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author | 2023-12-06 17:12:21 +1100 | |
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committer | 2023-12-06 17:12:45 +1100 | |
commit | 414c5ce5a54d242ccc0303b4f94e8d7cfe651570 (patch) | |
tree | d4f74eb35d22b58f33eecc3e3cf2529703c8be2a /3rdparty/libflac/examples/cpp/decode/file/main.cpp | |
parent | faf991a563a9bf8adc7aeee80001606d58857b99 (diff) |
3rdparty: Renamed libflac to flac - it's a full FLAC distribution, libFLAC is just a small part of it.
Diffstat (limited to '3rdparty/libflac/examples/cpp/decode/file/main.cpp')
-rw-r--r-- | 3rdparty/libflac/examples/cpp/decode/file/main.cpp | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/3rdparty/libflac/examples/cpp/decode/file/main.cpp b/3rdparty/libflac/examples/cpp/decode/file/main.cpp deleted file mode 100644 index d1c29958d69..00000000000 --- a/3rdparty/libflac/examples/cpp/decode/file/main.cpp +++ /dev/null @@ -1,195 +0,0 @@ -/* example_cpp_decode_file - Simple FLAC file decoder using libFLAC - * Copyright (C) 2007-2009 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. - */ - -/* - * This example shows how to use libFLAC++ to decode a FLAC file to a WAVE - * file. It only supports 16-bit stereo files. - * - * Complete API documentation can be found at: - * http://xiph.org/flac/api/ - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <stdlib.h> - -#include "FLAC++/decoder.h" -#include "share/compat.h" - -static FLAC__uint64 total_samples = 0; -static uint32_t sample_rate = 0; -static uint32_t channels = 0; -static uint32_t bps = 0; - -static bool write_little_endian_uint16(FILE *f, FLAC__uint16 x) -{ - return - fputc(x, f) != EOF && - fputc(x >> 8, f) != EOF - ; -} - -static bool write_little_endian_int16(FILE *f, FLAC__int16 x) -{ - return write_little_endian_uint16(f, (FLAC__uint16)x); -} - -static bool write_little_endian_uint32(FILE *f, FLAC__uint32 x) -{ - return - fputc(x, f) != EOF && - fputc(x >> 8, f) != EOF && - fputc(x >> 16, f) != EOF && - fputc(x >> 24, f) != EOF - ; -} - -class OurDecoder: public FLAC::Decoder::File { -public: - OurDecoder(FILE *f_): FLAC::Decoder::File(), f(f_) { } -protected: - FILE *f; - - virtual ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]); - virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata); - virtual void error_callback(::FLAC__StreamDecoderErrorStatus status); -private: - OurDecoder(const OurDecoder&); - OurDecoder&operator=(const OurDecoder&); -}; - -int main(int argc, char *argv[]) -{ - bool ok = true; - FILE *fout; - - if(argc != 3) { - fprintf(stderr, "usage: %s infile.flac outfile.wav\n", argv[0]); - return 1; - } - - if((fout = fopen(argv[2], "wb")) == NULL) { - fprintf(stderr, "ERROR: opening %s for output\n", argv[2]); - return 1; - } - - OurDecoder decoder(fout); - - if(!decoder) { - fprintf(stderr, "ERROR: allocating decoder\n"); - fclose(fout); - return 1; - } - - (void)decoder.set_md5_checking(true); - - FLAC__StreamDecoderInitStatus init_status = decoder.init(argv[1]); - if(init_status != FLAC__STREAM_DECODER_INIT_STATUS_OK) { - fprintf(stderr, "ERROR: initializing decoder: %s\n", FLAC__StreamDecoderInitStatusString[init_status]); - ok = false; - } - - if(ok) { - ok = decoder.process_until_end_of_stream(); - fprintf(stderr, "decoding: %s\n", ok? "succeeded" : "FAILED"); - fprintf(stderr, " state: %s\n", decoder.get_state().resolved_as_cstring(decoder)); - } - - fclose(fout); - - return 0; -} - -::FLAC__StreamDecoderWriteStatus OurDecoder::write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) -{ - const FLAC__uint32 total_size = (FLAC__uint32)(total_samples * channels * (bps/8)); - size_t i; - - // Update data - channels = OurDecoder::get_channels(); - bps = OurDecoder::get_bits_per_sample(); - - if(total_samples == 0) { - fprintf(stderr, "ERROR: this example only works for FLAC files that have a total_samples count in STREAMINFO\n"); - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - } - if(channels != 2 || bps != 16) { - fprintf(stderr, "ERROR: this example only supports 16bit stereo streams\n"); - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - } - - /* write WAVE header before we write the first frame */ - if(frame->header.number.sample_number == 0) { - if( - fwrite("RIFF", 1, 4, f) < 4 || - !write_little_endian_uint32(f, total_size + 36) || - fwrite("WAVEfmt ", 1, 8, f) < 8 || - !write_little_endian_uint32(f, 16) || - !write_little_endian_uint16(f, 1) || - !write_little_endian_uint16(f, (FLAC__uint16)channels) || - !write_little_endian_uint32(f, sample_rate) || - !write_little_endian_uint32(f, sample_rate * channels * (bps/8)) || - !write_little_endian_uint16(f, (FLAC__uint16)(channels * (bps/8))) || /* block align */ - !write_little_endian_uint16(f, (FLAC__uint16)bps) || - fwrite("data", 1, 4, f) < 4 || - !write_little_endian_uint32(f, total_size) - ) { - fprintf(stderr, "ERROR: write error\n"); - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - } - } - - /* write decoded PCM samples */ - for(i = 0; i < frame->header.blocksize; i++) { - if( - !write_little_endian_int16(f, (FLAC__int16)buffer[0][i]) || /* left channel */ - !write_little_endian_int16(f, (FLAC__int16)buffer[1][i]) /* right channel */ - ) { - fprintf(stderr, "ERROR: write error\n"); - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - } - } - - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} - -void OurDecoder::metadata_callback(const ::FLAC__StreamMetadata *metadata) -{ - /* print some stats */ - if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) { - /* save for later */ - total_samples = metadata->data.stream_info.total_samples; - sample_rate = metadata->data.stream_info.sample_rate; - channels = metadata->data.stream_info.channels; - bps = metadata->data.stream_info.bits_per_sample; - - fprintf(stderr, "sample rate : %u Hz\n", sample_rate); - fprintf(stderr, "channels : %u\n", channels); - fprintf(stderr, "bits per sample: %u\n", bps); - fprintf(stderr, "total samples : %" PRIu64 "\n", total_samples); - } -} - -void OurDecoder::error_callback(::FLAC__StreamDecoderErrorStatus status) -{ - fprintf(stderr, "Got error callback: %s\n", FLAC__StreamDecoderErrorStatusString[status]); -} |