コード例 #1
0
OggFLAC_API OggFLAC__SeekableStreamEncoderState OggFLAC__seekable_stream_encoder_init(OggFLAC__SeekableStreamEncoder *encoder)
{
	FLAC__ASSERT(0 != encoder);

	if(encoder->protected_->state != OggFLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
		return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_ALREADY_INITIALIZED;

	if(0 == encoder->private_->seek_callback || 0 == encoder->private_->tell_callback || 0 == encoder->private_->write_callback)
		return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_INVALID_CALLBACK;

	if(!OggFLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect))
			return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_OGG_ERROR;

	if(0 != encoder->private_->seek_table && !FLAC__format_seektable_is_legal(encoder->private_->seek_table))
		return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_INVALID_SEEKTABLE;

	/*
	 * These 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_->samples_written = 0;
	encoder->protected_->streaminfo_offset = 0;
	encoder->protected_->seektable_offset = 0;
	encoder->protected_->audio_offset = 0;

	FLAC__stream_encoder_set_write_callback(encoder->private_->FLAC_stream_encoder, write_callback_);
	FLAC__stream_encoder_set_metadata_callback(encoder->private_->FLAC_stream_encoder, metadata_callback_);
	FLAC__stream_encoder_set_client_data(encoder->private_->FLAC_stream_encoder, encoder);

	if(FLAC__stream_encoder_init(encoder->private_->FLAC_stream_encoder) != FLAC__STREAM_ENCODER_OK)
		return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_FLAC_STREAM_ENCODER_ERROR;

	/*
	 * Initializing the stream encoder writes all the metadata, so we
	 * save the stream offset now.
	 */
	if(encoder->private_->tell_callback(encoder, &encoder->protected_->audio_offset, encoder->private_->client_data) != FLAC__SEEKABLE_STREAM_ENCODER_TELL_STATUS_OK)
		return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_TELL_ERROR;

	return encoder->protected_->state = OggFLAC__SEEKABLE_STREAM_ENCODER_OK;
}
コード例 #2
0
ファイル: flac_a.c プロジェクト: ranvis/tina
static int flac_output_open(const char *fname, const char *comment)
{
  int fd;
  int nch;
  FLAC__StreamMetadata padding;
  FLAC__StreamMetadata *metadata[4];
  int num_metadata = 0;
#ifndef LEGACY_FLAC
  FLAC__StreamEncoderInitStatus init_status;
#endif

  FLAC_ctx *ctx;

  if (flac_ctx == NULL)
    flac_session_close();

  if (!(flac_ctx = (FLAC_ctx *)calloc(sizeof(FLAC_ctx), 1))) {
    ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s", strerror(errno));
    return -1;
  }

  ctx = flac_ctx;

  ctx->in_bytes = ctx->out_bytes = 0;

  if(strcmp(fname, "-") == 0) {
    fd = 1; /* data to stdout */
    if (comment == NULL)
      comment = "(stdout)";
  }
  else {
    /* Open the audio file */
    fd = open(fname, FILE_OUTPUT_MODE);
    if(fd < 0) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: %s",
		fname, strerror(errno));
      return -1;
    }
    if(comment == NULL)
      comment = fname;
  }

  dpm.fd = fd;
  nch = (dpm.encoding & PE_MONO) ? 1 : 2;

  if (0 < flac_options.padding) {
    padding.is_last = 0;
    padding.type = FLAC__METADATA_TYPE_PADDING;
    padding.length = flac_options.padding;
    metadata[num_metadata++] = &padding;
  }

#ifdef LEGACY_FLAC
#ifdef AU_OGGFLAC
  if (flac_options.isogg) {
    if ((ctx->encoder.ogg.stream = OggFLAC__stream_encoder_new()) == NULL) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create OggFLAC stream");
      flac_session_close();
      return -1;
    }

    OggFLAC__stream_encoder_set_channels(ctx->encoder.ogg.stream, nch);
    /* 16bps only */
    OggFLAC__stream_encoder_set_bits_per_sample(ctx->encoder.ogg.stream, 16);

    /* set sequential number for serial */
    serial_number++;
    if (serial_number == 1) {
      srand(time(NULL));
      serial_number = rand();
    }
    OggFLAC__stream_encoder_set_serial_number(ctx->encoder.ogg.stream, serial_number);

