/* flac - Command-line FLAC encoder/decoder
* Copyright (C) 2000-2009 Josh Coalson
* Copyright (C) 2011-2016 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 <errno.h>
#include <math.h> /* for floor() */
#include <stdio.h> /* for FILE etc. */
#include <string.h> /* for strcmp(), strerror() */
#include "FLAC/all.h"
#include "share/grabbag.h"
#include "share/replaygain_synthesis.h"
#include "share/compat.h"
#include "decode.h"
typedef struct {
#if FLAC__HAS_OGG
FLAC__bool is_ogg;
FLAC__bool use_first_serial_number;
long serial_number;
#endif
FileFormat format;
FLAC__bool treat_warnings_as_errors;
FLAC__bool continue_through_decode_errors;
FLAC__bool channel_map_none;
struct {
replaygain_synthesis_spec_t spec;
FLAC__bool apply; /* 'spec.apply' is just a request; this 'apply' means we actually parsed the RG tags and are ready to go */
double scale;
DitherContext dither_context;
} replaygain;
FLAC__bool test_only;
FLAC__bool analysis_mode;
analysis_options aopts;
utils__SkipUntilSpecification *skip_specification;
utils__SkipUntilSpecification *until_specification; /* a canonicalized value of 0 mean end-of-stream (i.e. --until=-0) */
utils__CueSpecification *cue_specification;
const char *inbasefilename;
const char *infilename;
const char *outfilename;
FLAC__uint64 samples_processed;
unsigned frame_counter;
FLAC__bool abort_flag;
FLAC__bool aborting_due_to_until; /* true if we intentionally abort decoding prematurely because we hit the --until point */
FLAC__bool aborting_due_to_unparseable; /* true if we abort decoding because we hit an unparseable frame */
FLAC__bool error_callback_suppress_messages; /* turn on to prevent repeating messages from the error callback */
FLAC__bool iff_headers_need_fixup;
FLAC__bool is_big_endian;
FLAC__bool is_unsigned_samples;
FLAC__bool got_stream_info;
FLAC__bool has_md5sum;
FLAC__uint64 total_samples;
unsigned bps;
unsigned channels;
unsigned sample_rate;
FLAC__uint32 channel_mask;
/* these are used only in analyze mode */
FLAC__uint64 decode_position;
FLAC__StreamDecoder *decoder;
FILE *fout;
foreign_metadata_t *foreign_metadata; /* NULL unless --keep-foreign-metadata requested */
FLAC__off_t fm_offset1, fm_offset2, fm_offset3;
} DecoderSession;
static FLAC__bool is_big_endian_host_;
/*
* local routines
*/
static FLAC__bool DecoderSession_construct(DecoderSession *d, FLAC__bool is_ogg, FLAC__bool use_first_serial_number, long serial_number, FileFormat format, FLAC__bool treat_warnings_as_errors, FLAC__bool continue_through_decode_errors, FLAC__bool channel_map_none, replaygain_synthesis_spec_t replaygain_synthesis_spec, FLAC__bool analysis_mode, analysis_options aopts, utils__SkipUntilSpecification *skip_specification, utils__SkipUntilSpecification *until_specification, utils__CueSpecification *cue_specification, foreign_metadata_t *foreign_metadata, const char *infilename, const char *outfilename);
static void DecoderSession_destroy(DecoderSession *d, FLAC__bool error_occurred);
static FLAC__bool DecoderSession_init_decoder(DecoderSession *d, const char *infilename);
static FLAC__bool DecoderSession_process(DecoderSession *d);
static int DecoderSession_finish_ok(DecoderSession *d);
static int DecoderSession_finish_error(DecoderSession *d);
static FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input);
static FLAC__bool write_iff_headers(FILE *f, DecoderSession *decoder_session, FLAC__uint64 samples);
static FLAC__bool write_riff_wave_fmt_chunk_body(FILE *f, FLAC__bool is_waveformatextensible, unsigned bps, unsigned channels, unsigned sample_rate, FLAC__uint32 channel_mask);
static FLAC__bool write_aiff_form_comm_chunk(FILE *f, FLAC__uint64 samples, unsigned bps, unsigned channels, unsigned sample_rate);
static FLAC__bool write_little_endian_uint16(FILE *f, FLAC__uint16 val);
static FLAC__bool write_little_endian_uint32(FILE *f, FLAC__uint32 val);
static FLAC__bool write_little_endian_uint64(FILE *f, FLAC__uint64 val);
static FLAC__bool write_big_endian_uint16(FILE *f, FLAC__uint16 val);
static FLAC__bool write_big_endian_uint32(FILE *f, FLAC__uint32 val);
static FLAC__bool write_sane_extended(FILE *f, unsigned val);
static FLAC__bool fixup_iff_headers(DecoderSession *d);
static FLAC__StreamDecoderWriteStatus write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
static void metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
static void error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
static void print_error_with_init_status(const DecoderSession *d, const char *message, FLAC__StreamDecoderInitStatus init_status);
static void print_error_with_state(const DecoderSession *d, const char *message);
static void print_stats(const DecoderSession *decoder_session);
/*
* public routines
*/
int flac__decode_file(const char *infilename, const char *outfilename, FLAC__bool analysis_mode, analysis_options aopts, decode_options_t options)
{
DecoderSession decoder_session;
FLAC__ASSERT(
options.format == FORMAT_WAVE ||
options.format == FORMAT_WAVE64 ||
options.format == FORMAT_RF64 ||
options.format == FORMAT_AIFF ||
options.format == FORMAT_AIFF_C ||
options.format == FORMAT_RAW
);
if(options.format == FORMAT_RAW) {
decoder_session.is_big_endian = options.format_options.raw.is_big_endian;
decoder_session.is_unsigned_samples = options.format_options.raw.is_unsigned_samples;
}
if(!
