util/DynamicFifoBuffer: new class replacing growing_fifo

src/encoder/FlacEncoderPlugin.cxx

@@ -23,15 +23,10 @@
 #include "AudioFormat.hxx"
 #include "pcm/PcmBuffer.hxx"
 #include "ConfigError.hxx"
+#include "util/Manual.hxx"
+#include "util/DynamicFifoBuffer.hxx"
 #include "util/Error.hxx"
 #include "util/Domain.hxx"
-#include "util/fifo_buffer.h"
-
-extern "C" {
-#include "util/growing_fifo.h"
-}
-
-#include <string.h>
 
 #include <FLAC/stream_encoder.h>
 
@@ -53,7 +48,7 @@ struct flac_encoder {
 	 * This buffer will hold encoded data from libFLAC until it is
 	 * picked up with flac_encoder_read().
 	 */
-	struct fifo_buffer *output_buffer;
+	Manual<DynamicFifoBuffer<uint8_t>> output_buffer;
 
 	flac_encoder():encoder(flac_encoder_plugin) {}
 };
@@ -140,7 +135,7 @@ flac_write_callback(gcc_unused const FLAC__StreamEncoder *fse,
 	struct flac_encoder *encoder = (struct flac_encoder *) client_data;
 
 	//transfer data to buffer
-	growing_fifo_append(&encoder->output_buffer, data, bytes);
+	encoder->output_buffer->Append((const uint8_t *)data, bytes);
 
 	return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
 }
@@ -153,7 +148,7 @@ flac_encoder_close(Encoder *_encoder)
 	FLAC__stream_encoder_delete(encoder->fse);
 
 	encoder->expand_buffer.Clear();
-	fifo_buffer_free(encoder->output_buffer);
+	encoder->output_buffer.Destruct();
 }
 
 static bool
@@ -195,7 +190,7 @@ flac_encoder_open(Encoder *_encoder, AudioFormat &audio_format, Error &error)
 		return false;
 	}
 
-	encoder->output_buffer = growing_fifo_new();
+	encoder->output_buffer.Construct(8192);
 
 	/* this immediately outputs data through callback */
 
@@ -304,18 +299,7 @@ flac_encoder_read(Encoder *_encoder, void *dest, size_t length)
 {
 	struct flac_encoder *encoder = (struct flac_encoder *)_encoder;
 
-	size_t max_length;
-	const char *src = (const char *)
-		fifo_buffer_read(encoder->output_buffer, &max_length);
-	if (src == nullptr)
-		return 0;
-
-	if (length > max_length)
-		length = max_length;
-
-	memcpy(dest, src, length);
-	fifo_buffer_consume(encoder->output_buffer, length);
-	return length;
+	return encoder->output_buffer->Read((uint8_t *)dest, length);
 }
 
 static const char *

src/encoder/NullEncoderPlugin.cxx

@@ -20,21 +20,19 @@
 #include "config.h"
 #include "NullEncoderPlugin.hxx"
 #include "EncoderAPI.hxx"
-#include "util/fifo_buffer.h"
-extern "C" {
-#include "util/growing_fifo.h"
-}
+#include "util/Manual.hxx"
+#include "util/DynamicFifoBuffer.hxx"
 #include "Compiler.h"
 
 #include <assert.h>
-#include <string.h>
 
 struct NullEncoder final {
 	Encoder encoder;
 
-	struct fifo_buffer *buffer;
+	Manual<DynamicFifoBuffer<uint8_t>> buffer;
 
-	NullEncoder():encoder(null_encoder_plugin) {}
+	NullEncoder()
+		:encoder(null_encoder_plugin) {}
 };
 
 static Encoder *
@@ -58,7 +56,7 @@ null_encoder_close(Encoder *_encoder)
 {
 	NullEncoder *encoder = (NullEncoder *)_encoder;
 
-	fifo_buffer_free(encoder->buffer);
+	encoder->buffer.Destruct();
 }
 
 
@@ -68,7 +66,7 @@ null_encoder_open(Encoder *_encoder,
 		  gcc_unused Error &error)
 {
 	NullEncoder *encoder = (NullEncoder *)_encoder;
-	encoder->buffer = growing_fifo_new();
+	encoder->buffer.Construct(8192);
 	return true;
 }
 