    OggFLAC__stream_encoder_set_verify(ctx->encoder.ogg.stream, flac_options.verify);

    if (!FLAC__format_sample_rate_is_valid(dpm.rate)) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "invalid sampling rate %d",
		dpm.rate);
      flac_session_close();
      return -1;
    }
    OggFLAC__stream_encoder_set_sample_rate(ctx->encoder.ogg.stream, dpm.rate);

    OggFLAC__stream_encoder_set_qlp_coeff_precision(ctx->encoder.ogg.stream, flac_options.qlp_coeff_precision);
    /* expensive! */
    OggFLAC__stream_encoder_set_do_qlp_coeff_prec_search(ctx->encoder.ogg.stream, flac_options.qlp_coeff_precision_search);

    if (nch == 2) {
      OggFLAC__stream_encoder_set_do_mid_side_stereo(ctx->encoder.ogg.stream, flac_options.mid_side);
      OggFLAC__stream_encoder_set_loose_mid_side_stereo(ctx->encoder.ogg.stream, flac_options.adaptive_mid_side);
    }

    OggFLAC__stream_encoder_set_max_lpc_order(ctx->encoder.ogg.stream, flac_options.max_lpc_order);
    OggFLAC__stream_encoder_set_min_residual_partition_order(ctx->encoder.ogg.stream, flac_options.min_residual_partition_order);
    OggFLAC__stream_encoder_set_max_residual_partition_order(ctx->encoder.ogg.stream, flac_options.max_residual_partition_order);

    OggFLAC__stream_encoder_set_blocksize(ctx->encoder.ogg.stream, flac_options.blocksize);

    OggFLAC__stream_encoder_set_client_data(ctx->encoder.ogg.stream, ctx);

    if (0 < num_metadata)
      OggFLAC__stream_encoder_set_metadata(ctx->encoder.ogg.stream, metadata, num_metadata);

    /* set callback */
    OggFLAC__stream_encoder_set_write_callback(ctx->encoder.ogg.stream, ogg_stream_encoder_write_callback);

    ctx->state.ogg = OggFLAC__stream_encoder_init(ctx->encoder.ogg.stream);
    if (ctx->state.ogg != OggFLAC__STREAM_ENCODER_OK) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create OggFLAC state (%s)",
		OggFLAC__StreamEncoderStateString[ctx->state.ogg]);
      flac_session_close();
      return -1;
    }
  }
  else
#endif /* AU_OGGFLAC */
  if (flac_options.seekable) {
    if ((ctx->encoder.flac.s_stream = FLAC__seekable_stream_encoder_new()) == NULL) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC stream");
      flac_session_close();
      return -1;
    }

    FLAC__seekable_stream_encoder_set_channels(ctx->encoder.flac.s_stream, nch);
    /* 16bps only */
    FLAC__seekable_stream_encoder_set_bits_per_sample(ctx->encoder.flac.s_stream, 16);

    FLAC__seekable_stream_encoder_set_verify(ctx->encoder.flac.s_stream, flac_options.verify);

    if (!FLAC__format_sample_rate_is_valid(dpm.rate)) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "invalid sampling rate %d",
		dpm.rate);
      flac_session_close();
      return -1;
    }
    FLAC__seekable_stream_encoder_set_sample_rate(ctx->encoder.flac.s_stream, dpm.rate);

    FLAC__seekable_stream_encoder_set_qlp_coeff_precision(ctx->encoder.flac.s_stream, flac_options.qlp_coeff_precision);
    /* expensive! */
    FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search(ctx->encoder.flac.s_stream, flac_options.qlp_coeff_precision_search);

    if (nch == 2) {
      FLAC__seekable_stream_encoder_set_do_mid_side_stereo(ctx->encoder.flac.s_stream, flac_options.mid_side);
      FLAC__seekable_stream_encoder_set_loose_mid_side_stereo(ctx->encoder.flac.s_stream, flac_options.adaptive_mid_side);
    }

    FLAC__seekable_stream_encoder_set_max_lpc_order(ctx->encoder.flac.s_stream, flac_options.max_lpc_order);
    FLAC__seekable_stream_encoder_set_min_residual_partition_order(ctx->encoder.flac.s_stream, flac_options.min_residual_partition_order);
    FLAC__seekable_stream_encoder_set_max_residual_partition_order(ctx->encoder.flac.s_stream, flac_options.max_residual_partition_order);