DecoderSession_construct(
&decoder_session,
#if FLAC__HAS_OGG
options.is_ogg,
options.use_first_serial_number,
options.serial_number,
#else
/*is_ogg=*/false,
/*use_first_serial_number=*/false,
/*serial_number=*/0,
#endif
options.format,
options.treat_warnings_as_errors,
options.continue_through_decode_errors,
options.channel_map_none,
options.replaygain_synthesis_spec,
analysis_mode,
aopts,
&options.skip_specification,
&options.until_specification,
options.has_cue_specification? &options.cue_specification : 0,
options.format == FORMAT_RAW? NULL : options.format_options.iff.foreign_metadata,
infilename,
outfilename
)
)
return 1;
stats_new_file();
if(!DecoderSession_init_decoder(&decoder_session, infilename))
return DecoderSession_finish_error(&decoder_session);
if(!DecoderSession_process(&decoder_session))
return DecoderSession_finish_error(&decoder_session);
return DecoderSession_finish_ok(&decoder_session);
}
FLAC__bool DecoderSession_construct(DecoderSession *d, FLAC__bool is_ogg, FLAC__bool use_first_serial_number, long serial_number, FileFormat format, FLAC__bool treat_warnings_as_errors, FLAC__bool continue_through_decode_errors, FLAC__bool channel_map_none, replaygain_synthesis_spec_t replaygain_synthesis_spec, FLAC__bool analysis_mode, analysis_options aopts, utils__SkipUntilSpecification *skip_specification, utils__SkipUntilSpecification *until_specification, utils__CueSpecification *cue_specification, foreign_metadata_t *foreign_metadata, const char *infilename, const char *outfilename)
{
#if FLAC__HAS_OGG
d->is_ogg = is_ogg;
d->use_first_serial_number = use_first_serial_number;
d->serial_number = serial_number;
#else
(void)is_ogg;
(void)use_first_serial_number;
(void)serial_number;
#endif
d->format = format;
d->treat_warnings_as_errors = treat_warnings_as_errors;
d->continue_through_decode_errors = continue_through_decode_errors;
d->channel_map_none = channel_map_none;
d->replaygain.spec = replaygain_synthesis_spec;
d->replaygain.apply = false;
d->replaygain.scale = 0.0;
/* d->replaygain.dither_context gets initialized later once we know the sample resolution */
d->test_only = (0 == outfilename);
d->analysis_mode = analysis_mode;
d->aopts = aopts;
d->skip_specification = skip_specification;
d->until_specification = until_specification;
d->cue_specification = cue_specification;
d->inbasefilename = grabbag__file_get_basename(infilename);
d->infilename = infilename;
d->outfilename = outfilename;
d->samples_processed = 0;
d->frame_counter = 0;
d->abort_flag = false;
d->aborting_due_to_until = false;
d->aborting_due_to_unparseable = false;
d->error_callback_suppress_messages = false;
d->iff_headers_need_fixup = false;
d->total_samples = 0;
d->got_stream_info = false;
d->has_md5sum = false;
d->bps = 0;
d->channels = 0;
d->sample_rate = 0;
d->channel_mask = 0;
d->decode_position = 0;
d->decoder = 0;
d->fout = 0; /* initialized with an open file later if necessary */
d->foreign_metadata = foreign_metadata;
FLAC__ASSERT(!(d->test_only && d->analysis_mode));
if(!d->test_only) {
if(0 == strcmp(outfilename, "-")) {
d->fout = grabbag__file_get_binary_stdout();
}
else {
if(0 == (d->fout = flac_fopen(outfilename, "wb"))) {
flac__utils_printf(stderr, 1, "%s: ERROR: can't open output file %s: %s\n", d->inbasefilename, outfilename, strerror(errno));
DecoderSession_destroy(d, /*error_occurred=*/true);
return false;
}
}
}
if(analysis_mode)
flac__analyze_init(aopts);
return true;
}
void DecoderSession_destroy(DecoderSession *d, FLAC__bool error_occurred)
{
if(0 != d->fout && d->fout != stdout) {
#ifdef _WIN32
if(!error_occurred) {
FLAC__off_t written_size = ftello(d->fout);
if(written_size > 0) {
HANDLE fh = CreateFile_utf8(d->outfilename, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(fh != INVALID_HANDLE_VALUE) {
if(GetFileType(fh) == FILE_TYPE_DISK) {
LARGE_INTEGER size;
size.QuadPart = written_size;
if(SetFilePointerEx(fh, size, NULL, FILE_CURRENT)) /* correct the file size */
SetEndOfFile(fh);
}
CloseHandle(fh);
}
}
}
#endif
fclose(d->fout);
if(error_occurred)
flac_unlink(d->outfilename);
}
}
FLAC__bool DecoderSession_init_decoder(DecoderSession *decoder_session, const char *infilename)
{
FLAC__StreamDecoderInitStatus init_status;
FLAC__uint32 test = 1;
is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true;
if(!decoder_session->analysis_mode && !decoder_session->test_only && decoder_session->foreign_metadata) {
const char *error;
if(!flac__foreign_metadata_read_from_flac(decoder_session->foreign_metadata, infilename, &error)) {
flac__utils_printf(stderr, 1, "%s: ERROR reading foreign metadata: %s\n", decoder_session->inbasefilename, error);
return false;
}
}
decoder_session->decoder = FLAC__stream_decoder_new();
if(0 == decoder_session->decoder) {
flac__utils_printf(stderr, 1, "%s: ERROR creating the decoder instance\n", decoder_session->inbasefilename);
return false;
}
FLAC__stream_decoder_set_md5_checking(decoder_session->decoder, true);
if (0 != decoder_session->cue_specification)
FLAC__stream_decoder_set_metadata_respond(decoder_session->decoder, FLAC__METADATA_TYPE_CUESHEET);
if (decoder_session->replaygain.spec.apply || !decoder_session->channel_map_none)
FLAC__stream_decoder_set_metadata_respond(decoder_session->decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
#if FLAC__HAS_OGG
if(decoder_session->is_ogg) {
if(!decoder_session->use_first_serial_number)
FLAC__stream_decoder_set_ogg_serial_number(decoder_session->decoder, decoder_session->serial_number);
init_status = FLAC__stream_decoder_init_ogg_file(decoder_session->decoder, strcmp(infilename, "-")? infilename : 0, write_callback, metadata_callback, error_callback, /*client_data=*/decoder_session);
}
else
#endif
{
init_status = FLAC__stream_decoder_init_file(decoder_session->decoder, strcmp(infilename, "-")? infilename : 0, write_callback, metadata_callback, error_callback, /*client_data=*/decoder_session);
}
if(init_status != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
print_error_with_init_status(decoder_session, "ERROR initializing decoder", init_status);
return false;
}
return true;
}
FLAC__bool DecoderSession_process(DecoderSession *d)
{
if(!FLAC__stream_decoder_process_until_end_of_metadata(d->decoder)) {
flac__utils_printf(stderr, 2, "\n");
print_error_with_state(d, "ERROR while decoding metadata");
return false;
}
if(FLAC__stream_decoder_get_state(d->decoder) > FLAC__STREAM_DECODER_END_OF_STREAM) {
flac__utils_printf(stderr, 2, "\n");
print_error_with_state(d, "ERROR during metadata decoding");
if(!d->continue_through_decode_errors)
return false;
}
if(d->abort_flag)
return false;
/* set channel mapping */
/* currently FLAC order matches SMPTE/WAVEFORMATEXTENSIBLE order, so no reordering is necessary; see encode.c */
/* only the channel mask must be set if it was not already picked up from the WAVEFORMATEXTENSIBLE_CHANNEL_MASK tag */
if(!d->channel_map_none && d->channel_mask == 0) {
if(d->channels == 1) {
d->channel_mask = 0x0004;
}
else if(d->channels == 2) {
d->channel_mask = 0x0003;
}
else if(d->channels == 3) {
