struct cx18_options { int megabytes[CX18_MAX_STREAMS]; /* Size in megabytes of each stream */ int cardtype; /* force card type on load */ int tuner; /* set tuner on load */ int radio; /* enable/disable radio */
};
/* per-mdl bit flags */ #define CX18_F_M_NEED_SWAP 0 /* mdl buffer data must be endianness swapped */
/* per-stream, s_flags */ #define CX18_F_S_CLAIMED 3 /* this stream is claimed */ #define CX18_F_S_STREAMING 4 /* the fw is decoding/encoding this stream */ #define CX18_F_S_INTERNAL_USE 5 /* this stream is used internally (sliced VBI processing) */ #define CX18_F_S_STREAMOFF 7 /* signal end of stream EOS */ #define CX18_F_S_APPL_IO 8 /* this stream is used read/written by an application */ #define CX18_F_S_STOPPING 9 /* telling the fw to stop capturing */
/* per-cx18, i_flags */ #define CX18_F_I_LOADED_FW 0 /* Loaded firmware 1st time */ #define CX18_F_I_EOS 4 /* End of encoder stream */ #define CX18_F_I_RADIO_USER 5 /* radio tuner is selected */ #define CX18_F_I_ENC_PAUSED 13 /* the encoder is paused */ #define CX18_F_I_INITED 21 /* set after first open */ #define CX18_F_I_FAILED 22 /* set if first open failed */
/* These are the VBI types as they appear in the embedded VBI private packets. */ #define CX18_SLICED_TYPE_TELETEXT_B (1) #define CX18_SLICED_TYPE_CAPTION_525 (4) #define CX18_SLICED_TYPE_WSS_625 (5) #define CX18_SLICED_TYPE_VPS (7)
struct cx18_vb2_buffer { /* Common video buffer sub-system struct */ struct vb2_v4l2_buffer vb; struct list_head list;
v4l2_std_id tvnorm; /* selected tv norm */
u32 bytes_used;
};
#define CX18_MAX_MDL_ACKS 2 #define CX18_MAX_IN_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7) /* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */
struct cx18_stream { /* These first five fields are always set, even if the stream
is not actually created. */ struct video_device video_dev; /* v4l2_dev is NULL when stream not created */ struct cx18_dvb *dvb; /* DVB / Digital Transport */ struct cx18 *cx; /* for ease of use */ constchar *name; /* name of the stream */ int type; /* stream type */
u32 handle; /* task handle */
u32 v4l2_dev_caps; /* device capabilities */ unsignedint mdl_base_idx;
u32 id; unsignedlong s_flags; /* status flags, see above */ int dma; /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or
PCI_DMA_NONE */
wait_queue_head_t waitq;
/* Buffers */ struct list_head buf_pool; /* buffers not attached to an MDL */
u32 buffers; /* total buffers owned by this stream */
u32 buf_size; /* size in bytes of a single buffer */
/* MDL sizes - all stream MDLs are the same size */
u32 bufs_per_mdl;
u32 mdl_size; /* total bytes in all buffers in a mdl */
/* MDL Queues */ struct cx18_queue q_free; /* free - in rotation, not committed */ struct cx18_queue q_busy; /* busy - in use by firmware */ struct cx18_queue q_full; /* full - data for user apps */ struct cx18_queue q_idle; /* idle - not in rotation */
struct work_struct out_work_order;
/* Videobuf for YUV video */
u32 pixelformat;
u32 vb_bytes_per_frame;
u32 vb_bytes_per_line; struct list_head vb_capture; /* video capture queue */
spinlock_t vb_lock; struct timer_list vb_timeout;
u32 sequence;
/* forward declaration of struct defined in cx18-cards.h */ struct cx18_card;
/* * A note about "sliced" VBI data as implemented in this driver: * * Currently we collect the sliced VBI in the form of Ancillary Data * packets, inserted by the AV core decoder/digitizer/slicer in the * horizontal blanking region of the VBI lines, in "raw" mode as far as * the Encoder is concerned. We don't ever tell the Encoder itself * to provide sliced VBI. (AV Core: sliced mode - Encoder: raw mode) * * We then process the ancillary data ourselves to send the sliced data * to the user application directly or build up MPEG-2 private stream 1 * packets to splice into (only!) MPEG-2 PS streams for the user app. * * (That's how ivtv essentially does it.) * * The Encoder should be able to extract certain sliced VBI data for * us and provide it in a separate stream or splice it into any type of * MPEG PS or TS stream, but this isn't implemented yet.