    FLAC__seekable_stream_encoder_set_blocksize(ctx->encoder.flac.s_stream, flac_options.blocksize);
    FLAC__seekable_stream_encoder_set_client_data(ctx->encoder.flac.s_stream, ctx);

    if (0 < num_metadata)
      FLAC__seekable_stream_encoder_set_metadata(ctx->encoder.flac.s_stream, metadata, num_metadata);

    /* set callback */
/*    FLAC__seekable_stream_encoder_set_metadata_callback(ctx->encoder.flac.s_stream, flac_seekable_stream_encoder_metadata_callback); /* */
#if (!defined(__BORLANDC__) && !defined(__POCC__))
    FLAC__stream_encoder_set_metadata_callback(ctx->encoder.flac.s_stream, flac_seekable_stream_encoder_metadata_callback); /* */
#endif
    FLAC__seekable_stream_encoder_set_write_callback(ctx->encoder.flac.s_stream, flac_seekable_stream_encoder_write_callback);

    ctx->state.s_flac = FLAC__seekable_stream_encoder_init(ctx->encoder.flac.s_stream);
    if (ctx->state.s_flac != FLAC__SEEKABLE_STREAM_ENCODER_OK) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC state (%s)",
		FLAC__SeekableStreamEncoderStateString[ctx->state.s_flac]);
      flac_session_close();
      return -1;
    }
	}
	else
  {
    if ((ctx->encoder.flac.stream = FLAC__stream_encoder_new()) == NULL) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC stream");
      flac_session_close();
      return -1;
    }

    FLAC__stream_encoder_set_channels(ctx->encoder.flac.stream, nch);
    /* 16bps only */
    FLAC__stream_encoder_set_bits_per_sample(ctx->encoder.flac.stream, 16);

    FLAC__stream_encoder_set_verify(ctx->encoder.flac.stream, flac_options.verify);

    if (!FLAC__format_sample_rate_is_valid(dpm.rate)) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "invalid sampling rate %d",
		dpm.rate);
      flac_session_close();
      return -1;
    }
    FLAC__stream_encoder_set_sample_rate(ctx->encoder.flac.stream, dpm.rate);

    FLAC__stream_encoder_set_qlp_coeff_precision(ctx->encoder.flac.stream, flac_options.qlp_coeff_precision);
    /* expensive! */
    FLAC__stream_encoder_set_do_qlp_coeff_prec_search(ctx->encoder.flac.stream, flac_options.qlp_coeff_precision_search);

    if (nch == 2) {
      FLAC__stream_encoder_set_do_mid_side_stereo(ctx->encoder.flac.stream, flac_options.mid_side);
      FLAC__stream_encoder_set_loose_mid_side_stereo(ctx->encoder.flac.stream, flac_options.adaptive_mid_side);
    }

    FLAC__stream_encoder_set_max_lpc_order(ctx->encoder.flac.stream, flac_options.max_lpc_order);
    FLAC__stream_encoder_set_min_residual_partition_order(ctx->encoder.flac.stream, flac_options.min_residual_partition_order);
    FLAC__stream_encoder_set_max_residual_partition_order(ctx->encoder.flac.stream, flac_options.max_residual_partition_order);

    FLAC__stream_encoder_set_blocksize(ctx->encoder.flac.stream, flac_options.blocksize);
    FLAC__stream_encoder_set_client_data(ctx->encoder.flac.stream, ctx);

    if (0 < num_metadata)
      FLAC__stream_encoder_set_metadata(ctx->encoder.flac.stream, metadata, num_metadata);

    /* set callback */
    FLAC__stream_encoder_set_metadata_callback(ctx->encoder.flac.stream, flac_stream_encoder_metadata_callback);
    FLAC__stream_encoder_set_write_callback(ctx->encoder.flac.stream, flac_stream_encoder_write_callback);

    ctx->state.flac = FLAC__stream_encoder_init(ctx->encoder.flac.stream);
    if (ctx->state.flac != FLAC__STREAM_ENCODER_OK) {
      ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC state (%s)",
		FLAC__StreamEncoderStateString[ctx->state.flac]);
      flac_session_close();
      return -1;
    }
  }
#else /* !LEGACY_FLAC */
	if ((ctx->encoder.flac.stream = FLAC__stream_encoder_new()) == NULL) {
		ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC stream");
		flac_session_close();
		return -1;
	}

