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finish up implementation

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This commit is contained in:
Josh Coalson
2002-08-01 06:35:07 +00:00
parent f1eff45c96
commit 69484aa893
2 changed files with 235 additions and 188 deletions
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40
include/FLAC/seekable_stream_encoder.h
View File

@@ -85,6 +85,9 @@ typedef enum {
FLAC__SEEKABLE_STREAM_ENCODER_MEMORY_ALLOCATION_ERROR,
/**< Memory allocation failed. */
FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR,
/**< The write callback returned an error. */
FLAC__SEEKABLE_STREAM_ENCODER_READ_ERROR,
/**< The read callback returned an error. */
@@ -102,6 +105,11 @@ typedef enum {
* callbacks being set.
*/
FLAC__SEEKABLE_STREAM_ENCODER_INVALID_SEEKTABLE,
/**< An invalid seek table was passed is the metadata to
* FLAC__seekable_stream_encoder_set_metadata().
*/
FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED
/**< The encoder is in the uninitialized state. */
@@ -116,6 +124,26 @@ typedef enum {
extern const char * const FLAC__SeekableStreamEncoderStateString[];
/** Return values for the FLAC__SeekableStreamEncoder seek callback.
*/
typedef enum {
FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK,
/**< The seek was OK and encoding can continue. */
FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_ERROR
/**< An unrecoverable error occurred. The encoder will return from the process call. */
} FLAC__SeekableStreamEncoderSeekStatus;
/** Maps a FLAC__SeekableStreamEncoderSeekStatus to a C string.
*
* Using a FLAC__SeekableStreamEncoderSeekStatus as the index to this array
* will give the string equivalent. The contents should not be modified.
*/
extern const char * const FLAC__SeekableStreamEncoderSeekStatusString[];
/***********************************************************************
*
* class FLAC__SeekableStreamEncoder
@@ -382,6 +410,12 @@ FLAC__bool FLAC__seekable_stream_encoder_set_total_samples_estimate(FLAC__Seekab
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_metadata().
*
* \note
* The decoder instance \b will modify the first \c SEEKTABLE block
* as it transforms the template to a valid seektable while encoding,
* but it is still up to the caller to free all metadata blocks after
* encoding.
*
* \default \c NULL, 0
* \param encoder An encoder instance to set.
* \param metadata See above.
@@ -391,7 +425,7 @@ FLAC__bool FLAC__seekable_stream_encoder_set_total_samples_estimate(FLAC__Seekab
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC__bool FLAC__seekable_stream_encoder_set_metadata(FLAC__SeekableStreamEncoder *encoder, FLAC__FileMetadata **metadata, unsigned num_blocks);
FLAC__bool FLAC__seekable_stream_encoder_set_metadata(FLAC__SeekableStreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks);
/** Set the seek callback.
* The supplied function will be called when the encoder needs to seek
@@ -428,7 +462,7 @@ FLAC__bool FLAC__seekable_stream_encoder_set_seek_callback(FLAC__SeekableStreamE
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderWriteStatus (*value)(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data));
FLAC__bool FLAC__seekable_stream_encoder_set_write_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__StreamEncoderWriteStatus (*value)(const FLAC__SeekableStreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data));
/** Set the client data to be passed back to callbacks.
* This value will be supplied to callbacks in their \a client_data
@@ -442,7 +476,7 @@ FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder,
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC__bool FLAC__stream_encoder_set_client_data(FLAC__StreamEncoder *encoder, void *value);
FLAC__bool FLAC__seekable_stream_encoder_set_client_data(FLAC__SeekableStreamEncoder *encoder, void *value);
/** Get the current encoder state.
