
  89                 fclose(encoder_client_data.file);
  90                 return false;
  91         }
  92
  93         FLAC__stream_encoder_set_ogg_serial_number(encoder, file_utils__ogg_serial_number);
  94         FLAC__stream_encoder_set_verify(encoder, true);
  95         FLAC__stream_encoder_set_streamable_subset(encoder, true);
  96         FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
  97         FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
  98         FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
  99         FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
 100         FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
 101         FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
 102         FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
 103         FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
 104         FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
 105         FLAC__stream_encoder_set_do_escape_coding(encoder, false);
 106         FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
 107         FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
 108         FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
 109         FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
 110         FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
 111         FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
 112
 113         if(is_ogg)
 114                 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);
 115         else
 116                 init_status = FLAC__stream_encoder_init_stream(encoder, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
 117
 118         if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
 119                 fclose(encoder_client_data.file);
 120                 return false;
 121         }
 122
 123         /* init the dummy sample buffer */
 124         for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
 125                 samples[i] = i & 7;
 126
 127         while(length > 0) {
 128                 n = min(length, sizeof(samples) / sizeof(FLAC__int32));
 129
 130                 if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
 131                         fclose(encoder_client_data.file);
 132                         return false;
 133                 }
 134
 135                 length -= n;
 136         }
 137
 138         (void)FLAC__stream_encoder_finish(encoder);
 139
 140         fclose(encoder_client_data.file);
 141
 142         FLAC__stream_encoder_delete(encoder);
 143
 144         if(0 != output_filesize) {
 145 #if defined _MSC_VER || defined __MINGW32__
 146                 struct _stat64 filestats;
 147
 148                 if(_stat64(output_filename, &filestats) != 0)
 149 #else
 150                 struct stat filestats;
 151
 152                 if(stat(output_filename, &filestats) != 0)
 153 #endif
 154                         return false;
 155                 else
 156                         *output_filesize = filestats.st_size;
 157         }
 158
 159         return true;
 160 }