#ifdef AU_OGGFLAC
  if (flac_options.isogg) {
    /* set sequential number for serial */
    serial_number++;
    if (serial_number == 1) {
      srand(time(NULL));
      serial_number = rand();
    }
    FLAC__stream_encoder_set_ogg_serial_number(ctx->encoder.flac.stream, serial_number);
  }
#endif /* AU_OGGFLAC */
	FLAC__stream_encoder_set_channels(ctx->encoder.flac.stream, nch);
	/* 16bps only */
	FLAC__stream_encoder_set_bits_per_sample(ctx->encoder.flac.stream, 16);

	FLAC__stream_encoder_set_verify(ctx->encoder.flac.stream, flac_options.verify);

	if (!FLAC__format_sample_rate_is_valid(dpm.rate)) {
		ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "invalid sampling rate %d", dpm.rate);
		flac_session_close();
		return -1;
	}
	FLAC__stream_encoder_set_sample_rate(ctx->encoder.flac.stream, dpm.rate);

	FLAC__stream_encoder_set_qlp_coeff_precision(ctx->encoder.flac.stream, flac_options.qlp_coeff_precision);
	/* expensive! */
	FLAC__stream_encoder_set_do_qlp_coeff_prec_search(ctx->encoder.flac.stream, flac_options.qlp_coeff_precision_search);

	if (nch == 2) {
		FLAC__stream_encoder_set_do_mid_side_stereo(ctx->encoder.flac.stream, flac_options.mid_side);
		FLAC__stream_encoder_set_loose_mid_side_stereo(ctx->encoder.flac.stream, flac_options.adaptive_mid_side);
	}

	FLAC__stream_encoder_set_max_lpc_order(ctx->encoder.flac.stream, flac_options.max_lpc_order);
	FLAC__stream_encoder_set_min_residual_partition_order(ctx->encoder.flac.stream, flac_options.min_residual_partition_order);
	FLAC__stream_encoder_set_max_residual_partition_order(ctx->encoder.flac.stream, flac_options.max_residual_partition_order);

	FLAC__stream_encoder_set_blocksize(ctx->encoder.flac.stream, flac_options.blocksize);

	if (0 < num_metadata)
		FLAC__stream_encoder_set_metadata(ctx->encoder.flac.stream, metadata, num_metadata);

#ifdef AU_OGGFLAC
  if (flac_options.isogg)
		init_status = FLAC__stream_encoder_init_ogg_stream(ctx->encoder.flac.stream, flac_stream_encoder_write_callback, NULL, NULL, NULL, ctx);
  else
#endif
	init_status = FLAC__stream_encoder_init_stream(ctx->encoder.flac.stream, flac_stream_encoder_write_callback, NULL, NULL, NULL, ctx);
	if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
		ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "cannot create FLAC encoder (init status: %s)", FLAC__StreamEncoderInitStatusString[init_status]);
		flac_session_close();
		return -1;
	}
#endif

  return 0;
}
コード例 #3
0
ファイル: SampleBuffer.cpp プロジェクト: floft/lmms
QString & SampleBuffer::toBase64( QString & _dst ) const
{
#ifdef LMMS_HAVE_FLAC_STREAM_ENCODER_H
	const f_cnt_t FRAMES_PER_BUF = 1152;

	FLAC__StreamEncoder * flac_enc = FLAC__stream_encoder_new();
	FLAC__stream_encoder_set_channels( flac_enc, DEFAULT_CHANNELS );
	FLAC__stream_encoder_set_blocksize( flac_enc, FRAMES_PER_BUF );
/*	FLAC__stream_encoder_set_do_exhaustive_model_search( flac_enc, true );
	FLAC__stream_encoder_set_do_mid_side_stereo( flac_enc, true );*/
	FLAC__stream_encoder_set_sample_rate( flac_enc,
					engine::mixer()->sampleRate() );
	QBuffer ba_writer;
	ba_writer.open( QBuffer::WriteOnly );

