media: dvb: Add support for external demux buffer allocation
demux input/output buffers were allocated internally by the driver,
for MPQ use-cases there's a need for user-space MPQ player to
allocate the buffers through ION driver and set them to demux
similar to the way other kinds of buffers are managed
in android multimedia stack for video
Change-Id: Ic28a279c0841fee12008cea7beac58f82409b9f9
Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>
Signed-off-by: Neha Pandey <nehap@codeaurora.org>
diff --git a/include/linux/dvb/dmx.h b/include/linux/dvb/dmx.h
index d19dfa5..257e069 100644
--- a/include/linux/dvb/dmx.h
+++ b/include/linux/dvb/dmx.h
@@ -307,6 +307,22 @@
} params;
};
+/* Filter's buffer requirement returned in dmx_caps */
+struct dmx_buffer_requirement {
+ /* Buffer size alignment, 0 means no special requirement */
+ __u32 size_alignment;
+
+ /* Maximum buffer size allowed */
+ __u32 max_size;
+ __u32 flags;
+
+/* Buffer allocated as physically contiguous memory */
+#define DMX_BUFFER_CONTIGEOUS_MEM 0x1
+
+/* If the filter's data is decrypted, the buffer should be secured one */
+#define DMX_BUFFER_SECURED_IF_DECRYPTED 0x2
+};
+
typedef struct dmx_caps {
__u32 caps;
@@ -363,6 +379,23 @@
/* Max bitrate from single memory input. Mbit/sec */
int memory_input_max_bitrate;
+
+ struct dmx_buffer_requirement section;
+
+ /* For PES not sent to decoder */
+ struct dmx_buffer_requirement pes;
+
+ /* Recording buffer for recording of 188 bytes packets */
+ struct dmx_buffer_requirement recording_188_tsp;
+
+ /* Recording buffer for recording of 192 bytes packets */
+ struct dmx_buffer_requirement recording_192_tsp;
+
+ /* DVR input buffer for playback of 188 bytes packets */
+ struct dmx_buffer_requirement playback_188_tsp;
+
+ /* DVR input buffer for playback of 192 bytes packets */
+ struct dmx_buffer_requirement playback_192_tsp;
} dmx_caps_t;
typedef enum {
@@ -410,6 +443,28 @@
__u64 stc; /* output: stc in 'base'*90 kHz units */
};
+enum dmx_buffer_mode {
+ /*
+ * demux buffers are allocated internally
+ * by the demux driver. This is the default mode.
+ * DMX_SET_BUFFER_SIZE can be used to set the size of
+ * this buffer.
+ */
+ DMX_BUFFER_MODE_INTERNAL,
+
+ /*
+ * demux buffers are allocated externally and provided
+ * to demux through DMX_SET_BUFFER.
+ * When this mode is used DMX_SET_BUFFER_SIZE and
+ * mmap are prohibited.
+ */
+ DMX_BUFFER_MODE_EXTERNAL,
+};
+
+struct dmx_buffer {
+ unsigned int size;
+ int handle;
+};
#define DMX_START _IO('o', 41)
#define DMX_STOP _IO('o', 42)
@@ -430,5 +485,7 @@
#define DMX_FEED_DATA _IO('o', 58)
#define DMX_SET_PLAYBACK_MODE _IOW('o', 59, enum dmx_playback_mode_t)
#define DMX_GET_EVENT _IOR('o', 60, struct dmx_filter_event)
+#define DMX_SET_BUFFER_MODE _IOW('o', 61, enum dmx_buffer_mode)
+#define DMX_SET_BUFFER _IOW('o', 62, struct dmx_buffer)
#endif /*_DVBDMX_H_*/