add a "tell" callback to the seekable stream encoder to make the metadata writeback...
[flac.git] / src / test_libFLAC++ / file_utils.c
1 /* test_libFLAC - Unit tester for libFLAC
2  * Copyright (C) 2002,2003  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 #include "file_utils.h"
20 #include "FLAC/assert.h"
21 #include "FLAC/stream_encoder.h"
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <sys/stat.h> /* for stat() */
25
26 #ifdef min
27 #undef min
28 #endif
29 #define min(a,b) ((a)<(b)?(a):(b))
30
31 #ifdef FLAC__VALGRIND_TESTING
32 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
33 {
34         size_t ret = fwrite(ptr, size, nmemb, stream);
35         if(!ferror(stream))
36                 fflush(stream);
37         return ret;
38 }
39 #else
40 #define local__fwrite fwrite
41 #endif
42
43 typedef struct {
44         FILE *file;
45 } encoder_client_struct;
46
47 static FLAC__StreamEncoderWriteStatus encoder_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
48 {
49         encoder_client_struct *ecd = (encoder_client_struct*)client_data;
50
51         (void)encoder, (void)samples, (void)current_frame;
52
53         if(local__fwrite(buffer, 1, bytes, ecd->file) != bytes)
54                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
55         else
56                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
57 }
58
59 static void encoder_metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
60 {
61         (void)encoder, (void)metadata, (void)client_data;
62 }
63
64 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)
65 {
66         FLAC__int32 samples[1024];
67         FLAC__StreamEncoder *encoder;
68         encoder_client_struct encoder_client_data;
69         unsigned i, n;
70
71         FLAC__ASSERT(0 != output_filename);
72         FLAC__ASSERT(0 != streaminfo);
73         FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
74         FLAC__ASSERT((streaminfo->is_last && num_metadata == 0) || (!streaminfo->is_last && num_metadata > 0));
75
76         if(0 == (encoder_client_data.file = fopen(output_filename, "wb")))
77                 return false;
78
79         encoder = FLAC__stream_encoder_new();
80         if(0 == encoder) {
81                 fclose(encoder_client_data.file);
82                 return false;
83         }
84
85         FLAC__stream_encoder_set_verify(encoder, true);
86         FLAC__stream_encoder_set_streamable_subset(encoder, true);
87         FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
88         FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
89         FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
90         FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
91         FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
92         FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
93         FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
94         FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
95         FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
96         FLAC__stream_encoder_set_do_escape_coding(encoder, false);
97         FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
98         FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
99         FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
100         FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
101         FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
102         FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
103         FLAC__stream_encoder_set_write_callback(encoder, encoder_write_callback_);
104         FLAC__stream_encoder_set_metadata_callback(encoder, encoder_metadata_callback_);
105         FLAC__stream_encoder_set_client_data(encoder, &encoder_client_data);
106
107         if(FLAC__stream_encoder_init(encoder) != FLAC__STREAM_ENCODER_OK) {
108                 fclose(encoder_client_data.file);
109                 return false;
110         }
111
112         /* init the dummy sample buffer */
113         for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
114                 samples[i] = i & 7;
115
116         while(length > 0) {
117                 n = min(length, sizeof(samples) / sizeof(FLAC__int32));
118
119                 if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
120                         fclose(encoder_client_data.file);
121                         return false;
122                 }
123
124                 length -= n;
125         }
126
127         FLAC__stream_encoder_finish(encoder);
128
129         fclose(encoder_client_data.file);
130
131         FLAC__stream_encoder_delete(encoder);
132
133         if(0 != output_filesize) {
134                 struct stat filestats;
135
136                 if(stat(output_filename, &filestats) != 0)
137                         return false;
138                 else
139                         *output_filesize = (unsigned)filestats.st_size;
140         }
141
142         return true;
143 }