	FLAC__stream_encoder_set_write_callback( flac_enc,
					flacStreamEncoderWriteCallback );
	FLAC__stream_encoder_set_metadata_callback( flac_enc,
					flacStreamEncoderMetadataCallback );
	FLAC__stream_encoder_set_client_data( flac_enc, &ba_writer );
	if( FLAC__stream_encoder_init( flac_enc ) != FLAC__STREAM_ENCODER_OK )
	{
		printf( "error within FLAC__stream_encoder_init()!\n" );
	}
	f_cnt_t frame_cnt = 0;
	while( frame_cnt < m_frames )
	{
		f_cnt_t remaining = qMin<f_cnt_t>( FRAMES_PER_BUF,
							m_frames - frame_cnt );
		FLAC__int32 buf[FRAMES_PER_BUF * DEFAULT_CHANNELS];
		for( f_cnt_t f = 0; f < remaining; ++f )
		{
			for( ch_cnt_t ch = 0; ch < DEFAULT_CHANNELS; ++ch )
			{
				buf[f*DEFAULT_CHANNELS+ch] = (FLAC__int32)(
					Mixer::clip( m_data[f+frame_cnt][ch] ) *
						OUTPUT_SAMPLE_MULTIPLIER );
			}
		}
		FLAC__stream_encoder_process_interleaved( flac_enc, buf,
								remaining );
		frame_cnt += remaining;
	}
	FLAC__stream_encoder_finish( flac_enc );
	FLAC__stream_encoder_delete( flac_enc );
	printf("%d %d\n", frame_cnt, (int)ba_writer.size() );
	ba_writer.close();

	base64::encode( ba_writer.buffer().data(), ba_writer.buffer().size(),
									_dst );


#else	/* LMMS_HAVE_FLAC_STREAM_ENCODER_H */

	base64::encode( (const char *) m_data,
					m_frames * sizeof( sampleFrame ), _dst );

#endif	/* LMMS_HAVE_FLAC_STREAM_ENCODER_H */

	return _dst;
}
コード例 #4
0
ファイル: flac.c プロジェクト: Emisense/eTracks
static int start_write(sox_format_t * const ft)
{
  priv_t * p = (priv_t *)ft->priv;
  FLAC__StreamEncoderState status;
  unsigned compression_level = MAX_COMPRESSION; /* Default to "best" */

  if (ft->encoding.compression != HUGE_VAL) {
    compression_level = ft->encoding.compression;
    if (compression_level != ft->encoding.compression ||
        compression_level > MAX_COMPRESSION) {
      lsx_fail_errno(ft, SOX_EINVAL,
                 "FLAC compression level must be a whole number from 0 to %i",
                 MAX_COMPRESSION);
      return SOX_EOF;
    }
  }

  p->encoder = FLAC__stream_encoder_new();
  if (p->encoder == NULL) {
    lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder instance");
    return SOX_EOF;
  }
  p->decoded_samples = lsx_malloc(sox_globals.bufsiz * sizeof(FLAC__int32));

  p->bits_per_sample = ft->encoding.bits_per_sample;

  lsx_report("encoding at %i bits per sample", p->bits_per_sample);

  FLAC__stream_encoder_set_channels(p->encoder, ft->signal.channels);
  FLAC__stream_encoder_set_bits_per_sample(p->encoder, p->bits_per_sample);
  FLAC__stream_encoder_set_sample_rate(p->encoder, (unsigned)(ft->signal.rate + .5));

  { /* Check if rate is streamable: */
    static const unsigned streamable_rates[] =
      {8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000};
    size_t i;
    sox_bool streamable = sox_false;
    for (i = 0; !streamable && i < array_length(streamable_rates); ++i)
       streamable = (streamable_rates[i] == ft->signal.rate);
    if (!streamable) {
      lsx_report("non-standard rate; output may not be streamable");
      FLAC__stream_encoder_set_streamable_subset(p->encoder, sox_false);
    }
  }