*/
/* * Number of "raw" VBI samples per horizontal line we tell the Encoder to * grab from the decoder/digitizer/slicer output for raw or sliced VBI. * It depends on the pixel clock and the horiz rate: * * (1/Fh)*(2*Fp) = Samples/line * = 4 bytes EAV + Anc data in hblank + 4 bytes SAV + active samples * * Sliced VBI data is sent as ancillary data during horizontal blanking * Raw VBI is sent as active video samples during vertcal blanking * * We use a BT.656 pxiel clock of 13.5 MHz and a BT.656 active line * length of 720 pixels @ 4:2:2 sampling. Thus... * * For systems that use a 15.734 kHz horizontal rate, such as * NTSC-M, PAL-M, PAL-60, and other 60 Hz/525 line systems, we have: * * (1/15.734 kHz) * 2 * 13.5 MHz = 1716 samples/line = * 4 bytes SAV + 268 bytes anc data + 4 bytes SAV + 1440 active samples * * For systems that use a 15.625 kHz horizontal rate, such as * PAL-B/G/H, PAL-I, SECAM-L and other 50 Hz/625 line systems, we have: * * (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line = * 4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples
*/ #define VBI_ACTIVE_SAMPLES 1444 /* 4 byte SAV + 720 Y + 720 U/V */ #define VBI_HBLANK_SAMPLES_60HZ 272 /* 4 byte EAV + 268 anc/fill */ #define VBI_HBLANK_SAMPLES_50HZ 284 /* 4 byte EAV + 280 anc/fill */
#define CX18_VBI_FRAMES 32
struct vbi_info { /* Current state of v4l2 VBI settings for this device */ struct v4l2_format in; struct v4l2_sliced_vbi_format *sliced_in; /* pointer to in.fmt.sliced */
u32 count; /* Count of VBI data lines: 60 Hz: 12 or 50 Hz: 18 */
u32 start[2]; /* First VBI data line per field: 10 & 273 or 6 & 318 */
u32 frame; /* Count of VBI buffers/frames received from Encoder */
/* * Vars for creation and insertion of MPEG Private Stream 1 packets * of sliced VBI data into an MPEG PS
*/
/* Boolean: create and insert Private Stream 1 packets into the PS */ int insert_mpeg;
/* * Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines. * Used in cx18-vbi.c only for collecting sliced data, and as a source * during conversion of sliced VBI data into MPEG Priv Stream 1 packets. * We don't need to save state here, but the array may have been a bit * too big (2304 bytes) to alloc from the stack.
*/ struct v4l2_sliced_vbi_data sliced_data[36];
/* * A ring buffer of driver-generated MPEG-2 PS * Program Pack/Private Stream 1 packets for sliced VBI data insertion * into the MPEG PS stream. * * In each sliced_mpeg_data[] buffer is: * 16 byte MPEG-2 PS Program Pack Header * 16 byte MPEG-2 Private Stream 1 PES Header * 4 byte magic number: "itv0" or "ITV0" * 4 byte first field line mask, if "itv0" * 4 byte second field line mask, if "itv0" * 36 lines, if "ITV0"; or <36 lines, if "itv0"; of sliced VBI data * * Each line in the payload is * 1 byte line header derived from the SDID (WSS, CC, VPS, etc.) * 42 bytes of line data * * That's a maximum 1552 bytes of payload in the Private Stream 1 packet * which is the payload size a PVR-350 (CX23415) MPEG decoder will * accept for VBI data. So, including the headers, it's a maximum 1584 * bytes total.
*/ #define CX18_SLICED_MPEG_DATA_MAXSZ 1584 /* copy_vbi_buf() needs 8 temp bytes on the end for the worst case */ #define CX18_SLICED_MPEG_DATA_BUFSZ (CX18_SLICED_MPEG_DATA_MAXSZ+8)
u8 *sliced_mpeg_data[CX18_VBI_FRAMES];
u32 sliced_mpeg_size[CX18_VBI_FRAMES];
/* Count of Program Pack/Program Stream 1 packets inserted into PS */
u32 inserted_frame;
/* * A dummy driver stream transfer mdl & buffer with a copy of the next * sliced_mpeg_data[] buffer for output to userland apps. * Only used in cx18-fileops.c, but its state needs to persist at times.
