};
struct vbi_info {
- /* VBI general fixed card data */
+ /* VBI general data, does not change during streaming */
+
u32 raw_decoder_line_size; /* raw VBI line size from digitizer */
u8 raw_decoder_sav_odd_field; /* raw VBI Start Active Video digitizer code of odd field */
u8 raw_decoder_sav_even_field; /* raw VBI Start Active Video digitizer code of even field */
u8 sliced_decoder_sav_odd_field; /* sliced VBI Start Active Video digitizer code of odd field */
u8 sliced_decoder_sav_even_field; /* sliced VBI Start Active Video digitizer code of even field */
- u32 dec_start;
- u32 enc_start, enc_size;
- int fpi;
- u32 frame;
- struct vbi_cc cc_payload[256]; /* Sliced VBI CC payload array. It is an array to
+ u32 start[2]; /* start of first VBI line in the odd/even fields */
+ u32 count; /* number of VBI lines per field */
+ u32 raw_size; /* size of raw VBI line from the digitizer */
+ u32 sliced_size; /* size of sliced VBI line from the digitizer */
+
+ u32 dec_start; /* start in decoder memory of VBI re-insertion buffers */
+ u32 enc_start; /* start in encoder memory of VBI capture buffers */
+ u32 enc_size; /* size of VBI capture area */
+ int fpi; /* number of VBI frames per interrupt */
+
+ struct v4l2_format in; /* current VBI capture format */
+ struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */
+ int insert_mpeg; /* if non-zero, then embed VBI data in MPEG stream */
+
+ /* Raw VBI compatibility hack */
+
+ u32 frame; /* frame counter hack needed for backwards compatibility
+ of old VBI software */
+
+ /* Sliced VBI output data */
+
+ struct vbi_cc cc_payload[256]; /* sliced VBI CC payload array: it is an array to
prevent dropping CC data if they couldn't be
- processed fast enough. */
- int cc_payload_idx; /* Index in cc_payload */
- u8 cc_missing_cnt; /* Counts number of frames without CC for passthrough mode */
- int wss_payload; /* Sliced VBI WSS payload */
- u8 wss_missing_cnt; /* Counts number of frames without WSS for passthrough mode */
- struct vbi_vps vps_payload; /* Sliced VBI VPS payload */
- struct v4l2_format in;
- /* convenience pointer to sliced struct in vbi_in union */
- struct v4l2_sliced_vbi_format *sliced_in;
- int insert_mpeg;
-
- /* Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
- One for /dev/vbi0 and one for /dev/vbi8 */
- struct v4l2_sliced_vbi_data sliced_data[36];
- struct v4l2_sliced_vbi_data sliced_dec_data[36];
+ processed fast enough */
+ int cc_payload_idx; /* index in cc_payload */
+ u8 cc_missing_cnt; /* counts number of frames without CC for passthrough mode */
+ int wss_payload; /* sliced VBI WSS payload */
+ u8 wss_missing_cnt; /* counts number of frames without WSS for passthrough mode */
+ struct vbi_vps vps_payload; /* sliced VBI VPS payload */
+
+ /* Sliced VBI capture data */
+
+ struct v4l2_sliced_vbi_data sliced_data[36]; /* sliced VBI storage for VBI encoder stream */
+ struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */
+
+ /* VBI Embedding data */
/* Buffer for VBI data inserted into MPEG stream.
The first byte is a dummy byte that's never used.
This pointer array will allocate 2049 bytes to store each VBI frame. */
u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
- struct ivtv_buffer sliced_mpeg_buf;
- u32 inserted_frame;
-
- u32 start[2], count;
- u32 raw_size;
- u32 sliced_size;
+ struct ivtv_buffer sliced_mpeg_buf; /* temporary buffer holding data from sliced_mpeg_data */
+ u32 inserted_frame; /* index in sliced_mpeg_size of next sliced data
+ to be inserted in the MPEG stream */
};
/* forward declaration of struct defined in ivtv-cards.h */
projects / linux-2.6 / commitdiff