#if FLAC_API_VERSION_CURRENT >= 10
  FLAC__stream_encoder_set_compression_level(p->encoder, compression_level);
#else
  {
    static struct {
      unsigned blocksize;
      FLAC__bool do_exhaustive_model_search;
      FLAC__bool do_mid_side_stereo;
      FLAC__bool loose_mid_side_stereo;
      unsigned max_lpc_order;
      unsigned max_residual_partition_order;
      unsigned min_residual_partition_order;
    } const options[MAX_COMPRESSION + 1] = {
      {1152, sox_false, sox_false, sox_false, 0, 2, 2},
      {1152, sox_false, sox_true, sox_true, 0, 2, 2},
      {1152, sox_false, sox_true, sox_false, 0, 3, 0},
      {4608, sox_false, sox_false, sox_false, 6, 3, 3},
      {4608, sox_false, sox_true, sox_true, 8, 3, 3},
      {4608, sox_false, sox_true, sox_false, 8, 3, 3},
      {4608, sox_false, sox_true, sox_false, 8, 4, 0},
      {4608, sox_true, sox_true, sox_false, 8, 6, 0},
      {4608, sox_true, sox_true, sox_false, 12, 6, 0},
    };
#define SET_OPTION(x) do {\
  lsx_report(#x" = %i", options[compression_level].x); \
  FLAC__stream_encoder_set_##x(p->encoder, options[compression_level].x);\
} while (0)
    SET_OPTION(blocksize);
    SET_OPTION(do_exhaustive_model_search);
    SET_OPTION(max_lpc_order);
    SET_OPTION(max_residual_partition_order);
    SET_OPTION(min_residual_partition_order);
    if (ft->signal.channels == 2) {
      SET_OPTION(do_mid_side_stereo);
      SET_OPTION(loose_mid_side_stereo);
    }
#undef SET_OPTION
  }
#endif

  if (ft->signal.length != 0) {
    FLAC__stream_encoder_set_total_samples_estimate(p->encoder, (FLAC__uint64)(ft->signal.length / ft->signal.channels));

    p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE);
    if (p->metadata[p->num_metadata] == NULL) {
      lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table template");
      return SOX_EOF;
    }
    {
#if FLAC_API_VERSION_CURRENT >= 8
      if (!FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(p->metadata[p->num_metadata], (unsigned)(10 * ft->signal.rate + .5), (FLAC__uint64)(ft->signal.length/ft->signal.channels))) {
#else
      size_t samples = 10 * ft->signal.rate;
      size_t total_samples = ft->signal.length/ft->signal.channels;
      if (!FLAC__metadata_object_seektable_template_append_spaced_points(p->metadata[p->num_metadata], total_samples / samples + (total_samples % samples != 0), (FLAC__uint64)total_samples)) {
#endif
        lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table points");
        return SOX_EOF;
      }
    }
    p->metadata[p->num_metadata]->is_last = sox_false; /* the encoder will set this for us */
    ++p->num_metadata;
  }

  if (ft->oob.comments) {     /* Make the comment structure */
    FLAC__StreamMetadata_VorbisComment_Entry entry;
    int i;

    p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
    for (i = 0; ft->oob.comments[i]; ++i) {
      static const char prepend[] = "Comment=";
      char * text = lsx_calloc(strlen(prepend) + strlen(ft->oob.comments[i]) + 1, sizeof(*text));
      /* Prepend `Comment=' if no field-name already in the comment */
      if (!strchr(ft->oob.comments[i], '='))
        strcpy(text, prepend);
      entry.entry = (FLAC__byte *) strcat(text, ft->oob.comments[i]);
      entry.length = strlen(text);
      FLAC__metadata_object_vorbiscomment_append_comment(p->metadata[p->num_metadata], entry, /*copy= */ sox_true);
      free(text);
    }
    ++p->num_metadata;
  }

  if (p->num_metadata)
    FLAC__stream_encoder_set_metadata(p->encoder, p->metadata, p->num_metadata);