*/ struct cx18_mdl sliced_mpeg_mdl; struct cx18_buffer sliced_mpeg_buf;
};
/* Per cx23418, per I2C bus private algo callback data */ struct cx18_i2c_algo_callback_data { struct cx18 *cx; int bus_index; /* 0 or 1 for the cx23418's 1st or 2nd I2C bus */
};
#define CX18_MAX_MMIO_WR_RETRIES 10
/* Struct to hold info about cx18 cards */ struct cx18 { int instance; struct pci_dev *pci_dev; struct v4l2_device v4l2_dev; struct v4l2_subdev *sd_av; /* A/V decoder/digitizer sub-device */ struct v4l2_subdev *sd_extmux; /* External multiplexer sub-dev */
conststruct cx18_card *card; /* card information */ constchar *card_name; /* full name of the card */ conststruct cx18_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
u8 is_50hz;
u8 is_60hz;
u8 nof_inputs; /* number of video inputs */
u8 nof_audio_inputs; /* number of audio inputs */
u32 v4l2_cap; /* V4L2 capabilities of card */
u32 hw_flags; /* Hardware description of the board */ unsignedint free_mdl_idx; struct cx18_scb __iomem *scb; /* pointer to SCB */ struct mutex epu2apu_mb_lock; /* protect driver to chip mailbox in SCB*/ struct mutex epu2cpu_mb_lock; /* protect driver to chip mailbox in SCB*/
struct mutex serialize_lock; /* mutex used to serialize open/close/start/stop/ioctl operations */ struct cx18_options options; /* User options */ int stream_buffers[CX18_MAX_STREAMS]; /* # of buffers for each stream */ int stream_buf_size[CX18_MAX_STREAMS]; /* Stream buffer size */ struct cx18_stream streams[CX18_MAX_STREAMS]; /* Stream data */ struct snd_cx18_card *alsa; /* ALSA interface for PCM capture stream */ void (*pcm_announce_callback)(struct snd_cx18_card *card, u8 *pcm_data,
size_t num_bytes);
unsignedlong i_flags; /* global cx18 flags */
atomic_t ana_capturing; /* count number of active analog capture streams */
atomic_t tot_capturing; /* total count number of active capture streams */ int search_pack_header;
int open_id; /* incremented each time an open occurs, used as unique ID. Starts at 1, so 0 can be used as
uninitialized value in the stream->id. */
resource_size_t base_addr;
u8 card_rev; void __iomem *enc_mem, *reg_mem;
struct vbi_info vbi;
u64 mpg_data_received;
u64 vbi_data_inserted;
wait_queue_head_t mb_apu_waitq;
wait_queue_head_t mb_cpu_waitq;
wait_queue_head_t cap_w; /* when the current DMA is finished this queue is woken up */
wait_queue_head_t dma_waitq;
/* First-open initialization: load firmware, etc. */ int cx18_init_on_first_open(struct cx18 *cx);
/* Test if the current VBI mode is raw (1) or sliced (0) */ staticinlineint cx18_raw_vbi(conststruct cx18 *cx)
{ return cx->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
}
/* Call the specified callback for all subdevs with a grp_id bit matching the
* mask in hw (if 0, then match them all). Ignore any errors. */ #define cx18_call_hw(cx, hw, o, f, args...) \
v4l2_device_mask_call_all(&(cx)->v4l2_dev, hw, o, f, ##args)
#define cx18_call_all(cx, o, f, args...) cx18_call_hw(cx, 0, o, f , ##args)
/* Call the specified callback for all subdevs with a grp_id bit matching the * mask in hw (if 0, then match them all). If the callback returns an error
* other than 0 or -ENOIOCTLCMD, then return with that error code. */ #define cx18_call_hw_err(cx, hw, o, f, args...) \
v4l2_device_mask_call_until_err(&(cx)->v4l2_dev, hw, o, f, ##args)
#define cx18_call_all_err(cx, o, f, args...) \
cx18_call_hw_err(cx, 0, o, f , ##args)
#endif/* CX18_DRIVER_H */
Messung V0.5
¤ Dauer der Verarbeitung: 0.34 Sekunden
(vorverarbeitet)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.