fix(avutil): 修正 avpcmbuffer.h 头文件

Author: zhaohappy

src/avutil/include/audiosample.h

@@ -183,4 +183,44 @@ typedef struct AVChannelLayout {
   void *opaque;
 } AVChannelLayout;
 
+/**
+ * Audio sample formats
+ *
+ * - The data described by the sample format is always in native-endian order.
+ *   Sample values can be expressed by native C types, hence the lack of a signed
+ *   24-bit sample format even though it is a common raw audio data format.
+ *
+ * - The floating-point formats are based on full volume being in the range
+ *   [-1.0, 1.0]. Any values outside this range are beyond full volume level.
+ *
+ * - The data layout as used in av_samples_fill_arrays() and elsewhere in FFmpeg
+ *   (such as AVFrame in libavcodec) is as follows:
+ *
+ * @par
+ * For planar sample formats, each audio channel is in a separate data plane,
+ * and linesize is the buffer size, in bytes, for a single plane. All data
+ * planes must be the same size. For packed sample formats, only the first data
+ * plane is used, and samples for each channel are interleaved. In this case,
+ * linesize is the buffer size, in bytes, for the 1 plane.
+ *
+ */
+enum AVSampleFormat {
+  AV_SAMPLE_FMT_NONE = -1,
+  AV_SAMPLE_FMT_U8,          ///< unsigned 8 bits
+  AV_SAMPLE_FMT_S16,         ///< signed 16 bits
+  AV_SAMPLE_FMT_S32,         ///< signed 32 bits
+  AV_SAMPLE_FMT_FLT,         ///< float
+  AV_SAMPLE_FMT_DBL,         ///< double
+
+  AV_SAMPLE_FMT_U8P,         ///< unsigned 8 bits, planar
+  AV_SAMPLE_FMT_S16P,        ///< signed 16 bits, planar
+  AV_SAMPLE_FMT_S32P,        ///< signed 32 bits, planar
+  AV_SAMPLE_FMT_FLTP,        ///< float, planar
+  AV_SAMPLE_FMT_DBLP,        ///< double, planar
+  AV_SAMPLE_FMT_S64,         ///< signed 64 bits
+  AV_SAMPLE_FMT_S64P,        ///< signed 64 bits, planar
+
+  AV_SAMPLE_FMT_NB           ///< Number of sample formats. DO NOT USE if linking dynamically
+};
+
 #endif

src/avutil/include/avpcmbuffer.h

@@ -4,6 +4,7 @@
 
 #include <stdint.h>
 #include "wasmatomic.h"
+#include "audiosample.h"
 
 typedef struct AVPCMBuffer {
    /**
@@ -31,6 +32,10 @@ typedef struct AVPCMBuffer {
    * 采样率
    */
   int32_t sampleRate;
+  /**
+   * pcm 格式
+   */
+  enum AVSampleFormat format;
   /**
    * pts
    */