@@ -79,7 +77,7 @@ null_encoder_write(Encoder *_encoder,
 {
 	NullEncoder *encoder = (NullEncoder *)_encoder;
 
-	growing_fifo_append(&encoder->buffer, data, length);
+	encoder->buffer->Append((const uint8_t *)data, length);
 	return length;
 }
 
@@ -88,17 +86,7 @@ null_encoder_read(Encoder *_encoder, void *dest, size_t length)
 {
 	NullEncoder *encoder = (NullEncoder *)_encoder;
 
-	size_t max_length;
-	const void *src = fifo_buffer_read(encoder->buffer, &max_length);
-	if (src == nullptr)
-		return 0;
-
-	if (length > max_length)
-		length = max_length;
-
-	memcpy(dest, src, length);
-	fifo_buffer_consume(encoder->buffer, length);
-	return length;
+	return encoder->buffer->Read((uint8_t *)dest, length);
 }
 
 const EncoderPlugin null_encoder_plugin = {

src/encoder/WaveEncoderPlugin.cxx

@@ -21,10 +21,8 @@
 #include "WaveEncoderPlugin.hxx"
 #include "EncoderAPI.hxx"
 #include "system/ByteOrder.hxx"
-#include "util/fifo_buffer.h"
-extern "C" {
-#include "util/growing_fifo.h"
-}
+#include "util/Manual.hxx"
+#include "util/DynamicFifoBuffer.hxx"
 
 #include <assert.h>
 #include <string.h>
@@ -33,7 +31,7 @@ struct WaveEncoder {
 	Encoder encoder;
 	unsigned bits;
 
-	struct fifo_buffer *buffer;
+	Manual<DynamicFifoBuffer<uint8_t>> buffer;
 
 	WaveEncoder():encoder(wave_encoder_plugin) {}
 };
@@ -128,9 +126,11 @@ wave_encoder_open(Encoder *_encoder,
 		break;
 	}
 
-	encoder->buffer = growing_fifo_new();
-	wave_header *header = (wave_header *)
-		growing_fifo_write(&encoder->buffer, sizeof(*header));
+	encoder->buffer.Construct(8192);
+
+	auto range = encoder->buffer->Write();
+	assert(range.size >= sizeof(wave_header));
+	wave_header *header = (wave_header *)range.data;
 
 	/* create PCM wave header in initial buffer */
 	fill_wave_header(header,
@@ -138,7 +138,8 @@ wave_encoder_open(Encoder *_encoder,
 			 encoder->bits,
 			 audio_format.sample_rate,
 			 (encoder->bits / 8) * audio_format.channels);
-	fifo_buffer_append(encoder->buffer, sizeof(*header));
+
+	encoder->buffer->Append(sizeof(*header));
 
 	return true;
 }
@@ -148,7 +149,7 @@ wave_encoder_close(Encoder *_encoder)
 {
 	WaveEncoder *encoder = (WaveEncoder *)_encoder;
 
-	fifo_buffer_free(encoder->buffer);
+	encoder->buffer.Destruct();
 }
 
 static size_t
@@ -198,7 +199,7 @@ wave_encoder_write(Encoder *_encoder,
 {
 	WaveEncoder *encoder = (WaveEncoder *)_encoder;
 
-	uint8_t *dst = (uint8_t *)growing_fifo_write(&encoder->buffer, length);
+	uint8_t *dst = encoder->buffer->Write(length);
 
 	if (IsLittleEndian()) {
 		switch (encoder->bits) {
@@ -230,7 +231,7 @@ wave_encoder_write(Encoder *_encoder,
 		}
 	}
 
-	fifo_buffer_append(encoder->buffer, length);
+	encoder->buffer->Append(length);
 	return true;
 }
 
@@ -239,17 +240,7 @@ wave_encoder_read(Encoder *_encoder, void *dest, size_t length)
 {
 	WaveEncoder *encoder = (WaveEncoder *)_encoder;
 
-	size_t max_length;
-	const void *src = fifo_buffer_read(encoder->buffer, &max_length);
-	if (src == NULL)
-		return 0;
-
-	if (length > max_length)
-		length = max_length;
-
-	memcpy(dest, src, length);
-	fifo_buffer_consume(encoder->buffer, length);
-	return length;
+	return encoder->buffer->Read((uint8_t *)dest, length);
 }
 
 static const char *