*

397
src/libFLAC/seekable_stream_encoder.c
View File

@@ -24,6 +24,11 @@
#include "protected/seekable_stream_encoder.h"
#include "protected/stream_encoder.h"
#ifdef max
#undef max
#endif
#define max(a,b) ((a)>(b)?(a):(b))
/***********************************************************************
*
* Private class method prototypes
@@ -41,9 +46,15 @@ static void metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__S
***********************************************************************/
typedef struct FLAC__SeekableStreamEncoderPrivate {
FILE *file;
char *filename;
FLAC__SeekableStreamEncoderSeekStatus (*seek_callback)(const FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
FLAC__StreamEncoderWriteStatus (*write_callback)(const FLAC__SeekableStreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
void *client_data;
FLAC__StreamEncoder *stream_encoder;
FLAC__StreamMetadata_SeekTable *seek_table;
/* internal vars (all the above are class settings) */
unsigned first_seekpoint_to_check;
FLAC__uint64 stream_offset, seektable_offset;
FLAC__uint64 bytes_written;
} FLAC__SeekableStreamEncoderPrivate;
/***********************************************************************
@@ -55,18 +66,28 @@ typedef struct FLAC__SeekableStreamEncoderPrivate {
const char * const FLAC__SeekableStreamEncoderStateString[] = {
"FLAC__SEEKABLE_STREAM_ENCODER_OK",
"FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR",
"FLAC__SEEKABLE_STREAM_ENCODER_ERROR_OPENING_FILE",
"FLAC__SEEKABLE_STREAM_ENCODER_MEMORY_ALLOCATION_ERROR",
"FLAC__SEEKABLE_STREAM_ENCODER_READ_ERROR",
"FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR",
"FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR",
"FLAC__SEEKABLE_STREAM_ENCODER_ALREADY_INITIALIZED",
"FLAC__SEEKABLE_STREAM_ENCODER_INVALID_CALLBACK",
"FLAC__SEEKABLE_STREAM_ENCODER_INVALID_SEEKTABLE",
"FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED"
};
const char * const FLAC__SeekableStreamEncoderSeekStatusString[] = {
"FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK",
"FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_ERROR"
};
/***********************************************************************
*
* Class constructor/destructor
*
***********************************************************************/
FLAC__SeekableStreamEncoder *FLAC__seekable_stream_encoder_new()
{
FLAC__SeekableStreamEncoder *encoder;
@@ -134,13 +155,20 @@ FLAC__SeekableStreamEncoderState FLAC__seekable_stream_encoder_init(FLAC__Seekab
if(encoder->protected_->state != FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_ALREADY_INITIALIZED;
if(0 == encoder->private_->filename)
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_NO_FILENAME;
if(0 == encoder->private_->seek_callback || 0 == encoder->private_->write_callback)
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_INVALID_CALLBACK;
encoder->private_->file = fopen(encoder->private_->filename, "wb");
if(0 != encoder->private_->seek_table && !FLAC__format_seektable_is_legal(encoder->private_->seek_table))
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_INVALID_SEEKTABLE;
if(encoder->private_->file == 0)
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_ERROR_OPENING_FILE;
/*
* This must be done before we init the stream encoder because that
* calls the write_callback, which uses these values.
*/
encoder->private_->first_seekpoint_to_check = 0;
encoder->private_->stream_offset = 0;
encoder->private_->seektable_offset = 0;
encoder->private_->bytes_written = 0;
FLAC__stream_encoder_set_write_callback(encoder->private_->stream_encoder, write_callback_);
FLAC__stream_encoder_set_metadata_callback(encoder->private_->stream_encoder, metadata_callback_);
@@ -149,33 +177,31 @@ FLAC__SeekableStreamEncoderState FLAC__seekable_stream_encoder_init(FLAC__Seekab
if(FLAC__stream_encoder_init(encoder->private_->stream_encoder) != FLAC__STREAM_ENCODER_OK)
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR;
return decoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_OK;
/*
* Initializing the stream encoder writes all the metadata, so we
* save the stream offset now.