#if FLAC_API_VERSION_CURRENT <= 7
  FLAC__stream_encoder_set_write_callback(p->encoder, flac_stream_encoder_write_callback);
  FLAC__stream_encoder_set_metadata_callback(p->encoder, flac_stream_encoder_metadata_callback);
  FLAC__stream_encoder_set_client_data(p->encoder, ft);
  status = FLAC__stream_encoder_init(p->encoder);
#else
  status = FLAC__stream_encoder_init_stream(p->encoder, flac_stream_encoder_write_callback,
      flac_stream_encoder_seek_callback, flac_stream_encoder_tell_callback, flac_stream_encoder_metadata_callback, ft);
#endif

  if (status != FLAC__STREAM_ENCODER_OK) {
    lsx_fail_errno(ft, SOX_EINVAL, "%s", FLAC__StreamEncoderStateString[status]);
    return SOX_EOF;
  }
  return SOX_SUCCESS;
}



static size_t write_samples(sox_format_t * const ft, sox_sample_t const * const sampleBuffer, size_t const len)
{
  priv_t * p = (priv_t *)ft->priv;
  unsigned i;

  for (i = 0; i < len; ++i) {
    long pcm = SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i], ft->clips);
    p->decoded_samples[i] = pcm >> (32 - p->bits_per_sample);
    switch (p->bits_per_sample) {
      case  8: p->decoded_samples[i] =
          SOX_SAMPLE_TO_SIGNED_8BIT(sampleBuffer[i], ft->clips);
        break;
      case 16: p->decoded_samples[i] =
          SOX_SAMPLE_TO_SIGNED_16BIT(sampleBuffer[i], ft->clips);
        break;
      case 24: p->decoded_samples[i] = /* sign extension: */
          SOX_SAMPLE_TO_SIGNED_24BIT(sampleBuffer[i],ft->clips) << 8;
        p->decoded_samples[i] >>= 8;
        break;
      case 32: p->decoded_samples[i] =
          SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i],ft->clips);
        break;
    }
  }
  FLAC__stream_encoder_process_interleaved(p->encoder, p->decoded_samples, (unsigned) len / ft->signal.channels);
  return FLAC__stream_encoder_get_state(p->encoder) == FLAC__STREAM_ENCODER_OK ? len : 0;
}
コード例 #5
0
ファイル: flac_encoder.c プロジェクト: GunioRobot/mpd
static bool
flac_encoder_open(struct encoder *_encoder, struct audio_format *audio_format,
		     GError **error)
{
	struct flac_encoder *encoder = (struct flac_encoder *)_encoder;
	unsigned bits_per_sample;

	encoder->audio_format = *audio_format;

	/* FIXME: flac should support 32bit as well */
	switch (audio_format->format) {
	case SAMPLE_FORMAT_S8:
		bits_per_sample = 8;
		break;

	case SAMPLE_FORMAT_S16:
		bits_per_sample = 16;
		break;

	case SAMPLE_FORMAT_S24_P32:
		bits_per_sample = 24;
		break;

	default:
		bits_per_sample = 24;
		audio_format->format = SAMPLE_FORMAT_S24_P32;
	}

	/* allocate the encoder */
	encoder->fse = FLAC__stream_encoder_new();
	if (encoder->fse == NULL) {
		g_set_error(error, flac_encoder_quark(), 0,
			    "flac_new() failed");
		return false;
	}

	if (!flac_encoder_setup(encoder, bits_per_sample, error)) {
		FLAC__stream_encoder_delete(encoder->fse);
		return false;
	}

	encoder->buffer_length = 0;
	pcm_buffer_init(&encoder->buffer);
	pcm_buffer_init(&encoder->expand_buffer);

	/* this immediately outputs data through callback */

#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
	{
		FLAC__StreamEncoderState init_status;

		FLAC__stream_encoder_set_write_callback(encoder->fse,
					    flac_write_callback);

		init_status = FLAC__stream_encoder_init(encoder->fse);

		if (init_status != FLAC__STREAM_ENCODER_OK) {
			g_set_error(error, flac_encoder_quark(), 0,
			    "failed to initialize encoder: %s\n",
			    FLAC__StreamEncoderStateString[init_status]);
			flac_encoder_close(_encoder);
			return false;
		}
	}
#else
	{
		FLAC__StreamEncoderInitStatus init_status;

		init_status = FLAC__stream_encoder_init_stream(encoder->fse,
			    flac_write_callback,
			    NULL, NULL, NULL, encoder);

		if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
			g_set_error(error, flac_encoder_quark(), 0,
			    "failed to initialize encoder: %s\n",
			    FLAC__StreamEncoderInitStatusString[init_status]);
			flac_encoder_close(_encoder);
			return false;
		}
	}
#endif

	return true;
}