d->channel_mask = 0x0007;
}
else if(d->channels == 4) {
d->channel_mask = 0x0033;
}
else if(d->channels == 5) {
d->channel_mask = 0x0607;
}
else if(d->channels == 6) {
d->channel_mask = 0x060f;
}
else if(d->channels == 7) {
d->channel_mask = 0x070f;
}
else if(d->channels == 8) {
d->channel_mask = 0x063f;
}
}
#ifdef _WIN32
if(!d->analysis_mode && !d->test_only && d->total_samples > 0 && d->fout != stdout) {
HANDLE fh = CreateFile_utf8(d->outfilename, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(fh != INVALID_HANDLE_VALUE) {
if (GetFileType(fh) == FILE_TYPE_DISK) {
LARGE_INTEGER size;
size.QuadPart = d->total_samples * d->channels * ((d->bps+7)/8);
if(d->format != FORMAT_RAW) {
size.QuadPart += 512;
if(d->foreign_metadata) {
size_t i;
for(i = d->format==FORMAT_RF64?2:1; i < d->foreign_metadata->num_blocks; i++) {
if(i != d->foreign_metadata->format_block && i != d->foreign_metadata->audio_block)
size.QuadPart += d->foreign_metadata->blocks[i].size;
}
}
}
if(SetFilePointerEx(fh, size, NULL, FILE_CURRENT)) /* tell filesystem the expected filesize to eliminate fragmentation */
SetEndOfFile(fh);
}
CloseHandle(fh);
}
}
#endif
/* write the WAVE/AIFF headers if necessary */
if(!d->analysis_mode && !d->test_only && d->format != FORMAT_RAW) {
if(!write_iff_headers(d->fout, d, d->total_samples)) {
d->abort_flag = true;
return false;
}
}
if(d->skip_specification->value.samples > 0) {
const FLAC__uint64 skip = (FLAC__uint64)d->skip_specification->value.samples;
if(!FLAC__stream_decoder_seek_absolute(d->decoder, skip)) {
print_error_with_state(d, "ERROR seeking while skipping bytes");
return false;
}
}
if(!FLAC__stream_decoder_process_until_end_of_stream(d->decoder) && !d->aborting_due_to_until) {
flac__utils_printf(stderr, 2, "\n");
print_error_with_state(d, "ERROR while decoding data");
if(!d->continue_through_decode_errors)
return false;
}
if(
(d->abort_flag && !(d->aborting_due_to_until || d->continue_through_decode_errors)) ||
(FLAC__stream_decoder_get_state(d->decoder) > FLAC__STREAM_DECODER_END_OF_STREAM && !d->aborting_due_to_until)
) {
flac__utils_printf(stderr, 2, "\n");
print_error_with_state(d, "ERROR during decoding");
return false;
}
/* write padding bytes for alignment if necessary */
if(!d->analysis_mode && !d->test_only && d->format != FORMAT_RAW) {
const FLAC__uint64 data_size = d->total_samples * d->channels * ((d->bps+7)/8);
unsigned padding;
if(d->format != FORMAT_WAVE64) {
padding = (unsigned)(data_size & 1);
}
else {
/* 8-byte alignment for Wave64 */
padding = (8 - (unsigned)(data_size & 7)) & 7;
}
for( ; padding > 0; --padding) {
if(flac__utils_fwrite("\000", 1, 1, d->fout) != 1) {
print_error_with_state(
d,
d->format == FORMAT_WAVE? "ERROR writing pad byte to WAVE data chunk" :
d->format == FORMAT_WAVE64? "ERROR writing pad bytes to WAVE64 data chunk" :
d->format == FORMAT_RF64? "ERROR writing pad byte to RF64 data chunk" :
"ERROR writing pad byte to AIFF SSND chunk"
);
return false;
}
}
}
return true;
}
int DecoderSession_finish_ok(DecoderSession *d)
{
FLAC__bool ok = true, md5_failure = false;
if(d->decoder) {
md5_failure = !FLAC__stream_decoder_finish(d->decoder) && !d->aborting_due_to_until;
print_stats(d);
FLAC__stream_decoder_delete(d->decoder);
}
if(d->analysis_mode)
flac__analyze_finish(d->aopts);
if(md5_failure) {
stats_print_name(1, d->inbasefilename);
flac__utils_printf(stderr, 1, "ERROR, MD5 signature mismatch\n");
ok = d->continue_through_decode_errors;
}
else {
if(!d->got_stream_info) {
stats_print_name(1, d->inbasefilename);
flac__utils_printf(stderr, 1, "WARNING, cannot check MD5 signature since there was no STREAMINFO\n");
ok = !d->treat_warnings_as_errors;
}
else if(!d->has_md5sum) {
stats_print_name(1, d->inbasefilename);
flac__utils_printf(stderr, 1, "WARNING, cannot check MD5 signature since it was unset in the STREAMINFO\n");
ok = !d->treat_warnings_as_errors;
}
stats_print_name(2, d->inbasefilename);
flac__utils_printf(stderr, 2, "%s \n", d->test_only? "ok ":d->analysis_mode?"done ":"done");
}
DecoderSession_destroy(d, /*error_occurred=*/!ok);
if(!d->analysis_mode && !d->test_only && d->format != FORMAT_RAW) {
if(d->iff_headers_need_fixup || (!d->got_stream_info && strcmp(d->outfilename, "-"))) {
if(!fixup_iff_headers(d))
return 1;
}
if(d->foreign_metadata) {
const char *error;
if(!flac__foreign_metadata_write_to_iff(d->foreign_metadata, d->infilename, d->outfilename, d->fm_offset1, d->fm_offset2, d->fm_offset3, &error)) {
flac__utils_printf(stderr, 1, "ERROR updating foreign metadata from %s to %s: %s\n", d->infilename, d->outfilename, error);
return 1;
}
}
}
return ok? 0 : 1;
}
int DecoderSession_finish_error(DecoderSession *d)
{
if(d->decoder) {
(void)FLAC__stream_decoder_finish(d->decoder);
FLAC__stream_decoder_delete(d->decoder);
}
if(d->analysis_mode)
flac__analyze_finish(d->aopts);
DecoderSession_destroy(d, /*error_occurred=*/true);
return 1;
}
FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input)
{
/* convert from mm:ss.sss to sample number if necessary */
flac__utils_canonicalize_skip_until_specification(spec, sample_rate);
/* special case: if "--until=-0", use the special value '0' to mean "end-of-stream" */
if(spec->is_relative && spec->value.samples == 0) {
spec->is_relative = false;
return true;
}
/* in any other case the total samples in the input must be known */
if(total_samples_in_input == 0) {
flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --until when FLAC metadata has total sample count of 0\n", inbasefilename);
return false;
}
FLAC__ASSERT(spec->value_is_samples);
/* convert relative specifications to absolute */
if(spec->is_relative) {
if(spec->value.samples <= 0)
spec->value.samples += (FLAC__int64)total_samples_in_input;
else
spec->value.samples += skip;
spec->is_relative = false;
}
/* error check */
if(spec->value.samples < 0) {
flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before beginning of input\n", inbasefilename);
return false;
}
if((FLAC__uint64)spec->value.samples <= skip) {
flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before --skip point\n", inbasefilename);
return false;
}
if((FLAC__uint64)spec->value.samples > total_samples_in_input) {
flac__utils_printf(stderr, 1, "%s: ERROR, --until value is after end of input\n", inbasefilename);
return false;
}
return true;
}
FLAC__bool write_iff_headers(FILE *f, DecoderSession *decoder_session, FLAC__uint64 samples)
{
const FileFormat format = decoder_session->format;
const char *fmt_desc =
format==FORMAT_WAVE? "WAVE" :
format==FORMAT_WAVE64? "Wave64" :
format==FORMAT_RF64? "RF64" :
"AIFF";
const FLAC__bool is_waveformatextensible =
(format == FORMAT_WAVE || format == FORMAT_WAVE64 || format == FORMAT_RF64) &&
(
(decoder_session->channel_mask != 0 && decoder_session->channel_mask != 0x0004 && decoder_session->channel_mask != 0x0003) ||
decoder_session->bps%8 ||
decoder_session->channels > 2
);
const FLAC__uint64 data_size = samples * decoder_session->channels * ((decoder_session->bps+7)/8);
const FLAC__uint64 aligned_data_size =
format == FORMAT_WAVE64?