*/
encoder->private_->stream_offset = encoder->private_->bytes_written;
return encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_OK;
}
void FLAC__seekable_stream_encoder_finish(FLAC__SeekableStreamEncoder *encoder)
{
FLAC__ASSERT(0 != encoder);
FLAC__ASSERT(0 != encoder->private_);
FLAC__ASSERT(0 != encoder->protected_);
if(encoder->protected_->state == FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
return;
FLAC__ASSERT(0 != encoder->private_->stream_encoder);
if(0 != encoder->private_->file) {
fclose(encoder->private_->file);
encoder->private_->file = 0;
}
if(0 != encoder->private_->filename) {
free(encoder->private_->filename);
encoder->private_->filename = 0;
}
FLAC__stream_encoder_finish(encoder->private_->stream_encoder);
set_defaults_(encoder);
encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED;
return FLAC__stream_encoder_finish(encoder->private_->stream_encoder);
}
FLAC__bool FLAC__seekable_stream_encoder_set_streamable_subset(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value)
@@ -362,7 +388,16 @@ FLAC__bool FLAC__seekable_stream_encoder_set_metadata(FLAC__SeekableStreamEncode
FLAC__ASSERT(0 != encoder->private_->stream_encoder);
if(encoder->protected_->state != FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
return false;
return FLAC__stream_encoder_set_metadata(encoder->private_->stream_encoder, value);
if(0 != metadata && num_blocks > 0) {
unsigned i;
for(i = 0; i < num_blocks; i++) {
if(0 != metadata[i] && metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
encoder->private_->seek_table = &metadata[i]->data.seek_table;
break; /* take only the first one */
}
}
}
return FLAC__stream_encoder_set_metadata(encoder->private_->stream_encoder, metadata, num_blocks);
}
FLAC__bool FLAC__seekable_stream_encoder_set_seek_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__SeekableStreamEncoderSeekStatus (*value)(const FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data))
@@ -376,7 +411,7 @@ FLAC__bool FLAC__seekable_stream_encoder_set_seek_callback(FLAC__SeekableStreamE
return true;
}
FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderWriteStatus (*value)(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data))
FLAC__bool FLAC__seekable_stream_encoder_set_write_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__StreamEncoderWriteStatus (*value)(const FLAC__SeekableStreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data))
{
FLAC__ASSERT(0 != encoder);
FLAC__ASSERT(0 != encoder->private_);
@@ -387,7 +422,7 @@ FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder,
return true;
}
FLAC__bool FLAC__stream_encoder_set_client_data(FLAC__StreamEncoder *encoder, void *value)
FLAC__bool FLAC__seekable_stream_encoder_set_client_data(FLAC__SeekableStreamEncoder *encoder, void *value)
{
FLAC__ASSERT(0 != encoder);
FLAC__ASSERT(0 != encoder->private_);
@@ -544,206 +579,184 @@ void set_defaults_(FLAC__SeekableStreamEncoder *encoder)
FLAC__ASSERT(0 != encoder->private_);
FLAC__ASSERT(0 != encoder->protected_);
encoder->protected_->filename = 0;
encoder->private_->seek_callback = 0;
encoder->private_->write_callback = 0;
encoder->private_->client_data = 0;
encoder->private_->seek_table = 0;
}
FLAC__StreamEncoderWriteStatus write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
{
FLAC__SeekableStreamEncoder *seekable_stream_encoder = (FLAC__SeekableStreamEncoder*)client_data;
FLAC__StreamEncoderWriteStatus status;
/* mark the current seek point if hit (if stream_offset == 0 that means we're still writing metadata and haven't hit the first frame yet) */
if(seekable_stream_encoder->private_->stream_offset > 0 && seekable_stream_encoder->private_->seek_table.num_points > 0) {
FLAC__uint64 current_sample = (FLAC__uint64)current_frame * (FLAC__uint64)FLAC__stream_encoder_get_blocksize(encoder), test_sample;
unsigned i;
for(i = seekable_stream_encoder->private_->first_seek_point_to_check; i < seekable_stream_encoder->private_->seek_table.num_points; i++) {
test_sample = seekable_stream_encoder->private_->seek_table.points[i].sample_number;
if(test_sample > current_sample) {
break;
}
else if(test_sample == current_sample) {
seekable_stream_encoder->private_->seek_table.points[i].stream_offset = seekable_stream_encoder->private_->bytes_written - seekable_stream_encoder->private_->stream_offset;
seekable_stream_encoder->private_->seek_table.points[i].frame_samples = FLAC__stream_encoder_get_blocksize(encoder);
seekable_stream_encoder->private_->first_seek_point_to_check++;
break;
}
else {
seekable_stream_encoder->private_->first_seek_point_to_check++;
