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rename ENCODING to STREAMINFO; add PADDING block support

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This commit is contained in:
Josh Coalson 2001-02-23 21:05:05 +00:00
parent 40b1f179d1
commit c692d3800a
1 changed files with 28 additions and 18 deletions
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46
src/libFLAC/encoder.c
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@ -246,6 +246,7 @@ void FLAC__encoder_free_instance(FLAC__Encoder *encoder)
FLAC__EncoderState FLAC__encoder_init(FLAC__Encoder *encoder, FLAC__EncoderWriteStatus (*write_callback)(const FLAC__Encoder *encoder, const byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data), void (*metadata_callback)(const FLAC__Encoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data), void *client_data)
{
unsigned i;
FLAC__StreamMetaData padding;
assert(sizeof(int) >= 4); /* we want to die right away if this is not true */
assert(encoder != 0);
@ -376,31 +377,40 @@ FLAC__EncoderState FLAC__encoder_init(FLAC__Encoder *encoder, FLAC__EncoderWrite
if(!FLAC__bitbuffer_write_raw_uint32(&encoder->guts->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN))
return encoder->state = FLAC__ENCODER_FRAMING_ERROR;
encoder->guts->metadata.type = FLAC__METADATA_TYPE_ENCODING;
encoder->guts->metadata.is_last = true;
encoder->guts->metadata.length = FLAC__STREAM_METADATA_ENCODING_LENGTH;
encoder->guts->metadata.data.encoding.min_blocksize = encoder->blocksize; /* this encoder uses the same blocksize for the whole stream */
encoder->guts->metadata.data.encoding.max_blocksize = encoder->blocksize;
encoder->guts->metadata.data.encoding.min_framesize = 0; /* we don't know this yet; have to fill it in later */
encoder->guts->metadata.data.encoding.max_framesize = 0; /* we don't know this yet; have to fill it in later */
encoder->guts->metadata.data.encoding.sample_rate = encoder->sample_rate;
encoder->guts->metadata.data.encoding.channels = encoder->channels;
encoder->guts->metadata.data.encoding.bits_per_sample = encoder->bits_per_sample;
encoder->guts->metadata.data.encoding.total_samples = encoder->total_samples_estimate; /* we will replace this later with the real total */
memset(encoder->guts->metadata.data.encoding.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
encoder->guts->metadata.type = FLAC__METADATA_TYPE_STREAMINFO;
encoder->guts->metadata.is_last = (encoder->padding == 0);
encoder->guts->metadata.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
encoder->guts->metadata.data.stream_info.min_blocksize = encoder->blocksize; /* this encoder uses the same blocksize for the whole stream */
encoder->guts->metadata.data.stream_info.max_blocksize = encoder->blocksize;
encoder->guts->metadata.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
encoder->guts->metadata.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
encoder->guts->metadata.data.stream_info.sample_rate = encoder->sample_rate;
encoder->guts->metadata.data.stream_info.channels = encoder->channels;
encoder->guts->metadata.data.stream_info.bits_per_sample = encoder->bits_per_sample;
encoder->guts->metadata.data.stream_info.total_samples = encoder->total_samples_estimate; /* we will replace this later with the real total */
memset(encoder->guts->metadata.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
MD5Init(&encoder->guts->md5context);
if(!FLAC__add_metadata_block(&encoder->guts->metadata, &encoder->guts->frame))
return encoder->state = FLAC__ENCODER_FRAMING_ERROR;
/* add a PADDING block if requested */
if(encoder->padding > 0) {
padding.type = FLAC__METADATA_TYPE_PADDING;
padding.is_last = true;
padding.length = encoder->padding;
if(!FLAC__add_metadata_block(&padding, &encoder->guts->frame))
return encoder->state = FLAC__ENCODER_FRAMING_ERROR;
}
assert(encoder->guts->frame.bits == 0); /* assert that we're byte-aligned before writing */
assert(encoder->guts->frame.total_consumed_bits == 0); /* assert that no reading of the buffer was done */
if(encoder->guts->write_callback(encoder, encoder->guts->frame.buffer, encoder->guts->frame.bytes, 0, encoder->guts->current_frame_number, encoder->guts->client_data) != FLAC__ENCODER_WRITE_OK)
return encoder->state = FLAC__ENCODER_FATAL_ERROR_WHILE_WRITING;
/* now that the metadata block is written, we can init this to an absurdly-high value... */
encoder->guts->metadata.data.encoding.min_framesize = (1u << FLAC__STREAM_METADATA_ENCODING_MIN_FRAME_SIZE_LEN) - 1;
encoder->guts->metadata.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
/* ... and clear this to 0 */
encoder->guts->metadata.data.encoding.total_samples = 0;
encoder->guts->metadata.data.stream_info.total_samples = 0;
return encoder->state;
}
@ -416,7 +426,7 @@ void FLAC__encoder_finish(FLAC__Encoder *encoder)
encoder->blocksize = encoder->guts->current_sample_number;
encoder_process_frame_(encoder, true); /* true => is last frame */
}
MD5Final(encoder->guts->metadata.data.encoding.md5sum, &encoder->guts->md5context);
MD5Final(encoder->guts->metadata.data.stream_info.md5sum, &encoder->guts->md5context);
encoder->guts->metadata_callback(encoder, &encoder->guts->metadata, encoder->guts->client_data);
if(encoder->guts != 0) {
for(i = 0; i < encoder->channels; i++) {
@ -602,9 +612,9 @@ bool encoder_process_frame_(FLAC__Encoder *encoder, bool is_last_frame)
encoder->guts->current_frame_can_do_mid_side = true;
encoder->guts->current_sample_number = 0;
encoder->guts->current_frame_number++;
encoder->guts->metadata.data.encoding.total_samples += (uint64)encoder->blocksize;
encoder->guts->metadata.data.encoding.min_framesize = min(encoder->guts->frame.bytes, encoder->guts->metadata.data.encoding.min_framesize);
encoder->guts->metadata.data.encoding.max_framesize = max(encoder->guts->frame.bytes, encoder->guts->metadata.data.encoding.max_framesize);
encoder->guts->metadata.data.stream_info.total_samples += (uint64)encoder->blocksize;
encoder->guts->metadata.data.stream_info.min_framesize = min(encoder->guts->frame.bytes, encoder->guts->metadata.data.stream_info.min_framesize);
encoder->guts->metadata.data.stream_info.max_framesize = max(encoder->guts->frame.bytes, encoder->guts->metadata.data.stream_info.max_framesize);
return true;
}