📄 encode.c
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if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
offset= xx;
data_bytes-= offset;
/* block size */
if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
else if(xx!=0U) {
flac__utils_printf(stderr, 1, "%s: ERROR: block size is %u; must be 0\n", encoder_session.inbasefilename, (unsigned int)xx);
return EncoderSession_finish_error(&encoder_session);
}
block_size= xx;
/* skip any SSND offset bytes */
FLAC__ASSERT(offset<=LONG_MAX);
if(!fskip_ahead(infile, offset)) {
flac__utils_printf(stderr, 1, "%s: ERROR: skipping offset in SSND chunk\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
if(data_bytes!=(sample_frames*bytes_per_frame)) {
flac__utils_printf(stderr, 1, "%s: ERROR: SSND chunk size inconsistent with sample frame count\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
/* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
total_samples_in_input = data_bytes / bytes_per_frame + *options.common.align_reservoir_samples;
/*
* now that we know the input size, canonicalize the
* --until string to an absolute sample number:
*/
if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
return EncoderSession_finish_error(&encoder_session);
encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
if(encoder_session.skip>0U) {
if(!fskip_ahead(infile, encoder_session.skip*bytes_per_frame)) {
flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
}
data_bytes-= (unsigned int)encoder_session.skip*bytes_per_frame; /*@@@ WATCHOUT: 4GB limit */
encoder_session.total_samples_to_encode= total_samples_in_input - encoder_session.skip;
if(encoder_session.until > 0) {
trim = total_samples_in_input - encoder_session.until;
FLAC__ASSERT(total_samples_in_input > 0);
FLAC__ASSERT(!options.common.sector_align);
data_bytes-= (unsigned int)trim*bytes_per_frame;
encoder_session.total_samples_to_encode-= trim;
}
if(options.common.sector_align) {
align_remainder= (unsigned int)(encoder_session.total_samples_to_encode % 588U);
if(options.common.is_last_file)
encoder_session.total_samples_to_encode+= (588U-align_remainder); /* will pad with zeroes */
else
encoder_session.total_samples_to_encode-= align_remainder; /* will stop short and carry over to next file */
}
/* +54 for the size of the AIFF headers; this is just an estimate for the progress indicator and doesn't need to be exact */
encoder_session.unencoded_size= encoder_session.total_samples_to_encode*bytes_per_frame+54;
if(!EncoderSession_init_encoder(&encoder_session, options.common, channels, bps, sample_rate))
return EncoderSession_finish_error(&encoder_session);
/* first do any samples in the reservoir */
if(options.common.sector_align && *options.common.align_reservoir_samples>0U) {
if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
print_error_with_state(&encoder_session, "ERROR during encoding");
return EncoderSession_finish_error(&encoder_session);
}
}
/* decrement the data_bytes counter if we need to align the file */
if(options.common.sector_align) {
if(options.common.is_last_file)
*options.common.align_reservoir_samples= 0U;
else {
*options.common.align_reservoir_samples= align_remainder;
data_bytes-= (*options.common.align_reservoir_samples)*bytes_per_frame;
}
}
/* now do from the file */
while(data_bytes>0) {
size_t bytes_read= fread(ucbuffer_, 1U, min(data_bytes, CHUNK_OF_SAMPLES*bytes_per_frame), infile);
if(bytes_read==0U) {
if(ferror(infile)) {
flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
else if(feof(infile)) {
flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
data_bytes= 0;
}
}
else {
if(bytes_read % bytes_per_frame != 0U) {
flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
else {
unsigned int frames= bytes_read/bytes_per_frame;
format_input(input_, frames, true, false, channels, bps);
if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, frames)) {
print_error_with_state(&encoder_session, "ERROR during encoding");
return EncoderSession_finish_error(&encoder_session);
}
else
data_bytes-= bytes_read;
}
}
}
if(trim>0) {
FLAC__ASSERT(!options.common.sector_align);
if(!fskip_ahead(infile, trim*bytes_per_frame)) {
flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
}
/* now read unaligned samples into reservoir or pad with zeroes if necessary */
if(options.common.sector_align) {
if(options.common.is_last_file) {
unsigned int pad_frames= 588U-align_remainder;
if(pad_frames<588U) {
unsigned int i;
info_align_zero= pad_frames;
for(i= 0U; i<channels; ++i)
memset(input_[i], 0, pad_frames*(bps>>3));
if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, pad_frames)) {