}
}
}
seekable_stream_encoder->private_->bytes_written += bytes;
seekable_stream_encoder->private_->samples_written += samples;
seekable_stream_encoder->private_->current_frame = current_frame;
if(samples && seekable_stream_encoder->private_->verbose && seekable_stream_encoder->private_->total_samples_to_encode > 0 && !(current_frame & mask))
print_stats(seekable_stream_encoder->private_);
if(seekable_stream_encoder->private_->verify) {
seekable_stream_encoder->private_->verify_fifo.encoded_signal = buffer;
seekable_stream_encoder->private_->verify_fifo.encoded_bytes = bytes;
if(seekable_stream_encoder->private_->verify_fifo.into_frames) {
if(!FLAC__stream_decoder_process_one_frame(seekable_stream_encoder->private_->verify_fifo.decoder)) {
seekable_stream_encoder->private_->verify_fifo.result = FLAC__VERIFY_FAILED_IN_FRAME;
return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
}
}
else {
if(!FLAC__stream_decoder_process_metadata(seekable_stream_encoder->private_->verify_fifo.decoder)) {
seekable_stream_encoder->private_->verify_fifo.result = FLAC__VERIFY_FAILED_IN_METADATA;
return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
}
}
}
#ifdef FLAC__HAS_OGG
if(seekable_stream_encoder->private_->use_ogg) {
ogg_packet op;
memset(&op, 0, sizeof(op));
op.packet = (unsigned char *)buffer;
op.granulepos = seekable_stream_encoder->private_->samples_written - 1;
/*@@@ WATCHOUT:
* this depends on the behavior of libFLAC that we will get one
* write_callback first with all the metadata (and 'samples'
* will be 0), then one write_callback for each frame.
/*
* Watch for the first SEEKTABLE block to go by and store its offset.
*/
op.packetno = (samples == 0? -1 : (int)seekable_stream_encoder->private_->current_frame);
op.bytes = bytes;
if(samples == 0 && (buffer[0] & 0x7f) == FLAC__METADATA_TYPE_SEEKTABLE)
seekable_stream_encoder->private_->seektable_offset = seekable_stream_encoder->private_->bytes_written;
if (seekable_stream_encoder->private_->bytes_written == bytes)
op.b_o_s = 1;
if (seekable_stream_encoder->private_->total_samples_to_encode == seekable_stream_encoder->private_->samples_written)
op.e_o_s = 1;
ogg_stream_packetin(&seekable_stream_encoder->private_->ogg.os, &op);
while(ogg_stream_pageout(&seekable_stream_encoder->private_->ogg.os, &seekable_stream_encoder->private_->ogg.og) != 0) {
int written;
written = fwrite(seekable_stream_encoder->private_->ogg.og.header, 1, seekable_stream_encoder->private_->ogg.og.header_len, seekable_stream_encoder->private_->fout);
if (written != seekable_stream_encoder->private_->ogg.og.header_len)
return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
written = fwrite(seekable_stream_encoder->private_->ogg.og.body, 1, seekable_stream_encoder->private_->ogg.og.body_len, seekable_stream_encoder->private_->fout);
if (written != seekable_stream_encoder->private_->ogg.og.body_len)
return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
/*
* Mark the current seek point if hit (if stream_offset == 0 that
* means we're still writing metadata and haven't hit the first
* frame yet)
*/
if(seekable_stream_encoder->private_->stream_offset > 0 && seekable_stream_encoder->private_->seek_table->num_points > 0) {
/*@@@ WATCHOUT: assumes the encoder is fixed-blocksize, which will be true indefinitely: */
const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
const FLAC__uint64 frame_first_sample = (FLAC__uint64)current_frame * (FLAC__uint64)blocksize;
const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
FLAC__uint64 test_sample;
unsigned i;
for(i = seekable_stream_encoder->private_->first_seekpoint_to_check; i < seekable_stream_encoder->private_->seek_table->num_points; i++) {
test_sample = seekable_stream_encoder->private_->seek_table->points[i].sample_number;
if(test_sample > frame_last_sample) {
break;
}
else if(test_sample >= frame_first_sample) {
seekable_stream_encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
seekable_stream_encoder->private_->seek_table->points[i].stream_offset = seekable_stream_encoder->private_->bytes_written - seekable_stream_encoder->private_->stream_offset;
seekable_stream_encoder->private_->seek_table->points[i].frame_samples = blocksize;
seekable_stream_encoder->private_->first_seekpoint_to_check++;
/* DO NOT: "break;" and here's why:
* The seektable template may contain more than one target
* sample for any given frame; we will keep looping, generating
* duplicate seekpoints for them, and we'll clean it up later,
* just before writing the seektable back to the metadata.
