V4L/DVB (5307): Add support for the cx23415 MPEG decoding features.

The cx23415 adds some extra features that this DVB decoding API did
not support. This API has been expanded to support the required
features. Both source and binary backwards compatibility is kept
intact by these changes. So existing applications are not affected.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/include/linux/dvb/video.h b/include/linux/dvb/video.h
index faebfda397ff..a96da40c50f5 100644
--- a/include/linux/dvb/video.h
+++ b/include/linux/dvb/video.h
@@ -80,10 +80,53 @@ typedef enum {
 } video_play_state_t;
 
 
+/* Decoder commands */
+#define VIDEO_CMD_PLAY        (0)
+#define VIDEO_CMD_STOP        (1)
+#define VIDEO_CMD_FREEZE      (2)
+#define VIDEO_CMD_CONTINUE    (3)
+
+/* Flags for VIDEO_CMD_FREEZE */
+#define VIDEO_CMD_FREEZE_TO_BLACK       (1 << 0)
+
+/* Flags for VIDEO_CMD_STOP */
+#define VIDEO_CMD_STOP_TO_BLACK         (1 << 0)
+#define VIDEO_CMD_STOP_IMMEDIATELY      (1 << 1)
+
+/* Play input formats: */
+/* The decoder has no special format requirements */
+#define VIDEO_PLAY_FMT_NONE         (0)
+/* The decoder requires full GOPs */
+#define VIDEO_PLAY_FMT_GOP          (1)
+
+/* The structure must be zeroed before use by the application
+   This ensures it can be extended safely in the future. */
+struct video_command {
+        __u32 cmd;
+        __u32 flags;
+        union {
+                struct {
+                        __u64 pts;
+                } stop;
+
+                struct {
+                        __u32 speed;
+                        __u32 format;
+                } play;
+
+                struct {
+                        __u32 data[16];
+                } raw;
+        };
+};
+
+
 struct video_event {
         int32_t type;
 #define VIDEO_EVENT_SIZE_CHANGED        1
 #define VIDEO_EVENT_FRAME_RATE_CHANGED  2
+#define VIDEO_EVENT_DECODER_STOPPED     3
+#define VIDEO_EVENT_VSYNC               4
         time_t timestamp;
         union {
                 video_size_t size;
@@ -213,4 +256,10 @@ typedef uint16_t video_attributes_t;
  */
 #define VIDEO_GET_PTS              _IOR('o', 57, __u64)
 
+/* Read the number of displayed frames since the decoder was started */
+#define VIDEO_GET_FRAME_COUNT      _IOR('o', 58, __u64)
+
+#define VIDEO_COMMAND              _IOWR('o', 59, struct video_command)
+#define VIDEO_TRY_COMMAND          _IOWR('o', 60, struct video_command)
+
 #endif /*_DVBVIDEO_H_*/