print_error_with_state(&encoder_session, "ERROR during encoding");
return EncoderSession_finish_error(&encoder_session);
}
}
}
else {
if(*options.common.align_reservoir_samples > 0) {
size_t bytes_read= fread(ucbuffer_, 1U, (*options.common.align_reservoir_samples)*bytes_per_frame, infile);
FLAC__ASSERT(CHUNK_OF_SAMPLES>=588U);
if(bytes_read==0U && ferror(infile)) {
flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_frame) {
flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)bytes_read, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
}
else {
info_align_carry= *options.common.align_reservoir_samples;
format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, true, false, channels, bps);
}
}
}
}
if(pad==true) {
unsigned char tmp;
if(fread(&tmp, 1U, 1U, infile)<1U) {
flac__utils_printf(stderr, 1, "%s: ERROR during read of SSND pad byte\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
}
got_ssnd_chunk= true;
}
else { /* other chunk */
if(!strncmp(chunk_id, "COMM", 4)) {
flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'COMM' chunk\n", encoder_session.inbasefilename);
}
else if(!strncmp(chunk_id, "SSND", 4)) {
flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'SSND' chunk\n", encoder_session.inbasefilename);
}
else {
flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk '%s'\n", encoder_session.inbasefilename, chunk_id);
}
/* chunk size */
if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
else {
unsigned long skip= xx+(xx & 1U);
FLAC__ASSERT(skip<=LONG_MAX);
if(!fskip_ahead(infile, skip)) {
fprintf(stderr, "%s: ERROR during read while skipping unknown chunk\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
}
}
}
if(got_ssnd_chunk==false && sample_frames!=0U) {
flac__utils_printf(stderr, 1, "%s: ERROR: missing SSND chunk\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
}
int flac__encode_wav(FILE *infile, long infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options)
{
EncoderSession encoder_session;
FLAC__bool is_unsigned_samples = false;
unsigned channels = 0, bps = 0, sample_rate = 0, data_bytes;
size_t bytes_per_wide_sample, bytes_read;
FLAC__uint16 x;
FLAC__uint32 xx;
FLAC__bool got_fmt_chunk = false, got_data_chunk = false;
unsigned align_remainder = 0;
int info_align_carry = -1, info_align_zero = -1;
(void)infilesize;
(void)lookahead;
(void)lookahead_length;
if(!
EncoderSession_construct(
&encoder_session,
#ifdef FLAC__HAS_OGG
options.common.use_ogg,
#else
/*use_ogg=*/false,
#endif
options.common.verify,
infile,
infilename,
outfilename
)
)
return 1;
/*
* lookahead[] already has "RIFFxxxxWAVE", do sub-chunks
*/
while(!feof(infile)) {
if(!read_little_endian_uint32(infile, &xx, true, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
if(feof(infile))
break;
if(xx == 0x20746d66 && !got_fmt_chunk) { /* "fmt " */
unsigned block_align;
/* fmt sub-chunk size */
if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
if(xx < 16) {
flac__utils_printf(stderr, 1, "%s: ERROR: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
return EncoderSession_finish_error(&encoder_session);
}
else if(xx != 16 && xx != 18) {
flac__utils_printf(stderr, 1, "%s: WARNING: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
}
data_bytes = xx;
/* compression code */
if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
if(x != 1) {
flac__utils_printf(stderr, 1, "%s: ERROR: unsupported compression type %u\n", encoder_session.inbasefilename, (unsigned)x);
return EncoderSession_finish_error(&encoder_session);
}
/* number of channels */
if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
if(x == 0 || x > FLAC__MAX_CHANNELS) {
flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned)x);
return EncoderSession_finish_error(&encoder_session);
}
else if(options.common.sector_align && x != 2) {
flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned)x);
return EncoderSession_finish_error(&encoder_session);
}
channels = x;
/* sample rate */
if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
if(!FLAC__format_sample_rate_is_valid(xx)) {
flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned)xx);
return EncoderSession_finish_error(&encoder_session);
}
else if(options.common.sector_align && xx != 44100) {
flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned)xx);
return EncoderSession_finish_error(&encoder_session);
}
sample_rate = xx;
/* avg bytes per second (ignored) */
if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
/* block align */
if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
return EncoderSession_finish_error(&encoder_session);
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