*/
}
else {
seekable_stream_encoder->private_->first_seekpoint_to_check++;
}
}
}
return FLAC__STREAM_ENCODER_WRITE_OK;
}
status = seekable_stream_encoder->private_->write_callback(seekable_stream_encoder, buffer, bytes, samples, current_frame, seekable_stream_encoder->private_->client_data);
if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK)
seekable_stream_encoder->private_->bytes_written += bytes;
else
#endif
{
if(fwrite(buffer, sizeof(FLAC__byte), bytes, seekable_stream_encoder->private_->fout) == bytes)
return FLAC__STREAM_ENCODER_WRITE_OK;
else
return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
}
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR;
return status;
}
void metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
seekable_stream_encoder->private_ *seekable_stream_encoder->private_ = (seekable_stream_encoder->private_ *)client_data;
FLAC__byte b;
FILE *f = seekable_stream_encoder->private_->fout;
FLAC__SeekableStreamEncoder *seekable_stream_encoder = (FLAC__SeekableStreamEncoder*)client_data;
FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
const unsigned min_framesize = metadata->data.stream_info.min_framesize;
const unsigned max_framesize = metadata->data.stream_info.max_framesize;
const unsigned bps = metadata->data.stream_info.bits_per_sample;
FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
/*
* If we are writing to an ogg stream, there is no need to go back
* and update the STREAMINFO or SEEKTABLE blocks; the values we would
* update are not necessary with Ogg as the transport. We can't do
* it reliably anyway without knowing the Ogg structure.
*/
#ifdef FLAC__HAS_OGG
if(seekable_stream_encoder->private_->use_ogg)
return;
#endif
/*
* we get called by the encoder when the encoding process has
* finished so that we can update the STREAMINFO and SEEKTABLE
/* We get called by the stream encoder when the encoding process
* has finished so that we can update the STREAMINFO and SEEKTABLE
* blocks.
*/
(void)encoder; /* silence compiler warning about unused parameter */
if(f != stdout) {
fclose(seekable_stream_encoder->private_->fout);
if(0 == (f = fopen(seekable_stream_encoder->private_->outfilename, "r+b")))
return;
}
/*@@@ reopen callback here? */
/* all this is based on intimate knowledge of the stream header
/* All this is based on intimate knowledge of the stream header
* layout, but a change to the header format that would break this
* would also break all streams encoded in the previous format.
*/
if(-1 == fseek(f, 26, SEEK_SET)) goto end_;
fwrite(metadata->data.stream_info.md5sum, 1, 16, f);
/* if we get this far we know we can seek so no need to check the
* return value from fseek()
/*
* Write MD5 signature
*/
fseek(f, 21, SEEK_SET);
if(fread(&b, 1, 1, f) != 1) goto framesize_;
fseek(f, 21, SEEK_SET);
b = (b & 0xf0) | (FLAC__byte)((samples >> 32) & 0x0F);
if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
b = (FLAC__byte)((samples >> 24) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
b = (FLAC__byte)((samples >> 16) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
b = (FLAC__byte)((samples >> 8) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
b = (FLAC__byte)(samples & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
framesize_:
fseek(f, 12, SEEK_SET);
b = (FLAC__byte)((min_framesize >> 16) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
b = (FLAC__byte)((min_framesize >> 8) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
b = (FLAC__byte)(min_framesize & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
b = (FLAC__byte)((max_framesize >> 16) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
b = (FLAC__byte)((max_framesize >> 8) & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
b = (FLAC__byte)(max_framesize & 0xFF);
if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
seektable_:
if(seekable_stream_encoder->private_->seek_table.num_points > 0) {
long pos;
unsigned i;
/* convert any unused seek points to placeholders */
for(i = 0; i < seekable_stream_encoder->private_->seek_table.num_points; i++) {
if(seekable_stream_encoder->private_->seek_table.points[i].sample_number == FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER)
break;
