implementation finished

src/libOggFLAC/include/private/ogg_encoder_aspect.h

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+/* libOggFLAC - Free Lossless Audio Codec + Ogg library
+ * Copyright (C) 2002,2003  Josh Coalson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef OggFLAC__PRIVATE__OGG_ENCODER_ASPECT_H
+#define OggFLAC__PRIVATE__OGG_ENCODER_ASPECT_H
+
+#include <ogg/ogg.h>
+
+#include "FLAC/ordinals.h"
+#include "FLAC/stream_encoder.h" /* for FLAC__StreamEncoderWriteStatus */
+
+typedef struct OggFLAC__OggEncoderAspect {
+	/* these are storage for values that can be set through the API */
+	long serial_number;
+
+	/* these are for internal state related to Ogg encoding */
+	ogg_stream_state stream_state;
+	ogg_page page;
+	FLAC__bool is_first_packet;
+	FLAC__uint64 samples_written;
+} OggFLAC__OggEncoderAspect;
+
+void OggFLAC__ogg_encoder_aspect_set_serial_number(OggFLAC__OggEncoderAspect *aspect, long value);
+void OggFLAC__ogg_encoder_aspect_set_defaults(OggFLAC__OggEncoderAspect *aspect);
+FLAC__bool OggFLAC__ogg_encoder_aspect_init(OggFLAC__OggEncoderAspect *aspect);
+void OggFLAC__ogg_encoder_aspect_finish(OggFLAC__OggEncoderAspect *aspect);
+
+typedef FLAC__StreamEncoderWriteStatus (*OggFLAC__OggEncoderAspectWriteCallbackProxy)(const void *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
+
+FLAC__StreamEncoderWriteStatus OggFLAC__ogg_encoder_aspect_write_callback_wrapper(OggFLAC__OggEncoderAspect *aspect, const FLAC__uint64 total_samples_estimate, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, OggFLAC__OggEncoderAspectWriteCallbackProxy write_callback, void *encoder, void *client_data);
+#endif

src/libOggFLAC/ogg_encoder_aspect.c

@@ -0,0 +1,106 @@
+/* libOggFLAC - Free Lossless Audio Codec + Ogg library
+ * Copyright (C) 2002,2003  Josh Coalson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h> /* for memset() */
+#include "FLAC/assert.h"
+#include "private/ogg_encoder_aspect.h"
+
+/***********************************************************************
+ *
+ * Public class methods
+ *
+ ***********************************************************************/
+
+FLAC__bool OggFLAC__ogg_encoder_aspect_init(OggFLAC__OggEncoderAspect *aspect)
+{
+	/* we will determine the serial number later if necessary */
+	if(ogg_stream_init(&aspect->stream_state, aspect->serial_number) != 0)
+		return false;
+
+	aspect->is_first_packet = true;
+	aspect->samples_written = 0;
+
+	return true;
+}
+
+void OggFLAC__ogg_encoder_aspect_finish(OggFLAC__OggEncoderAspect *aspect)
+{
+	(void)ogg_stream_clear(&aspect->stream_state);
+	/*@@@ what aobut the page? */
+}
+
+void OggFLAC__ogg_encoder_aspect_set_serial_number(OggFLAC__OggEncoderAspect *aspect, long value)
+{
+	aspect->serial_number = value;
+}
+
+void OggFLAC__ogg_encoder_aspect_set_defaults(OggFLAC__OggEncoderAspect *aspect)
+{
+	aspect->serial_number = 0;
+}
+
+FLAC__StreamEncoderWriteStatus OggFLAC__ogg_encoder_aspect_write_callback_wrapper(OggFLAC__OggEncoderAspect *aspect, const FLAC__uint64 total_samples_estimate, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, OggFLAC__OggEncoderAspectWriteCallbackProxy write_callback, void *encoder, void *client_data)
+{
+	ogg_packet packet;
+
+	aspect->samples_written += samples;
+
+	memset(&packet, 0, sizeof(packet));
+	packet.packet = (unsigned char *)buffer;
+	packet.granulepos = aspect->samples_written;
+	/* WATCHOUT:
+	 * This depends on the behavior of FLAC__StreamEncoder that 'samples'
+	 * will be 0 for metadata writes.
+	 */
+	packet.packetno = (samples == 0? -1 : (int)current_frame);
+	packet.bytes = bytes;
+
+	if(aspect->is_first_packet) {
+		packet.b_o_s = 1;
+		aspect->is_first_packet = false;
+	}
+
+	if(total_samples_estimate > 0 && total_samples_estimate == aspect->samples_written)
+		packet.e_o_s = 1;
+
+	if(ogg_stream_packetin(&aspect->stream_state, &packet) != 0)
+		return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
+
+	while(ogg_stream_pageout(&aspect->stream_state, &aspect->page) != 0) {
+		if(write_callback(encoder, aspect->page.header, aspect->page.header_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK)
+			return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
+
+		if(write_callback(encoder, aspect->page.body, aspect->page.body_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK)
+			return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
+	}
+
+	return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+}