pcm_export: add option "pack"

Converts padded 24 bit samples to packed 24 bit samples.  Will replace
the packed S24 sample format, which is not used internally.

1 files changed, 13 insertions, 1 deletions

diff --git a/src/pcm_export.h b/src/pcm_export.h
index 570092eb..7dc9f5f0 100644
--- a/src/pcm_export.h
+++ b/src/pcm_export.h
@@ -35,6 +35,13 @@ struct audio_format;
  */
 struct pcm_export_state {
 	/**
+	 * The buffer used to pack samples, removing padding.
+	 *
+	 * @see #reverse_endian
+	 */
+	struct pcm_buffer pack_buffer;
+
+	/**
 	 * The buffer used to reverse the byte order.
 	 *
 	 * @see #reverse_endian
@@ -42,6 +49,11 @@ struct pcm_export_state {
 	struct pcm_buffer reverse_buffer;
 
 	/**
+	 * Pack 24 bit samples?
+	 */
+	bool pack24;
+
+	/**
 	 * Export the samples in reverse byte order?  A non-zero value
 	 * means the option is enabled and represents the size of each
 	 * sample (2 or bigger).
@@ -72,7 +84,7 @@ pcm_export_deinit(struct pcm_export_state *state);
 void
 pcm_export_open(struct pcm_export_state *state,
 		enum sample_format sample_format,
-		bool reverse_endian);
+		bool pack, bool reverse_endian);
 
 /**
  * Export a PCM buffer.