(data_size+7) & (~(FLAC__uint64)7) :
(data_size+1) & (~(FLAC__uint64)1);
FLAC__uint64 iff_size;
unsigned foreign_metadata_size = 0; /* size of all non-audio non-fmt/COMM foreign metadata chunks */
foreign_metadata_t *fm = decoder_session->foreign_metadata;
size_t i;
FLAC__ASSERT(
format == FORMAT_WAVE ||
format == FORMAT_WAVE64 ||
format == FORMAT_RF64 ||
format == FORMAT_AIFF ||
format == FORMAT_AIFF_C
);
if(samples == 0) {
if(f == stdout) {
flac__utils_printf(stderr, 1, "%s: WARNING, don't have accurate sample count available for %s header.\n", decoder_session->inbasefilename, fmt_desc);
flac__utils_printf(stderr, 1, " Generated %s file will have a data chunk size of 0. Try\n", fmt_desc);
flac__utils_printf(stderr, 1, " decoding directly to a file instead.\n");
if(decoder_session->treat_warnings_as_errors)
return false;
}
else {
decoder_session->iff_headers_need_fixup = true;
}
}
if(fm) {
FLAC__ASSERT(fm->format_block);
FLAC__ASSERT(fm->audio_block);
FLAC__ASSERT(fm->format_block < fm->audio_block);
/* calc foreign metadata size; we always skip the first chunk, ds64 chunk, format chunk, and sound chunk since we write our own */
for(i = format==FORMAT_RF64?2:1; i < fm->num_blocks; i++) {
if(i != fm->format_block && i != fm->audio_block)
foreign_metadata_size += fm->blocks[i].size;
}
}
if(samples == 0)
iff_size = 0;
else if(format == FORMAT_WAVE || format == FORMAT_RF64)
/* 4 for WAVE form bytes */
/* +{36,0} for ds64 chunk */
/* +8+{40,16} for fmt chunk header and body */
/* +8 for data chunk header */
iff_size = 4 + (format==FORMAT_RF64?36:0) + 8+(is_waveformatextensible?40:16) + 8 + foreign_metadata_size + aligned_data_size;
else if(format == FORMAT_WAVE64)
/* 16+8 for RIFF GUID and size field */
/* +16 for WAVE GUID */
/* +16+8+{40,16} for fmt chunk header (GUID and size field) and body */
/* +16+8 for data chunk header (GUID and size field) */
iff_size = 16+8 + 16 + 16+8+(is_waveformatextensible?40:16) + 16+8 + foreign_metadata_size + aligned_data_size;
else /* AIFF */
iff_size = 46 + foreign_metadata_size + aligned_data_size;
if(format != FORMAT_WAVE64 && format != FORMAT_RF64 && iff_size >= 0xFFFFFFF4) {
flac__utils_printf(stderr, 1, "%s: ERROR: stream is too big to fit in a single %s file\n", decoder_session->inbasefilename, fmt_desc);
return false;
}
if(format == FORMAT_WAVE || format == FORMAT_WAVE64 || format == FORMAT_RF64) {
/* RIFF header */
switch(format) {
case FORMAT_WAVE:
if(flac__utils_fwrite("RIFF", 1, 4, f) != 4)
return false;
if(!write_little_endian_uint32(f, (FLAC__uint32)iff_size)) /* filesize-8 */
return false;
if(flac__utils_fwrite("WAVE", 1, 4, f) != 4)
return false;
break;
case FORMAT_WAVE64:
/* RIFF GUID 66666972-912E-11CF-A5D6-28DB04C10000 */
if(flac__utils_fwrite("\x72\x69\x66\x66\x2E\x91\xCF\x11\xA5\xD6\x28\xDB\x04\xC1\x00\x00", 1, 16, f) != 16)
return false;
if(!write_little_endian_uint64(f, iff_size))
return false;
/* WAVE GUID 65766177-ACF3-11D3-8CD1-00C04F8EDB8A */
if(flac__utils_fwrite("\x77\x61\x76\x65\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A", 1, 16, f) != 16)
return false;
break;
case FORMAT_RF64:
if(flac__utils_fwrite("RF64", 1, 4, f) != 4)
return false;
if(!write_little_endian_uint32(f, 0xffffffff))
return false;
if(flac__utils_fwrite("WAVE", 1, 4, f) != 4)
return false;
break;
default:
return false;
}
/* ds64 chunk for RF64 */
if(format == FORMAT_RF64) {
if(flac__utils_fwrite("ds64", 1, 4, f) != 4)
return false;
if(!write_little_endian_uint32(f, 28)) /* chunk size */
return false;
if(!write_little_endian_uint64(f, iff_size))
return false;
if(!write_little_endian_uint64(f, data_size))
return false;
if(!write_little_endian_uint64(f, samples)) /*@@@@@@ correct? */
return false;
if(!write_little_endian_uint32(f, 0)) /* table size */
return false;
}
decoder_session->fm_offset1 = ftello(f);
if(fm) {
/* seek forward to {allocate} or {skip over already-written chunks} before "fmt " */
for(i = format==FORMAT_RF64?2:1; i < fm->format_block; i++) {
if(fseeko(f, fm->blocks[i].size, SEEK_CUR) < 0) {
flac__utils_printf(stderr, 1, "%s: ERROR: allocating/skipping foreign metadata before \"fmt \"\n", decoder_session->inbasefilename);
return false;
}
}
}
if(format != FORMAT_WAVE64) {
if(flac__utils_fwrite("fmt ", 1, 4, f) != 4)
return false;
if(!write_little_endian_uint32(f, is_waveformatextensible? 40 : 16)) /* chunk size */
return false;
}
else { /* Wave64 */
/* fmt GUID 20746D66-ACF3-11D3-8CD1-00C04F8EDB8A */
if(flac__utils_fwrite("\x66\x6D\x74\x20\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A", 1, 16, f) != 16)
return false;
/* chunk size (+16+8 for GUID and size fields) */
if(!write_little_endian_uint64(f, 16+8+(is_waveformatextensible?40:16)))
return false;
}
if(!write_riff_wave_fmt_chunk_body(f, is_waveformatextensible, decoder_session->bps, decoder_session->channels, decoder_session->sample_rate, decoder_session->channel_mask))
return false;
decoder_session->fm_offset2 = ftello(f);
if(fm) {
/* seek forward to {allocate} or {skip over already-written chunks} after "fmt " but before "data" */
for(i = fm->format_block+1; i < fm->audio_block; i++) {
if(fseeko(f, fm->blocks[i].size, SEEK_CUR) < 0) {
flac__utils_printf(stderr, 1, "%s: ERROR: allocating/skipping foreign metadata after \"fmt \"\n", decoder_session->inbasefilename);
return false;
}
}
}
if(format != FORMAT_WAVE64) {
if(flac__utils_fwrite("data", 1, 4, f) != 4)
return false;
