diff options
Diffstat (limited to 'examples/cpp')
-rw-r--r-- | examples/cpp/Makefile.am | 19 | ||||
-rw-r--r-- | examples/cpp/Makefile.in | 676 | ||||
-rw-r--r-- | examples/cpp/decode/Makefile.am | 19 | ||||
-rw-r--r-- | examples/cpp/decode/Makefile.in | 676 | ||||
-rw-r--r-- | examples/cpp/decode/file/CMakeLists.txt | 2 | ||||
-rw-r--r-- | examples/cpp/decode/file/Makefile.am | 32 | ||||
-rw-r--r-- | examples/cpp/decode/file/Makefile.in | 667 | ||||
-rw-r--r-- | examples/cpp/decode/file/main.cpp | 195 | ||||
-rw-r--r-- | examples/cpp/encode/Makefile.am | 19 | ||||
-rw-r--r-- | examples/cpp/encode/Makefile.in | 676 | ||||
-rw-r--r-- | examples/cpp/encode/file/CMakeLists.txt | 2 | ||||
-rw-r--r-- | examples/cpp/encode/file/Makefile.am | 32 | ||||
-rw-r--r-- | examples/cpp/encode/file/Makefile.in | 667 | ||||
-rw-r--r-- | examples/cpp/encode/file/main.cpp | 178 |
14 files changed, 3860 insertions, 0 deletions
diff --git a/examples/cpp/Makefile.am b/examples/cpp/Makefile.am new file mode 100644 index 0000000..ced8f8e --- /dev/null +++ b/examples/cpp/Makefile.am @@ -0,0 +1,19 @@ +# FLAC - Free Lossless Audio Codec +# Copyright (C) 2001-2009 Josh Coalson +# Copyright (C) 2011-2023 Xiph.Org Foundation +# +# This file is part the FLAC project. FLAC is comprised of several +# components distributed under different licenses. The codec libraries +# are distributed under Xiph.Org's BSD-like license (see the file +# COPYING.Xiph in this distribution). All other programs, libraries, and +# plugins are distributed under the GPL (see COPYING.GPL). The documentation +# is distributed under the Gnu FDL (see COPYING.FDL). Each file in the +# FLAC distribution contains at the top the terms under which it may be +# distributed. +# +# Since this particular file is relevant to all components of FLAC, +# it may be distributed under the Xiph.Org license, which is the least +# restrictive of those mentioned above. See the file COPYING.Xiph in this +# distribution. + +SUBDIRS = decode encode diff --git a/examples/cpp/Makefile.in b/examples/cpp/Makefile.in new file mode 100644 index 0000000..290613c --- /dev/null +++ b/examples/cpp/Makefile.in @@ -0,0 +1,676 @@ +# Makefile.in generated by automake 1.16.5 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2021 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# FLAC - Free Lossless Audio Codec +# Copyright (C) 2001-2009 Josh Coalson +# Copyright (C) 2011-2023 Xiph.Org Foundation +# +# This file is part the FLAC project. 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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. + +EXTRA_DIST = \ + CMakeLists.txt + +AM_CPPFLAGS = -I$(top_builddir) -I$(srcdir)/include -I$(top_srcdir)/include +noinst_PROGRAMS = example_cpp_decode_file +example_cpp_decode_file_LDADD = \ + $(top_builddir)/src/libFLAC++/libFLAC++.la \ + $(top_builddir)/src/libFLAC/libFLAC.la \ + @OGG_LIBS@ \ + -lm + +example_cpp_decode_file_SOURCES = main.cpp + +CLEANFILES = example_cpp_decode_file.exe diff --git a/examples/cpp/decode/file/Makefile.in b/examples/cpp/decode/file/Makefile.in new file mode 100644 index 0000000..083d841 --- /dev/null +++ b/examples/cpp/decode/file/Makefile.in @@ -0,0 +1,667 @@ +# Makefile.in generated by automake 1.16.5 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2021 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# 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. 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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]); +} diff --git a/examples/cpp/encode/Makefile.am b/examples/cpp/encode/Makefile.am new file mode 100644 index 0000000..3c9499c --- /dev/null +++ b/examples/cpp/encode/Makefile.am @@ -0,0 +1,19 @@ +# FLAC - Free Lossless Audio Codec +# Copyright (C) 2001-2009 Josh Coalson +# Copyright (C) 2011-2023 Xiph.Org Foundation +# +# This file is part the FLAC project. FLAC is comprised of several +# components distributed under different licenses. The codec libraries +# are distributed under Xiph.Org's BSD-like license (see the file +# COPYING.Xiph in this distribution). All other programs, libraries, and +# plugins are distributed under the GPL (see COPYING.GPL). The documentation +# is distributed under the Gnu FDL (see COPYING.FDL). Each file in the +# FLAC distribution contains at the top the terms under which it may be +# distributed. +# +# Since this particular file is relevant to all components of FLAC, +# it may be distributed under the Xiph.Org license, which is the least +# restrictive of those mentioned above. See the file COPYING.Xiph in this +# distribution. + +SUBDIRS = file diff --git a/examples/cpp/encode/Makefile.in b/examples/cpp/encode/Makefile.in new file mode 100644 index 0000000..e8f4170 --- /dev/null +++ b/examples/cpp/encode/Makefile.in @@ -0,0 +1,676 @@ +# Makefile.in generated by automake 1.16.5 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2021 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# FLAC - Free Lossless Audio Codec +# Copyright (C) 2001-2009 Josh Coalson +# Copyright (C) 2011-2023 Xiph.Org Foundation +# +# This file is part the FLAC project. 