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fix more bugs with --skip and --until

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This commit is contained in:
Josh Coalson 2002-12-15 21:40:24 +00:00
parent 1612949996
commit 5186c8f3ea
2 changed files with 44 additions and 5 deletions
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3
src/flac/decode.c
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@ -803,7 +803,8 @@ void metadata_callback(const void *decoder, const FLAC__StreamMetadata *metadata
FLAC__ASSERT(decoder_session->until_specification->value.samples >= 0);
until = (FLAC__uint64)decoder_session->until_specification->value.samples;
decoder_session->total_samples -= (metadata->data.stream_info.total_samples - until);
if(until > 0)
decoder_session->total_samples -= (metadata->data.stream_info.total_samples - until);
if(decoder_session->bps != 8 && decoder_session->bps != 16 && decoder_session->bps != 24) {
fprintf(stderr, "%s: ERROR: bits per sample is not 8/16/24\n", decoder_session->inbasefilename);

46
src/flac/encode.c
View File

@ -278,7 +278,7 @@ flac__encode_aif(FILE *infile, long infilesize, const char *infilename, const ch
else if(got_ssnd_chunk==false && !strncmp(chunk_id, "SSND", 4)) { /* sound data chunk */
unsigned int offset= 0U, block_size= 0U, align_remainder= 0U, data_bytes;
size_t bytes_per_frame= channels*(bps>>3);
FLAC__uint64 total_samples_in_input;
FLAC__uint64 total_samples_in_input, trim = 0;
FLAC__bool pad= false;
if(got_comm_chunk==false) {
@ -352,7 +352,7 @@ flac__encode_aif(FILE *infile, long infilesize, const char *infilename, const ch
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) {
const FLAC__uint64 trim = total_samples_in_input - encoder_session.until;
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;
@ -424,6 +424,29 @@ flac__encode_aif(FILE *infile, long infilesize, const char *infilename, const ch
}
}
if(trim>0) {
FLAC__uint64 remaining= (unsigned int)trim*bytes_per_frame;
FLAC__ASSERT(!options.common.sector_align);
/* do 1<<30 bytes at a time, since 1<<30 is a nice round number, and */
/* is guaranteed to be less than LONG_MAX */
for(; remaining>0U; remaining-= remaining>(1U<<30) ? remaining : (1U<<30))
{
unsigned long skip= (unsigned long)(remaining % (1U<<30));
FLAC__ASSERT(skip<=LONG_MAX);
while(skip>0 && fseek(infile, skip, SEEK_CUR)<0) {
unsigned int need= min(skip, sizeof ucbuffer_);
if(fread(ucbuffer_, 1U, need, infile)<need) {
fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
skip-= need;
}
}
}
/* now read unaligned samples into reservoir or pad with zeroes if necessary */
if(options.common.sector_align) {
if(options.common.is_last_file) {
@ -637,7 +660,7 @@ int flac__encode_wav(FILE *infile, long infilesize, const char *infilename, cons
got_fmt_chunk = true;
}
else if(xx == 0x61746164 && !got_data_chunk && got_fmt_chunk) { /* "data" */
FLAC__uint64 total_samples_in_input;
FLAC__uint64 total_samples_in_input, trim = 0;
/* data size */
if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
@ -677,7 +700,7 @@ int flac__encode_wav(FILE *infile, long infilesize, const char *infilename, cons
data_bytes -= (unsigned)encoder_session.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
if(encoder_session.until > 0) {
const FLAC__uint64 trim = total_samples_in_input - encoder_session.until;
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_wide_sample;
@ -753,6 +776,21 @@ int flac__encode_wav(FILE *infile, long infilesize, const char *infilename, cons
}
}
if(trim > 0) {
if(fseek(infile, bytes_per_wide_sample * (unsigned)trim, SEEK_CUR) < 0) {
/* can't seek input, read ahead manually... */
unsigned left, need;
for(left = (unsigned)trim; left > 0; ) { /*@@@ WATCHOUT: 4GB limit */
need = min(left, CHUNK_OF_SAMPLES);
if(fread(ucbuffer_, bytes_per_wide_sample, need, infile) < need) {
fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
return EncoderSession_finish_error(&encoder_session);
}
left -= need;
}
}
}
/*
* now read unaligned samples into reservoir or pad with zeroes if necessary
*/