if(!write_little_endian_uint32(f, format==FORMAT_RF64? 0xffffffff : (FLAC__uint32)data_size))
return false;
}
else { /* Wave64 */
/* data GUID 61746164-ACF3-11D3-8CD1-00C04F8EDB8A */
if(flac__utils_fwrite("\x64\x61\x74\x61\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A", 1, 16, f) != 16)
return false;
/* +16+8 for GUID and size fields */
if(!write_little_endian_uint64(f, 16+8 + data_size))
return false;
}
decoder_session->fm_offset3 = ftello(f) + aligned_data_size;
}
else {
if(flac__utils_fwrite("FORM", 1, 4, f) != 4)
return false;
if(!write_big_endian_uint32(f, (FLAC__uint32)iff_size)) /* filesize-8 */
return false;
if(flac__utils_fwrite("AIFF", 1, 4, f) != 4)
return false;
decoder_session->fm_offset1 = ftello(f);
if(fm) {
/* seek forward to {allocate} or {skip over already-written chunks} before "COMM" */
for(i = 1; i < fm->format_block; i++) {
if(fseeko(f, fm->blocks[i].size, SEEK_CUR) < 0) {
flac__utils_printf(stderr, 1, "%s: ERROR: allocating/skipping foreign metadata before \"COMM\"\n", decoder_session->inbasefilename);
return false;
}
}
}
if(!write_aiff_form_comm_chunk(f, samples, decoder_session->bps, decoder_session->channels, decoder_session->sample_rate))
return false;
decoder_session->fm_offset2 = ftello(f);
if(fm) {
/* seek forward to {allocate} or {skip over already-written chunks} after "COMM" but before "SSND" */
for(i = fm->format_block+1; i < fm->audio_block; i++) {
if(fseeko(f, fm->blocks[i].size, SEEK_CUR) < 0) {
flac__utils_printf(stderr, 1, "%s: ERROR: allocating/skipping foreign metadata after \"COMM\"\n", decoder_session->inbasefilename);
return false;
}
}
}
if(flac__utils_fwrite("SSND", 1, 4, f) != 4)
return false;
if(!write_big_endian_uint32(f, (FLAC__uint32)data_size + 8)) /* data size */
return false;
if(!write_big_endian_uint32(f, 0/*offset_size*/))
return false;
if(!write_big_endian_uint32(f, 0/*block_size*/))
return false;
decoder_session->fm_offset3 = ftello(f) + aligned_data_size;
}
return true;
}
FLAC__bool write_riff_wave_fmt_chunk_body(FILE *f, FLAC__bool is_waveformatextensible, unsigned bps, unsigned channels, unsigned sample_rate, FLAC__uint32 channel_mask)
{
if(!write_little_endian_uint16(f, (FLAC__uint16)(is_waveformatextensible? 65534 : 1))) /* compression code */
return false;
if(!write_little_endian_uint16(f, (FLAC__uint16)channels))
return false;
if(!write_little_endian_uint32(f, sample_rate))
return false;
if(!write_little_endian_uint32(f, sample_rate * channels * ((bps+7) / 8)))
return false;
if(!write_little_endian_uint16(f, (FLAC__uint16)(channels * ((bps+7) / 8)))) /* block align */
return false;
if(!write_little_endian_uint16(f, (FLAC__uint16)(((bps+7)/8)*8))) /* bits per sample */
return false;
if(is_waveformatextensible) {
if(!write_little_endian_uint16(f, (FLAC__uint16)22)) /* cbSize */
return false;
if(!write_little_endian_uint16(f, (FLAC__uint16)bps)) /* validBitsPerSample */
return false;
if(!write_little_endian_uint32(f, channel_mask))
return false;
/* GUID = {0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} */
if(flac__utils_fwrite("\x01\x00\x00\x00\x00\x00\x10\x00\x80\x00\x00\xaa\x00\x38\x9b\x71", 1, 16, f) != 16)
return false;
}
return true;
}
FLAC__bool write_aiff_form_comm_chunk(FILE *f, FLAC__uint64 samples, unsigned bps, unsigned channels, unsigned sample_rate)
{
FLAC__ASSERT(samples <= 0xffffffff);
if(flac__utils_fwrite("COMM", 1, 4, f) != 4)
return false;
if(!write_big_endian_uint32(f, 18)) /* chunk size = 18 */
return false;
if(!write_big_endian_uint16(f, (FLAC__uint16)channels))
return false;
if(!write_big_endian_uint32(f, (FLAC__uint32)samples))
return false;
if(!write_big_endian_uint16(f, (FLAC__uint16)bps))
return false;
if(!write_sane_extended(f, sample_rate))
return false;
return true;
}
FLAC__bool write_little_endian_uint16(FILE *f, FLAC__uint16 val)
{
FLAC__byte *b = (FLAC__byte*)(&val);
if(is_big_endian_host_) {
FLAC__byte tmp;
tmp = b[1]; b[1] = b[0]; b[0] = tmp;
}
return flac__utils_fwrite(b, 1, 2, f) == 2;
}
FLAC__bool write_little_endian_uint32(FILE *f, FLAC__uint32 val)
{
FLAC__byte *b = (FLAC__byte*)(&val);
if(is_big_endian_host_) {
FLAC__byte tmp;
tmp = b[3]; b[3] = b[0]; b[0] = tmp;
tmp = b[2]; b[2] = b[1]; b[1] = tmp;
}
return flac__utils_fwrite(b, 1, 4, f) == 4;
}
FLAC__bool write_little_endian_uint64(FILE *f, FLAC__uint64 val)
{
FLAC__byte *b = (FLAC__byte*)(&val);
if(is_big_endian_host_) {
FLAC__byte tmp;
tmp = b[7]; b[7] = b[0]; b[0] = tmp;
tmp = b[6]; b[6] = b[1]; b[1] = tmp;
tmp = b[5]; b[5] = b[2]; b[2] = tmp;
tmp = b[4]; b[4] = b[3]; b[3] = tmp;
}
return flac__utils_fwrite(b, 1, 8, f) == 8;
}
FLAC__bool write_big_endian_uint16(FILE *f, FLAC__uint16 val)
{
FLAC__byte *b = (FLAC__byte*)(&val);
if(!is_big_endian_host_) {
FLAC__byte tmp;
tmp = b[1]; b[1] = b[0]; b[0] = tmp;
}
return flac__utils_fwrite(b, 1, 2, f) == 2;
}
FLAC__bool write_big_endian_uint32(FILE *f, FLAC__uint32 val)
{
FLAC__byte *b = (FLAC__byte*)(&val);
if(!is_big_endian_host_) {
FLAC__byte tmp;
tmp = b[3]; b[3] = b[0]; b[0] = tmp;
tmp = b[2]; b[2] = b[1]; b[1] = tmp;
}
return flac__utils_fwrite(b, 1, 4, f) == 4;
}
FLAC__bool write_sane_extended(FILE *f, unsigned val)
/* Write to 'f' a SANE extended representation of 'val'. Return false if
* the write succeeds; return true otherwise.
*
* SANE extended is an 80-bit IEEE-754 representation with sign bit, 15 bits
* of exponent, and 64 bits of significand (mantissa). Unlike most IEEE-754
* representations, it does not imply a 1 above the MSB of the significand.