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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 encode a WAVE file to a FLAC + * file. It only supports 16-bit stereo files in canonical WAVE format. + * + * 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 <string.h> + +#include "FLAC++/metadata.h" +#include "FLAC++/encoder.h" +#include "share/compat.h" + +#include <cstring> + +class OurEncoder: public FLAC::Encoder::File { +public: + OurEncoder(): FLAC::Encoder::File() { } +protected: + virtual void progress_callback(FLAC__uint64 bytes_written, FLAC__uint64 samples_written, uint32_t frames_written, uint32_t total_frames_estimate); +}; + +#define READSIZE 1024 + +static uint32_t total_samples = 0; /* can use a 32-bit number due to WAVE size limitations */ +static FLAC__byte buffer[READSIZE/*samples*/ * 2/*bytes_per_sample*/ * 2/*channels*/]; /* we read the WAVE data into here */ +static FLAC__int32 pcm[READSIZE/*samples*/ * 2/*channels*/]; + +int main(int argc, char *argv[]) +{ + bool ok = true; + OurEncoder encoder; + FLAC__StreamEncoderInitStatus init_status; + FLAC__StreamMetadata *metadata[2]; + FLAC__StreamMetadata_VorbisComment_Entry entry; + FILE *fin; + uint32_t sample_rate = 0; + uint32_t channels = 0; + uint32_t bps = 0; + + if(argc != 3) { + fprintf(stderr, "usage: %s infile.wav outfile.flac\n", argv[0]); + return 1; + } + + if((fin = fopen(argv[1], "rb")) == NULL) { + fprintf(stderr, "ERROR: opening %s for output\n", argv[1]); + return 1; + } + + /* read wav header and validate it */ + if( + fread(buffer, 1, 44, fin) != 44 || + memcmp(buffer, "RIFF", 4) || + memcmp(buffer+8, "WAVEfmt \020\000\000\000\001\000\002\000", 16) || + memcmp(buffer+32, "\004\000\020\000data", 8) + ) { + fprintf(stderr, "ERROR: invalid/unsupported WAVE file, only 16bps stereo WAVE in canonical form allowed\n"); + fclose(fin); + return 1; + } + sample_rate = ((((((uint32_t)buffer[27] << 8) | buffer[26]) << 8) | buffer[25]) << 8) | buffer[24]; + channels = 2; + bps = 16; + total_samples = (((((((uint32_t)buffer[43] << 8) | buffer[42]) << 8) | buffer[41]) << 8) | buffer[40]) / 4; + + /* check the encoder */ + if(!encoder) { + fprintf(stderr, "ERROR: allocating encoder\n"); + fclose(fin); + return 1; + } + + ok &= encoder.set_verify(true); + ok &= encoder.set_compression_level(5); + ok &= encoder.set_channels(channels); + ok &= encoder.set_bits_per_sample(bps); + ok &= encoder.set_sample_rate(sample_rate); + ok &= encoder.set_total_samples_estimate(total_samples); + + /* now add some metadata; we'll add some tags and a padding block */ + if(ok) { + if( + (metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL || + (metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL || + /* there are many tag (vorbiscomment) functions but these are convenient for this particular use: */ + !FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ARTIST", "Some Artist") || + !FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, /*copy=*/false) || /* copy=false: let metadata object take control of entry's allocated string */ + !FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "YEAR", "1984") || + !FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, /*copy=*/false) + ) { + fprintf(stderr, "ERROR: out of memory or tag error\n"); + ok = false; + } else { + + metadata[1]->length = 1234; /* set the padding length */ + + ok = encoder.set_metadata(metadata, 2); + + } + } + + /* initialize encoder */ + if(ok) { + init_status = encoder.init(argv[2]); + if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) { + fprintf(stderr, "ERROR: initializing encoder: %s\n", FLAC__StreamEncoderInitStatusString[init_status]); + ok = false; + } + } + + /* read blocks of samples from WAVE file and feed to encoder */ + if(ok) { + size_t left = (size_t)total_samples; + while(ok && left) { + size_t need = (left>READSIZE? (size_t)READSIZE : (size_t)left); + if(fread(buffer, channels*(bps/8), need, fin) != need) { + fprintf(stderr, "ERROR: reading from WAVE file\n"); + ok = false; + } + else { + /* convert the packed little-endian 16-bit PCM samples from WAVE into an interleaved FLAC__int32 buffer for libFLAC */ + size_t i; + for(i = 0; i < need*channels; i++) { + /* inefficient but simple and works on big- or little-endian machines */ + pcm[i] = (FLAC__int32)(((FLAC__int16)(FLAC__int8)buffer[2*i+1] << 8) | (FLAC__int16)buffer[2*i]); + } + /* feed samples to encoder */ + ok = encoder.process_interleaved(pcm, need); + } + left -= need; + } + } + + ok &= encoder.finish(); + + fprintf(stderr, "encoding: %s\n", ok? "succeeded" : "FAILED"); + fprintf(stderr, " state: %s\n", encoder.get_state().resolved_as_cstring(encoder)); + + /* now that encoding is finished, the metadata can be freed */ + FLAC__metadata_object_delete(metadata[0]); + FLAC__metadata_object_delete(metadata[1]); + + fclose(fin); + + return 0; +} + +void OurEncoder::progress_callback(FLAC__uint64 bytes_written, FLAC__uint64 samples_written, uint32_t frames_written, uint32_t total_frames_estimate) +{ + fprintf(stderr, "wrote %" PRIu64 " bytes, %" PRIu64 "/%u samples, %u/%u frames\n", bytes_written, samples_written, total_samples, frames_written, total_frames_estimate); +} |