media: dvb: update buffer mmaped flags and frame counter

Now that we have support for a buffer counter and for
error flags, update them at DMX_DQBUF.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

include/media/demux.h

@@ -117,7 +117,7 @@ struct dmx_ts_feed {
  *		  specified by @filter_value that will be used on the filter
  *		  match logic.
  * @filter_mode:  Contains a 16 bytes (128 bits) filter mode.
- * @parent:	  Pointer to struct dmx_section_feed.
+ * @parent:	  Back-pointer to struct dmx_section_feed.
  * @priv:	  Pointer to private data of the API client.
  *
  *
@@ -130,8 +130,9 @@ struct dmx_section_filter {
 	u8 filter_value[DMX_MAX_FILTER_SIZE];
 	u8 filter_mask[DMX_MAX_FILTER_SIZE];
 	u8 filter_mode[DMX_MAX_FILTER_SIZE];
-	struct dmx_section_feed *parent; /* Back-pointer */
-	void *priv; /* Pointer to private data of the API client */
+	struct dmx_section_feed *parent;
+
+	void *priv;
 };
 
 /**
@@ -193,6 +194,10 @@ struct dmx_section_feed {
  * @buffer2:		Pointer to the tail of the filtered TS packets, or NULL.
  * @buffer2_length:	Length of the TS data in buffer2.
  * @source:		Indicates which TS feed is the source of the callback.
+ * @buffer_flags:	Address where buffer flags are stored. Those are
+ *			used to report discontinuity users via DVB
+ *			memory mapped API, as defined by
+ *			&enum dmx_buffer_flags.
  *
  * This function callback prototype, provided by the client of the demux API,
  * is called from the demux code. The function is only called when filtering
@@ -245,7 +250,8 @@ typedef int (*dmx_ts_cb)(const u8 *buffer1,
 			 size_t buffer1_length,
 			 const u8 *buffer2,
 			 size_t buffer2_length,
-			 struct dmx_ts_feed *source);
+			 struct dmx_ts_feed *source,
+			 u32 *buffer_flags);
 
 /**
  * typedef dmx_section_cb - DVB demux TS filter callback function prototype
@@ -261,6 +267,10 @@ typedef int (*dmx_ts_cb)(const u8 *buffer1,
  *			including headers and CRC.
  * @source:		Indicates which section feed is the source of the
  *			callback.
+ * @buffer_flags:	Address where buffer flags are stored. Those are
+ *			used to report discontinuity users via DVB
+ *			memory mapped API, as defined by
+ *			&enum dmx_buffer_flags.
  *
  * This function callback prototype, provided by the client of the demux API,
  * is called from the demux code. The function is only called when
@@ -286,7 +296,8 @@ typedef int (*dmx_section_cb)(const u8 *buffer1,
 			      size_t buffer1_len,
 			      const u8 *buffer2,
 			      size_t buffer2_len,
-			      struct dmx_section_filter *source);
+			      struct dmx_section_filter *source,
+			      u32 *buffer_flags);
 
 /*
  * DVB Front-End

include/media/dvb_demux.h

@@ -115,6 +115,8 @@ struct dvb_demux_filter {
  * @pid:	PID to be filtered.
  * @timeout:	feed timeout.
  * @filter:	pointer to &struct dvb_demux_filter.
+ * @buffer_flags: Buffer flags used to report discontinuity users via DVB
+ *		  memory mapped API, as defined by &enum dmx_buffer_flags.
  * @ts_type:	type of TS, as defined by &enum ts_filter_type.
  * @pes_type:	type of PES, as defined by &enum dmx_ts_pes.
  * @cc:		MPEG-TS packet continuity counter
@@ -145,6 +147,8 @@ struct dvb_demux_feed {
 	ktime_t timeout;
 	struct dvb_demux_filter *filter;
 
+	u32 buffer_flags;
+
 	enum ts_filter_type ts_type;
 	enum dmx_ts_pes pes_type;
 

include/media/dvb_vb2.h

@@ -85,6 +85,12 @@ struct dvb_buffer {
  * @nonblocking:
  *		If different than zero, device is operating on non-blocking
  *		mode.
+ * @flags:	buffer flags as defined by &enum dmx_buffer_flags.
+ *		Filled only at &DMX_DQBUF. &DMX_QBUF should zero this field.
+ * @count:	monotonic counter for filled buffers. Helps to identify
+ *		data stream loses. Filled only at &DMX_DQBUF. &DMX_QBUF should
+ *		zero this field.
+ *
  * @name:	name of the device type. Currently, it can either be
  *		"dvr" or "demux_filter".
  */
@@ -100,6 +106,10 @@ struct dvb_vb2_ctx {
 	int	buf_siz;
 	int	buf_cnt;
 	int	nonblocking;
+
+	enum dmx_buffer_flags flags;
+	u32	count;
+
 	char	name[DVB_VB2_NAME_MAX + 1];
 };
 
@@ -114,7 +124,7 @@ static inline int dvb_vb2_release(struct dvb_vb2_ctx *ctx)
 	return 0;
 };
 #define dvb_vb2_is_streaming(ctx) (0)
-#define dvb_vb2_fill_buffer(ctx, file, wait) (0)
+#define dvb_vb2_fill_buffer(ctx, file, wait, flags) (0)
 
 static inline __poll_t dvb_vb2_poll(struct dvb_vb2_ctx *ctx,
 				    struct file *file,
@@ -153,9 +163,13 @@ int dvb_vb2_is_streaming(struct dvb_vb2_ctx *ctx);
  * @ctx:	control struct for VB2 handler
  * @src:	place where the data is stored
  * @len:	number of bytes to be copied from @src
+ * @buffer_flags:
+ *		pointer to buffer flags as defined by &enum dmx_buffer_flags.
+ *		can be NULL.
  */
 int dvb_vb2_fill_buffer(struct dvb_vb2_ctx *ctx,
-			const unsigned char *src, int len);
+			const unsigned char *src, int len,
+			enum dmx_buffer_flags *buffer_flags);
 
 /**
  * dvb_vb2_poll - Wrapper to vb2_core_streamon() for Digital TV