[pulseaudio-discuss] [RFC PATCH 2/2] alsa: add support for Dolby TrueHD and DTS-HD HBR passthrough

[Pierre-Louis Bossart]

Add definitions and fixups for channel count

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 src/pulse/format.c          | 2 ++
 src/pulse/format.h          | 8 ++++++++
 src/pulsecore/core-format.c | 6 +++++-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/pulse/format.c b/src/pulse/format.c
index 8474978..07b4420 100644
--- a/src/pulse/format.c
+++ b/src/pulse/format.c
@@ -47,6 +47,8 @@ static const char* const _encoding_str_table[]= {
     [PA_ENCODING_MPEG_IEC61937] = "mpeg-iec61937",
     [PA_ENCODING_DTS_IEC61937] = "dts-iec61937",
     [PA_ENCODING_MPEG2_AAC_IEC61937] = "mpeg2-aac-iec61937",
+    [PA_ENCODING_TRUEHD_IEC61937] = "truehd-iec61937",
+    [PA_ENCODING_DTSHD_IEC61937] = "dtshd-iec61937",
     [PA_ENCODING_ANY] = "any",
 };
 
diff --git a/src/pulse/format.h b/src/pulse/format.h
index f606b3b..6122abe 100644
--- a/src/pulse/format.h
+++ b/src/pulse/format.h
@@ -56,6 +56,12 @@ typedef enum pa_encoding {
     PA_ENCODING_MPEG2_AAC_IEC61937,
     /**< MPEG-2 AAC data encapsulated in IEC 61937 header/padding. \since 4.0 */
 
+    PA_ENCODING_TRUEHD_IEC61937,
+    /**< Dolby TrueHd data encapsulated in IEC 61937 header/padding. \since 11.0 */
+
+    PA_ENCODING_DTSHD_IEC61937,
+    /**< DTS HD-MasterAudio encapsulated in IEC 61937 header/padding. \since 11.0 */
+
     PA_ENCODING_MAX,
     /**< Valid encoding types must be less than this value */
 
@@ -71,6 +77,8 @@ typedef enum pa_encoding {
 #define PA_ENCODING_MPEG_IEC61937 PA_ENCODING_MPEG_IEC61937
 #define PA_ENCODING_DTS_IEC61937 PA_ENCODING_DTS_IEC61937
 #define PA_ENCODING_MPEG2_AAC_IEC61937 PA_ENCODING_MPEG2_AAC_IEC61937
+#define PA_ENCODING_DOLBY_TRUEHD_IEC61937 PA_ENCODING_DOLBY_TRUEHD_IEC61937
+#define PA_ENCODING_DTS_MA_IEC61937 PA_ENCODING_DTS_MA_IEC61937
 #define PA_ENCODING_MAX PA_ENCODING_MAX
 #define PA_ENCODING_INVALID PA_ENCODING_INVALID
 /** \endcond */
diff --git a/src/pulsecore/core-format.c b/src/pulsecore/core-format.c
index 9d3c8d6..c3db267 100644
--- a/src/pulsecore/core-format.c
+++ b/src/pulsecore/core-format.c
@@ -226,7 +226,11 @@ int pa_format_info_to_sample_spec_fake(const pa_format_info *f, pa_sample_spec *
      * formats, this function should return a non-zero values for these. */
 
     ss->format = PA_SAMPLE_S16LE;
-    ss->channels = 2;
+    if ((f->encoding == PA_ENCODING_TRUEHD_IEC61937) ||
+	(f->encoding == PA_ENCODING_DTSHD_IEC61937))
+	ss->channels = 8;
+    else
+	ss->channels = 2;
 
     if (map)
         pa_channel_map_init_stereo(map);
-- 
2.9.3