else if(seekable_stream_encoder->private_->seek_table.points[i].frame_samples == 0)
seekable_stream_encoder->private_->seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
}
/* the offset of the seek table data 'pos' should be after then stream sync and STREAMINFO block and SEEKTABLE header */
pos = (FLAC__STREAM_SYNC_LEN + FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
pos += metadata->length;
pos += (FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
fseek(f, pos, SEEK_SET);
for(i = 0; i < seekable_stream_encoder->private_->seek_table.num_points; i++) {
if(!write_big_endian_uint64(f, seekable_stream_encoder->private_->seek_table.points[i].sample_number)) goto end_;
if(!write_big_endian_uint64(f, seekable_stream_encoder->private_->seek_table.points[i].stream_offset)) goto end_;
if(!write_big_endian_uint16(f, (FLAC__uint16)seekable_stream_encoder->private_->seek_table.points[i].frame_samples)) goto end_;
}
}
end_:
fclose(f);
if(seekable_stream_encoder->private_->seek_callback(seekable_stream_encoder, 26, seekable_stream_encoder->private_->client_data) != FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR;
return;
}
if(seekable_stream_encoder->private_->write_callback(seekable_stream_encoder, metadata->data.stream_info.md5sum, 16, 0, 0, seekable_stream_encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR;
return;
}
/*
* Write total samples
*/
b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
b[4] = (FLAC__byte)(samples & 0xFF);
if(seekable_stream_encoder->private_->seek_callback(seekable_stream_encoder, 21, seekable_stream_encoder->private_->client_data) != FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR;
return;
}
if(seekable_stream_encoder->private_->write_callback(seekable_stream_encoder, b, 5, 0, 0, seekable_stream_encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR;
return;
}
/*
* Write min/max framesize
*/
b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
b[2] = (FLAC__byte)(min_framesize & 0xFF);
b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
b[5] = (FLAC__byte)(max_framesize & 0xFF);
if(seekable_stream_encoder->private_->seek_callback(seekable_stream_encoder, 12, seekable_stream_encoder->private_->client_data) != FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR;
return;
}
if(seekable_stream_encoder->private_->write_callback(seekable_stream_encoder, b, 6, 0, 0, seekable_stream_encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR;
return;
}
/*
* Write seektable
*/
if(seekable_stream_encoder->private_->seek_table->num_points > 0 && seekable_stream_encoder->private_->seektable_offset > 0) {
unsigned i;
FLAC__format_seektable_sort(seekable_stream_encoder->private_->seek_table);
FLAC__ASSERT(FLAC__format_seektable_is_legal(seekable_stream_encoder->private_->seek_table));
if(seekable_stream_encoder->private_->seek_callback(seekable_stream_encoder, seekable_stream_encoder->private_->seektable_offset, seekable_stream_encoder->private_->client_data) != FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR;
return;
}
for(i = 0; i < seekable_stream_encoder->private_->seek_table->num_points; i++) {
FLAC__uint64 xx;
unsigned x;
xx = seekable_stream_encoder->private_->seek_table->points[i].sample_number;
b[7] = (FLAC__byte)xx; xx >>= 8;
b[6] = (FLAC__byte)xx; xx >>= 8;
b[5] = (FLAC__byte)xx; xx >>= 8;
b[4] = (FLAC__byte)xx; xx >>= 8;
b[3] = (FLAC__byte)xx; xx >>= 8;
b[2] = (FLAC__byte)xx; xx >>= 8;
b[1] = (FLAC__byte)xx; xx >>= 8;
b[0] = (FLAC__byte)xx; xx >>= 8;
xx = seekable_stream_encoder->private_->seek_table->points[i].stream_offset;
b[15] = (FLAC__byte)xx; xx >>= 8;
b[14] = (FLAC__byte)xx; xx >>= 8;
b[13] = (FLAC__byte)xx; xx >>= 8;
b[12] = (FLAC__byte)xx; xx >>= 8;
b[11] = (FLAC__byte)xx; xx >>= 8;
b[10] = (FLAC__byte)xx; xx >>= 8;
b[9] = (FLAC__byte)xx; xx >>= 8;
b[8] = (FLAC__byte)xx; xx >>= 8;
x = seekable_stream_encoder->private_->seek_table->points[i].frame_samples;
b[17] = (FLAC__byte)x; x >>= 8;
b[16] = (FLAC__byte)x; x >>= 8;
if(seekable_stream_encoder->private_->write_callback(seekable_stream_encoder, b, 18, 0, 0, seekable_stream_encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
seekable_stream_encoder->protected_->state = FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR;
return;
}
}
}
}