more [[gnu::...]] attributes

src/pcm/Buffer.hxx

@@ -21,7 +21,6 @@
 #define PCM_BUFFER_HXX
 
 #include "util/ReusableArray.hxx"
-#include "util/Compiler.h"
 
 #include <cstdint>
 
@@ -47,11 +46,11 @@ public:
 	 * to signal "error".  An empty destination buffer is not
 	 * always an error.
 	 */
-	gcc_malloc gcc_returns_nonnull
+	[[gnu::malloc]] [[gnu::returns_nonnull]]
 	void *Get(size_t size) noexcept;
 
 	template<typename T>
-	gcc_malloc gcc_returns_nonnull
+	[[gnu::malloc]] [[gnu::returns_nonnull]]
 	T *GetT(size_t n) noexcept {
 		return (T *)Get(n * sizeof(T));
 	}

src/pcm/ChannelsConverter.hxx

@@ -73,7 +73,7 @@ public:
 	 * @param src the input buffer
 	 * @return the destination buffer
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	ConstBuffer<void> Convert(ConstBuffer<void> src) noexcept;
 };
 

src/pcm/Export.hxx

@@ -159,13 +159,13 @@ public:
 		 * DSD_U32, four input bytes (= 4 * 8 bits) are combined to
 		 * one output word (32 bits), dividing the sample rate by 4.
 		 */
-		gcc_pure
+		[[gnu::pure]]
 		unsigned CalcOutputSampleRate(unsigned input_sample_rate) const noexcept;
 
 		/**
 		 * The inverse of CalcOutputSampleRate().
 		 */
-		gcc_pure
+		[[gnu::pure]]
 		unsigned CalcInputSampleRate(unsigned output_sample_rate) const noexcept;
 	};
 
@@ -198,7 +198,7 @@ public:
 	/**
 	 * Calculate the size of one input frame.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	size_t GetInputFrameSize() const noexcept {
 		return channels * sample_format_size(src_sample_format);
 	}
@@ -206,19 +206,19 @@ public:
 	/**
 	 * Calculate the size of one output frame.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	size_t GetOutputFrameSize() const noexcept;
 
 	/**
 	 * @return the size of one input block in bytes
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	size_t GetInputBlockSize() const noexcept;
 
 	/**
 	 * @return the size of one output block in bytes
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	size_t GetOutputBlockSize() const noexcept;
 
 	/**
@@ -243,7 +243,7 @@ public:
 	 * destination buffer to the according number of bytes from the
 	 * pcm_export() source buffer.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	size_t CalcInputSize(size_t dest_size) const noexcept;
 };
 

src/pcm/FormatConverter.hxx

@@ -72,7 +72,7 @@ public:
 	 * @param src the input buffer
 	 * @return the destination buffer
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	ConstBuffer<void> Convert(ConstBuffer<void> src) noexcept;
 };
 

src/pcm/PcmFormat.hxx

@@ -37,7 +37,7 @@ class PcmDither;
  * @param src the source PCM buffer
  * @return the destination buffer
  */
-gcc_pure
+[[gnu::pure]]
 ConstBuffer<int16_t>
 pcm_convert_to_16(PcmBuffer &buffer, PcmDither &dither,
 		  SampleFormat src_format, ConstBuffer<void> src) noexcept;
@@ -49,7 +49,7 @@ pcm_convert_to_16(PcmBuffer &buffer, PcmDither &dither,
  * @param src the source PCM buffer
  * @return the destination buffer
  */
-gcc_pure
+[[gnu::pure]]
 ConstBuffer<int32_t>
 pcm_convert_to_24(PcmBuffer &buffer,
 		  SampleFormat src_format, ConstBuffer<void> src) noexcept;
@@ -61,7 +61,7 @@ pcm_convert_to_24(PcmBuffer &buffer,
  * @param src the source PCM buffer
  * @return the destination buffer
  */
-gcc_pure
+[[gnu::pure]]
 ConstBuffer<int32_t>
 pcm_convert_to_32(PcmBuffer &buffer,
 		  SampleFormat src_format, ConstBuffer<void> src) noexcept;
@@ -73,7 +73,7 @@ pcm_convert_to_32(PcmBuffer &buffer,
  * @param src the source PCM buffer
  * @return the destination buffer
  */
-gcc_pure
+[[gnu::pure]]
 ConstBuffer<float>
 pcm_convert_to_float(PcmBuffer &buffer,
 		     SampleFormat src_format, ConstBuffer<void> src) noexcept;

src/pcm/Volume.hxx

@@ -120,7 +120,7 @@ public:
 	/**
 	 * Apply the volume level.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	ConstBuffer<void> Apply(ConstBuffer<void> src) noexcept;
 };