diff options
Diffstat (limited to 'src/test_libs_common/file_utils_flac.c')
| -rw-r--r-- | src/test_libs_common/file_utils_flac.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/test_libs_common/file_utils_flac.c b/src/test_libs_common/file_utils_flac.c new file mode 100644 index 0000000..3cc8c30 --- /dev/null +++ b/src/test_libs_common/file_utils_flac.c @@ -0,0 +1,155 @@ +/* test_libFLAC - Unit tester for libFLAC + * Copyright (C) 2002-2009 Josh Coalson + * Copyright (C) 2011-2023 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; + +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) +{ + 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(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) +{ + FLAC__int32 samples[1024]; + FLAC__StreamEncoder *encoder; + FLAC__StreamEncoderInitStatus init_status; + encoder_client_struct encoder_client_data; + uint32_t 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 = 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; +} |