1 /* test_libFLAC - Unit tester for libFLAC
2 * Copyright (C) 2002,2003,2004,2005,2006,2007 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
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
30 #ifdef min
31 #undef min
32 #endif
33 #define min(a,b) ((a)<(b)?(a):(b))
34
35 const long file_utils__ogg_serial_number = 12345;
36
37 #ifdef FLAC__VALGRIND_TESTING
local__fwrite(const void * ptr,size_t size,size_t nmemb,FILE * stream)38 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
39 {
40 size_t ret = fwrite(ptr, size, nmemb, stream);
41 if(!ferror(stream))
42 fflush(stream);
43 return ret;
44 }
45 #else
46 #define local__fwrite fwrite
47 #endif
48
49 typedef struct {
50 FILE *file;
51 } encoder_client_struct;
52
encoder_write_callback_(const FLAC__StreamEncoder * encoder,const FLAC__byte buffer[],size_t bytes,unsigned samples,unsigned current_frame,void * client_data)53 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)
54 {
55 encoder_client_struct *ecd = (encoder_client_struct*)client_data;
56
57 (void)encoder, (void)samples, (void)current_frame;
58
59 if(local__fwrite(buffer, 1, bytes, ecd->file) != bytes)
60 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
61 else
62 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
63 }
64
encoder_metadata_callback_(const FLAC__StreamEncoder * encoder,const FLAC__StreamMetadata * metadata,void * client_data)65 static void encoder_metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
66 {
67 (void)encoder, (void)metadata, (void)client_data;
68 }
69
file_utils__generate_flacfile(FLAC__bool is_ogg,const char * output_filename,off_t * output_filesize,unsigned length,const FLAC__StreamMetadata * streaminfo,FLAC__StreamMetadata ** metadata,unsigned num_metadata)70 FLAC__bool file_utils__generate_flacfile(FLAC__bool is_ogg, const char *output_filename, off_t *output_filesize, unsigned length, const FLAC__StreamMetadata *streaminfo, FLAC__StreamMetadata **metadata, unsigned num_metadata)
71 {
72 FLAC__int32 samples[1024];
73 FLAC__StreamEncoder *encoder;
74 FLAC__StreamEncoderInitStatus init_status;
75 encoder_client_struct encoder_client_data;
76 unsigned i, n;
77
78 FLAC__ASSERT(0 != output_filename);
79 FLAC__ASSERT(0 != streaminfo);
80 FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
81 FLAC__ASSERT((streaminfo->is_last && num_metadata == 0) || (!streaminfo->is_last && num_metadata > 0));
82
83 if(0 == (encoder_client_data.file = fopen(output_filename, "wb")))
84 return false;
85
86 encoder = FLAC__stream_encoder_new();
87 if(0 == encoder) {
88 fclose(encoder_client_data.file);
89 return false;
90 }
91
92 FLAC__stream_encoder_set_ogg_serial_number(encoder, file_utils__ogg_serial_number);
93 FLAC__stream_encoder_set_verify(encoder, true);
94 FLAC__stream_encoder_set_streamable_subset(encoder, true);
95 FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
96 FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
97 FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
98 FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
99 FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
100 FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
101 FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
102 FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
103 FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
104 FLAC__stream_encoder_set_do_escape_coding(encoder, false);
105 FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
106 FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
107 FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
108 FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
109 FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
110 FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
111
112 if(is_ogg)
113 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);
114 else
115 init_status = FLAC__stream_encoder_init_stream(encoder, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
116
117 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
118 fclose(encoder_client_data.file);
119 return false;
120 }
121
122 /* init the dummy sample buffer */
123 for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
124 samples[i] = i & 7;
125
126 while(length > 0) {
127 n = min(length, sizeof(samples) / sizeof(FLAC__int32));
128
129 if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
130 fclose(encoder_client_data.file);
131 return false;
132 }
133
134 length -= n;
135 }
136
137 (void)FLAC__stream_encoder_finish(encoder);
138
139 fclose(encoder_client_data.file);
140
141 FLAC__stream_encoder_delete(encoder);
142
143 if(0 != output_filesize) {
144 struct stat filestats;
145
146 if(stat(output_filename, &filestats) != 0)
147 return false;
148 else
149 *output_filesize = filestats.st_size;
150 }
151
152 return true;
153 }
154