*
* Preconditions:
* val!=0U
*/
{
unsigned int shift, exponent;
FLAC__ASSERT(val!=0U); /* handling 0 would require a special case */
for(shift= 0U; (val>>(31-shift))==0U; ++shift)
;
val<<= shift;
exponent= 63U-(shift+32U); /* add 32 for unused second word */
if(!write_big_endian_uint16(f, (FLAC__uint16)(exponent+0x3FFF)))
return false;
if(!write_big_endian_uint32(f, val))
return false;
if(!write_big_endian_uint32(f, 0)) /* unused second word */
return false;
return true;
}
FLAC__bool fixup_iff_headers(DecoderSession *d)
{
const char *fmt_desc =
d->format==FORMAT_WAVE? "WAVE" :
d->format==FORMAT_WAVE64? "Wave64" :
d->format==FORMAT_RF64? "RF64" :
"AIFF";
FILE *f = flac_fopen(d->outfilename, "r+b"); /* stream is positioned at beginning of file */
if(0 == f) {
flac__utils_printf(stderr, 1, "ERROR, couldn't open file %s while fixing up %s chunk size: %s\n", d->outfilename, fmt_desc, strerror(errno));
return false;
}
if(!write_iff_headers(f, d, d->samples_processed)) {
fclose(f);
return false;
}
fclose(f);
return true;
}
FLAC__StreamDecoderWriteStatus write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
DecoderSession *decoder_session = (DecoderSession*)client_data;
FILE *fout = decoder_session->fout;
const unsigned bps = frame->header.bits_per_sample, channels = frame->header.channels;
const unsigned shift = (decoder_session->format != FORMAT_RAW && (bps%8))? 8-(bps%8): 0;
FLAC__bool is_big_endian = (
decoder_session->format == FORMAT_AIFF || decoder_session->format == FORMAT_AIFF_C ? true : (
decoder_session->format == FORMAT_WAVE || decoder_session->format == FORMAT_WAVE64 || decoder_session->format == FORMAT_RF64 ? false :
decoder_session->is_big_endian
));
FLAC__bool is_unsigned_samples = (
decoder_session->format == FORMAT_AIFF || decoder_session->format == FORMAT_AIFF_C ? false : (
decoder_session->format == FORMAT_WAVE || decoder_session->format == FORMAT_WAVE64 || decoder_session->format == FORMAT_RF64 ? bps<=8 :
decoder_session->is_unsigned_samples
));
unsigned wide_samples = frame->header.blocksize, wide_sample, sample, channel;
unsigned frame_bytes = 0;
static union
{ /* The arrays defined within this union are all the same size. */
FLAC__int8 s8buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS * sizeof(FLAC__int32)]; /* WATCHOUT: can be up to 2 megs */
FLAC__uint8 u8buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS * sizeof(FLAC__int32)];
FLAC__int16 s16buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS * sizeof(FLAC__int16)];
FLAC__uint16 u16buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS * sizeof(FLAC__int16)];
FLAC__int32 s32buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS];
FLAC__uint32 u32buffer [FLAC__MAX_BLOCK_SIZE * FLAC__MAX_CHANNELS];
} ubuf;
size_t bytes_to_write = 0;
(void)decoder;
if(decoder_session->abort_flag)
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
/* sanity-check the bits-per-sample */
if(decoder_session->bps) {
if(bps != decoder_session->bps) {
if(decoder_session->got_stream_info)
flac__utils_printf(stderr, 1, "%s: ERROR, bits-per-sample is %u in frame but %u in STREAMINFO\n", decoder_session->inbasefilename, bps, decoder_session->bps);
else
flac__utils_printf(stderr, 1, "%s: ERROR, bits-per-sample is %u in this frame but %u in previous frames\n", decoder_session->inbasefilename, bps, decoder_session->bps);
if(!decoder_session->continue_through_decode_errors)
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
else {
/* must not have gotten STREAMINFO, save the bps from the frame header */
FLAC__ASSERT(!decoder_session->got_stream_info);
decoder_session->bps = bps;
}
/* sanity-check the #channels */
if(decoder_session->channels) {
if(channels != decoder_session->channels) {
if(decoder_session->got_stream_info)
flac__utils_printf(stderr, 1, "%s: ERROR, channels is %u in frame but %u in STREAMINFO\n", decoder_session->inbasefilename, channels, decoder_session->channels);
else
flac__utils_printf(stderr, 1, "%s: ERROR, channels is %u in this frame but %u in previous frames\n", decoder_session->inbasefilename, channels, decoder_session->channels);
if(!decoder_session->continue_through_decode_errors)
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
else {
/* must not have gotten STREAMINFO, save the #channels from the frame header */
FLAC__ASSERT(!decoder_session->got_stream_info);
decoder_session->channels = channels;
}
/* sanity-check the sample rate */
if(decoder_session->sample_rate) {
if(frame->header.sample_rate != decoder_session->sample_rate) {
if(decoder_session->got_stream_info)
flac__utils_printf(stderr, 1, "%s: ERROR, sample rate is %u in frame but %u in STREAMINFO\n", decoder_session->inbasefilename, frame->header.sample_rate, decoder_session->sample_rate);
else
flac__utils_printf(stderr, 1, "%s: ERROR, sample rate is %u in this frame but %u in previous frames\n", decoder_session->inbasefilename, frame->header.sample_rate, decoder_session->sample_rate);
if(!decoder_session->continue_through_decode_errors)
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
else {
/* must not have gotten STREAMINFO, save the sample rate from the frame header */
FLAC__ASSERT(!decoder_session->got_stream_info);
decoder_session->sample_rate = frame->header.sample_rate;
}
/*
* limit the number of samples to accept based on --until
*/
FLAC__ASSERT(!decoder_session->skip_specification->is_relative);
/* if we never got the total_samples from the metadata, the skip and until specs would never have been canonicalized, so protect against that: */
if(decoder_session->skip_specification->is_relative) {
if(decoder_session->skip_specification->value.samples == 0) /* special case for when no --skip was given */
decoder_session->skip_specification->is_relative = false; /* convert to our meaning of beginning-of-stream */
else {
flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --skip because the total sample count was not found in the metadata\n", decoder_session->inbasefilename);
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
if(decoder_session->until_specification->is_relative) {
if(decoder_session->until_specification->value.samples == 0) /* special case for when no --until was given */
decoder_session->until_specification->is_relative = false; /* convert to our meaning of end-of-stream */
else {
flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --until because the total sample count was not found in the metadata\n", decoder_session->inbasefilename);
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
FLAC__ASSERT(decoder_session->skip_specification->value.samples >= 0);
FLAC__ASSERT(decoder_session->until_specification->value.samples >= 0);
if(decoder_session->until_specification->value.samples > 0) {
const FLAC__uint64 skip = (FLAC__uint64)decoder_session->skip_specification->value.samples;
const FLAC__uint64 until = (FLAC__uint64)decoder_session->until_specification->value.samples;
const FLAC__uint64 input_samples_passed = skip + decoder_session->samples_processed;
FLAC__ASSERT(until >= input_samples_passed);
if(input_samples_passed + wide_samples > until)
wide_samples = (unsigned)(until - input_samples_passed);
if (wide_samples == 0) {
decoder_session->abort_flag = true;
decoder_session->aborting_due_to_until = true;
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
if(decoder_session->analysis_mode) {
FLAC__uint64 dpos;
FLAC__stream_decoder_get_decode_position(decoder_session->decoder, &dpos);
frame_bytes = (unsigned)(dpos-decoder_session->decode_position);
decoder_session->decode_position = dpos;
}
if(wide_samples > 0) {
decoder_session->samples_processed += wide_samples;
decoder_session->frame_counter++;
if(!(decoder_session->frame_counter & 0x1ff))
print_stats(decoder_session);
if(decoder_session->analysis_mode) {
flac__analyze_frame(frame, decoder_session->frame_counter-1, decoder_session->decode_position-frame_bytes, frame_bytes, decoder_session->aopts, fout);
}
else if(!decoder_session->test_only) {
if(shift && !decoder_session->replaygain.apply) {
for(wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++)
((uint32_t **)buffer)[channel][wide_sample] <<= shift;/*@@@@@@un-const'ing the buffer is hacky but safe*/
}
if(decoder_session->replaygain.apply) {
bytes_to_write = FLAC__replaygain_synthesis__apply_gain(
ubuf.u8buffer,
!is_big_endian,
is_unsigned_samples,
buffer,
wide_samples,
channels,
bps, /* source_bps */
bps+shift, /* target_bps */
decoder_session->replaygain.scale,
decoder_session->replaygain.spec.limiter == RGSS_LIMIT__HARD, /* hard_limit */
decoder_session->replaygain.spec.noise_shaping != NOISE_SHAPING_NONE, /* do_dithering */
&decoder_session->replaygain.dither_context
);
}
/* first some special code for common cases */
else if(is_big_endian == is_big_endian_host_ && !is_unsigned_samples && channels == 2 && bps+shift == 16) {
FLAC__int16 *buf1_ = ubuf.s16buffer + 1;
if(is_big_endian)
memcpy(ubuf.s16buffer, ((FLAC__byte*)(buffer[0]))+2, sizeof(FLAC__int32) * wide_samples - 2);
else
memcpy(ubuf.s16buffer, buffer[0], sizeof(FLAC__int32) * wide_samples);
for(sample = 0; sample < wide_samples; sample++, buf1_+=2)
*buf1_ = (FLAC__int16)buffer[1][sample];
bytes_to_write = 4 * sample;
}
else if(is_big_endian == is_big_endian_host_ && !is_unsigned_samples && channels == 1 && bps+shift == 16) {
FLAC__int16 *buf1_ = ubuf.s16buffer;
for(sample = 0; sample < wide_samples; sample++)
*buf1_++ = (FLAC__int16)buffer[0][sample];
bytes_to_write = 2 * sample;
}
/* generic code for the rest */
else if(bps+shift == 16) {
if(is_unsigned_samples) {
if(channels == 2) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
ubuf.u16buffer[sample++] = (FLAC__uint16)(buffer[0][wide_sample] + 0x8000);
ubuf.u16buffer[sample++] = (FLAC__uint16)(buffer[1][wide_sample] + 0x8000);
}
}
else if(channels == 1) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
ubuf.u16buffer[sample++] = (FLAC__uint16)(buffer[0][wide_sample] + 0x8000);
}
else { /* works for any 'channels' but above flavors are faster for 1 and 2 */
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.u16buffer[sample] = (FLAC__uint16)(buffer[channel][wide_sample] + 0x8000);
}
}
else {
if(channels == 2) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
ubuf.s16buffer[sample++] = (FLAC__int16)(buffer[0][wide_sample]);
ubuf.s16buffer[sample++] = (FLAC__int16)(buffer[1][wide_sample]);
}
}
else if(channels == 1) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
ubuf.s16buffer[sample++] = (FLAC__int16)(buffer[0][wide_sample]);
}
else { /* works for any 'channels' but above flavors are faster for 1 and 2 */
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.s16buffer[sample] = (FLAC__int16)(buffer[channel][wide_sample]);
}
}
if(is_big_endian != is_big_endian_host_) {
unsigned char tmp;
const unsigned bytes = sample * 2;
unsigned b;
for(b = 0; b < bytes; b += 2) {
tmp = ubuf.u8buffer[b];
ubuf.u8buffer[b] = ubuf.u8buffer[b+1];
ubuf.u8buffer[b+1] = tmp;
}
}
bytes_to_write = 2 * sample;
}
else if(bps+shift == 24) {
if(is_unsigned_samples) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.u32buffer[sample] = buffer[channel][wide_sample] + 0x800000;
}
else {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.s32buffer[sample] = buffer[channel][wide_sample];
}
if(is_big_endian != is_big_endian_host_) {
unsigned char tmp;
const unsigned bytes = sample * 4;
unsigned b;
for(b = 0; b < bytes; b += 4) {
tmp = ubuf.u8buffer[b];
ubuf.u8buffer[b] = ubuf.u8buffer[b+3];
ubuf.u8buffer[b+3] = tmp;
tmp = ubuf.u8buffer[b+1];
ubuf.u8buffer[b+1] = ubuf.u8buffer[b+2];
ubuf.u8buffer[b+2] = tmp;
}
}
if(is_big_endian) {
unsigned b, lbyte;
const unsigned bytes = sample * 4;
for(lbyte = b = 0; b < bytes; ) {
b++;
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
}
}
else {
unsigned b, lbyte;
const unsigned bytes = sample * 4;
for(lbyte = b = 0; b < bytes; ) {
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
ubuf.u8buffer[lbyte++] = ubuf.u8buffer[b++];
b++;
}
}
bytes_to_write = 3 * sample;
}
else if(bps+shift == 8) {
if(is_unsigned_samples) {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.u8buffer[sample] = (FLAC__uint8)(buffer[channel][wide_sample] + 0x80);
}
else {
for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
for(channel = 0; channel < channels; channel++, sample++)
ubuf.s8buffer[sample] = (FLAC__int8)(buffer[channel][wide_sample]);
}
bytes_to_write = sample;
}
else {
FLAC__ASSERT(0);
/* double protection */
decoder_session->abort_flag = true;
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
}
if(bytes_to_write > 0) {
if(flac__utils_fwrite(ubuf.u8buffer, 1, bytes_to_write, fout) != bytes_to_write) {
/* if a pipe closed when writing to stdout, we let it go without an error message */
if(errno == EPIPE && decoder_session->fout == stdout)
decoder_session->aborting_due_to_until = true;
decoder_session->abort_flag = true;
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
}
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
void metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
DecoderSession *decoder_session = (DecoderSession*)client_data;
if(decoder_session->analysis_mode)
FLAC__stream_decoder_get_decode_position(decoder, &decoder_session->decode_position);
if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
FLAC__uint64 skip, until;
decoder_session->got_stream_info = true;
decoder_session->has_md5sum = memcmp(metadata->data.stream_info.md5sum, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16);
decoder_session->bps = metadata->data.stream_info.bits_per_sample;
decoder_session->channels = metadata->data.stream_info.channels;
decoder_session->sample_rate = metadata->data.stream_info.sample_rate;
flac__utils_canonicalize_skip_until_specification(decoder_session->skip_specification, decoder_session->sample_rate);
FLAC__ASSERT(decoder_session->skip_specification->value.samples >= 0);
skip = (FLAC__uint64)decoder_session->skip_specification->value.samples;
/* remember, metadata->data.stream_info.total_samples can be 0, meaning 'unknown' */
if(metadata->data.stream_info.total_samples > 0 && skip >= metadata->data.stream_info.total_samples) {
flac__utils_printf(stderr, 1, "%s: ERROR trying to --skip more samples than in stream\n", decoder_session->inbasefilename);
decoder_session->abort_flag = true;
return;
}
else if(metadata->data.stream_info.total_samples == 0 && skip > 0) {
flac__utils_printf(stderr, 1, "%s: ERROR, can't --skip when FLAC metadata has total sample count of 0\n", decoder_session->inbasefilename);
decoder_session->abort_flag = true;
return;
}
FLAC__ASSERT(skip == 0 || 0 == decoder_session->cue_specification);
decoder_session->total_samples = metadata->data.stream_info.total_samples - skip;
/* note that we use metadata->data.stream_info.total_samples instead of decoder_session->total_samples */
if(!canonicalize_until_specification(decoder_session->until_specification, decoder_session->inbasefilename, decoder_session->sample_rate, skip, metadata->data.stream_info.total_samples)) {
decoder_session->abort_flag = true;
return;
}
FLAC__ASSERT(decoder_session->until_specification->value.samples >= 0);
until = (FLAC__uint64)decoder_session->until_specification->value.samples;
if(until > 0) {
FLAC__ASSERT(decoder_session->total_samples != 0);
FLAC__ASSERT(0 == decoder_session->cue_specification);
decoder_session->total_samples -= (metadata->data.stream_info.total_samples - until);
}
if(decoder_session->format == FORMAT_RAW && ((decoder_session->bps % 8) != 0 || decoder_session->bps < 4 || decoder_session->bps > 24)) {
flac__utils_printf(stderr, 1, "%s: ERROR: bits per sample is %u, must be 8/16/24 for raw format output\n", decoder_session->inbasefilename, decoder_session->bps);
decoder_session->abort_flag = true;
return;
}
if(decoder_session->bps < 4 || decoder_session->bps > 24) {
flac__utils_printf(stderr, 1, "%s: ERROR: bits per sample is %u, must be 4-24\n", decoder_session->inbasefilename, decoder_session->bps);
decoder_session->abort_flag = true;
return;
}
}
else if(metadata->type == FLAC__METADATA_TYPE_CUESHEET) {
/* remember, at this point, decoder_session->total_samples can be 0, meaning 'unknown' */
if(decoder_session->total_samples == 0) {
flac__utils_printf(stderr, 1, "%s: ERROR can't use --cue when FLAC metadata has total sample count of 0\n", decoder_session->inbasefilename);
decoder_session->abort_flag = true;
return;
}
flac__utils_canonicalize_cue_specification(decoder_session->cue_specification, &metadata->data.cue_sheet, decoder_session->total_samples, decoder_session->skip_specification, decoder_session->until_specification);
FLAC__ASSERT(!decoder_session->skip_specification->is_relative);
FLAC__ASSERT(decoder_session->skip_specification->value_is_samples);
FLAC__ASSERT(!decoder_session->until_specification->is_relative);
FLAC__ASSERT(decoder_session->until_specification->value_is_samples);
FLAC__ASSERT(decoder_session->skip_specification->value.samples >= 0);
FLAC__ASSERT(decoder_session->until_specification->value.samples >= 0);
FLAC__ASSERT((FLAC__uint64)decoder_session->until_specification->value.samples <= decoder_session->total_samples);
FLAC__ASSERT(decoder_session->skip_specification->value.samples <= decoder_session->until_specification->value.samples);
decoder_session->total_samples = decoder_session->until_specification->value.samples - decoder_session->skip_specification->value.samples;
}
else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
if (decoder_session->replaygain.spec.apply) {
double reference, gain, peak;
if (!(decoder_session->replaygain.apply = grabbag__replaygain_load_from_vorbiscomment(metadata, decoder_session->replaygain.spec.use_album_gain, /*strict=*/false, &reference, &gain, &peak))) {
flac__utils_printf(stderr, 1, "%s: WARNING: can't get %s (or even %s) ReplayGain tags\n", decoder_session->inbasefilename, decoder_session->replaygain.spec.use_album_gain? "album":"track", decoder_session->replaygain.spec.use_album_gain? "track":"album");
if(decoder_session->treat_warnings_as_errors) {
decoder_session->abort_flag = true;
return;
}
}
else {
const char *ls[] = { "no", "peak", "hard" };
const char *ns[] = { "no", "low", "medium", "high" };
decoder_session->replaygain.scale = grabbag__replaygain_compute_scale_factor(peak, gain, decoder_session->replaygain.spec.preamp, decoder_session->replaygain.spec.limiter == RGSS_LIMIT__PEAK);
FLAC__ASSERT(decoder_session->bps > 0 && decoder_session->bps <= 32);
FLAC__replaygain_synthesis__init_dither_context(&decoder_session->replaygain.dither_context, decoder_session->bps, decoder_session->replaygain.spec.noise_shaping);
flac__utils_printf(stderr, 1, "%s: INFO: applying %s ReplayGain (gain=%0.2fdB+preamp=%0.1fdB, %s noise shaping, %s limiting) to output\n", decoder_session->inbasefilename, decoder_session->replaygain.spec.use_album_gain? "album":"track", gain, decoder_session->replaygain.spec.preamp, ns[decoder_session->replaygain.spec.noise_shaping], ls[decoder_session->replaygain.spec.limiter]);
flac__utils_printf(stderr, 1, "%s: WARNING: applying ReplayGain is not lossless\n", decoder_session->inbasefilename);
/* don't check if(decoder_session->treat_warnings_as_errors) because the user explicitly asked for it */
}
}
(void)flac__utils_get_channel_mask_tag(metadata, &decoder_session->channel_mask);
}
}
void error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
DecoderSession *decoder_session = (DecoderSession*)client_data;
(void)decoder;
if(!decoder_session->error_callback_suppress_messages) {
stats_print_name(1, decoder_session->inbasefilename);
flac__utils_printf(stderr, 1, "*** Got error code %d:%s\n", status, FLAC__StreamDecoderErrorStatusString[status]);
}
if(!decoder_session->continue_through_decode_errors) {
/* if we got a sync error while looking for metadata, either it's not a FLAC file (more likely) or the file is corrupted */
if(
!decoder_session->error_callback_suppress_messages &&
status == FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC &&
FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_SEARCH_FOR_METADATA
) {
flac__utils_printf(stderr, 1,
"\n"
"The input file is either not a FLAC file or is corrupted. If you are\n"
"convinced it is a FLAC file, you can rerun the same command and add the\n"
"-F parameter to try and recover as much as possible from the file.\n"
);
decoder_session->error_callback_suppress_messages = true;
}
else if(status == FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM)
decoder_session->aborting_due_to_unparseable = true;
decoder_session->abort_flag = true;
}
}
void print_error_with_init_status(const DecoderSession *d, const char *message, FLAC__StreamDecoderInitStatus init_status)
{
const int ilen = strlen(d->inbasefilename) + 1;
flac__utils_printf(stderr, 1, "\n%s: %s\n", d->inbasefilename, message);
flac__utils_printf(stderr, 1, "%*s init status = %s\n", ilen, "", FLAC__StreamDecoderInitStatusString[init_status]);
/* print out some more info for some errors: */
if (init_status == FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE) {
flac__utils_printf(stderr, 1,
"\n"
"An error occurred opening the input file; it is likely that it does not exist\n"
"or is not readable.\n"
);
}
}
void print_error_with_state(const DecoderSession *d, const char *message)
{
const int ilen = strlen(d->inbasefilename) + 1;
flac__utils_printf(stderr, 1, "\n%s: %s\n", d->inbasefilename, message);
flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", FLAC__stream_decoder_get_resolved_state_string(d->decoder));
/* print out some more info for some errors: */
if (d->aborting_due_to_unparseable) {
flac__utils_printf(stderr, 1,
"\n"
"The FLAC stream may have been created by a more advanced encoder. Try\n"
" metaflac --show-vendor-tag %s\n"
"If the version number is greater than %s, this decoder is probably\n"
"not able to decode the file. If the version number is not, the file\n"
"may be corrupted, or you may have found a bug. In this case please\n"
"submit a bug report to\n"
" https://sourceforge.net/p/flac/bugs/\n"
"Make sure to use the \"Monitor\" feature to monitor the bug status.\n",
d->inbasefilename, FLAC__VERSION_STRING
);
}
}
void print_stats(const DecoderSession *decoder_session)
{
if(flac__utils_verbosity_ >= 2) {
const double progress = (double)decoder_session->samples_processed / (double)decoder_session->total_samples * 100.0;
if(decoder_session->total_samples > 0) {
if ((unsigned)floor(progress + 0.5) == 100)
return;
stats_print_name(2, decoder_session->inbasefilename);
stats_print_info(2, "%s%u%% complete",
decoder_session->test_only? "testing, " : decoder_session->analysis_mode? "analyzing, " : "",
(unsigned)floor(progress + 0.5)
);
}
else {
stats_print_name(2, decoder_session->inbasefilename);
stats_print_info(2, "%s %" PRIu64 " samples",
decoder_session->test_only? "tested" : decoder_session->analysis_mode? "analyzed" : "wrote",
decoder_session->samples_processed
);
}
}
}