/* This function tries to claim the stream for a specific file descriptor.
If no one else is using this stream then the stream is claimed and
associated VBI streams are also automatically claimed.
Possible error returns: -EBUSY if someone else has claimed
the stream or 0 on success. */
int ivtv_claim_stream(struct ivtv_open_id *id, int type)
{
struct ivtv *itv = id->itv;
struct ivtv_stream *s = &itv->streams[type];
struct ivtv_stream *s_vbi;
int vbi_type;
if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) {
/* someone already claimed this stream */
if (s->fh == &id->fh) {
/* yes, this file descriptor did. So that's OK. */
return 0;
}
if (s->fh == NULL && (type == IVTV_DEC_STREAM_TYPE_VBI ||
type == IVTV_ENC_STREAM_TYPE_VBI)) {
/* VBI is handled already internally, now also assign
the file descriptor to this stream for external
reading of the stream. */
s->fh = &id->fh;
IVTV_DEBUG_INFO("Start Read VBI\n");
return 0;
}
/* someone else is using this stream already */
IVTV_DEBUG_INFO("Stream %d is busy\n", type);
return -EBUSY;
}
s->fh = &id->fh;
if (type == IVTV_DEC_STREAM_TYPE_VBI) {
/* Enable reinsertion interrupt */
ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT);
}
/* IVTV_DEC_STREAM_TYPE_MPG needs to claim IVTV_DEC_STREAM_TYPE_VBI,
IVTV_ENC_STREAM_TYPE_MPG needs to claim IVTV_ENC_STREAM_TYPE_VBI
(provided VBI insertion is on and sliced VBI is selected), for all
other streams we're done */
if (type == IVTV_DEC_STREAM_TYPE_MPG) {
vbi_type = IVTV_DEC_STREAM_TYPE_VBI;
} else if (type == IVTV_ENC_STREAM_TYPE_MPG &&
itv->vbi.insert_mpeg && !ivtv_raw_vbi(itv)) {
vbi_type = IVTV_ENC_STREAM_TYPE_VBI;
} else {
return 0;
}
s_vbi = &itv->streams[vbi_type];
if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) {
/* Enable reinsertion interrupt */
if (vbi_type == IVTV_DEC_STREAM_TYPE_VBI)
ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT);
}
/* mark that it is used internally */
set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags);
return 0;
}
int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
{
struct ivtv *itv = s->itv;
int rc;
if (s->vdev == NULL)
return -EINVAL;
if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
return 0; /* already started */
IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
rc = ivtv_setup_v4l2_decode_stream(s);
if (rc < 0) {
clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
return rc;
}
/* set dma size to 65536 bytes */
ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
/* Clear Streamoff */
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
/* Zero out decoder counters */
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
/* turn on notification of dual/stereo mode change */
ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
/* start playback */
ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
/* Let things settle before we actually start */
ivtv_msleep_timeout(10, 0);
/* Clear the following Interrupt mask bits for decoding */
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
/* you're live! sit back and await interrupts :) */
atomic_inc(&itv->decoding);
return 0;
}
int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
{
struct ivtv *itv = s->itv;
int rc;
if (s->vdev == NULL)
return -EINVAL;
if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
return 0; /* */
IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
rc = ivtv_setup_v4l2_decode_stream(s);
if (rc < 0) {
clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
return rc;
}
/* */
ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
/* */
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
/* */
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
/* */
ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
/* */
ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
/* */
ivtv_msleep_timeout(10, 0);
/* */
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
/* */
atomic_inc(&itv->decoding);
return 0;
}
int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
{
u32 data[CX2341X_MBOX_MAX_DATA];
struct ivtv *itv = s->itv;
int captype = 0, subtype = 0;
int enable_passthrough = 0;
if (s->vdev == NULL)
return -EINVAL;
IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
switch (s->type) {
case IVTV_ENC_STREAM_TYPE_MPG:
captype = 0;
subtype = 3;
/* Stop Passthrough */
if (itv->output_mode == OUT_PASSTHROUGH) {
ivtv_passthrough_mode(itv, 0);
enable_passthrough = 1;
}
itv->mpg_data_received = itv->vbi_data_inserted = 0;
itv->dualwatch_jiffies = jiffies;
itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);
itv->search_pack_header = 0;
break;
case IVTV_ENC_STREAM_TYPE_YUV:
if (itv->output_mode == OUT_PASSTHROUGH) {
captype = 2;
subtype = 11; /* video+audio+decoder */
break;
}
captype = 1;
subtype = 1;
break;
case IVTV_ENC_STREAM_TYPE_PCM:
captype = 1;
subtype = 2;
break;
case IVTV_ENC_STREAM_TYPE_VBI:
captype = 1;
subtype = 4;
itv->vbi.frame = 0;
itv->vbi.inserted_frame = 0;
memset(itv->vbi.sliced_mpeg_size,
0, sizeof(itv->vbi.sliced_mpeg_size));
break;
default:
return -EINVAL;
}
s->subtype = subtype;
s->buffers_stolen = 0;
/* Clear Streamoff flags in case left from last capture */
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
if (atomic_read(&itv->capturing) == 0) {
int digitizer;
/* Always use frame based mode. Experiments have demonstrated that byte
stream based mode results in dropped frames and corruption. Not often,
but occasionally. Many thanks go to Leonard Orb who spent a lot of
effort and time trying to trace the cause of the drop outs. */
/* 1 frame per DMA */
/*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
/* Stuff from Windows, we don't know what it is */
ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
/* According to the docs, this should be correct. However, this is
untested. I don't dare enable this without having tested it.
Only very few old cards actually have this hardware combination.
ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
*/
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
/* assign placeholder */
ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
digitizer = 0xF1;
else if (itv->card->hw_all & IVTV_HW_SAA7114)
digitizer = 0xEF;
else /* cx25840 */
digitizer = 0x140;
ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
/* Setup VBI */
if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
ivtv_vbi_setup(itv);
}
/* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
itv->pgm_info_offset = data[0];
itv->pgm_info_num = data[1];
itv->pgm_info_write_idx = 0;
itv->pgm_info_read_idx = 0;
IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
itv->pgm_info_offset, itv->pgm_info_num);
/* Setup API for Stream */
cx2341x_handler_setup(&itv->cxhdl);
/* mute if capturing radio */
if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
}
/* Vsync Setup */
if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
/* event notification (on) */
ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
}
if (atomic_read(&itv->capturing) == 0) {
/* Clear all Pending Interrupts */
ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
clear_bit(IVTV_F_I_EOS, &itv->i_flags);
cx2341x_handler_set_busy(&itv->cxhdl, 1);
/* Initialize Digitizer for Capture */
/* Avoid tinny audio problem - ensure audio clocks are going */
v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
/* Avoid unpredictable PCI bus hang - disable video clocks */
v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
ivtv_msleep_timeout(300, 0);
ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
}
/* begin_capture */
if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
{
IVTV_DEBUG_WARN( "Error starting capture!\n");
return -EINVAL;
}
/* Start Passthrough */
if (enable_passthrough) {
ivtv_passthrough_mode(itv, 1);
}
if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
else
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
/* you're live! sit back and await interrupts :) */
atomic_inc(&itv->capturing);
return 0;
}
int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
{
u32 data[CX2341X_MBOX_MAX_DATA];
struct ivtv *itv = s->itv;
int captype = 0, subtype = 0;
int enable_passthrough = 0;
if (s->vdev == NULL)
return -EINVAL;
IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
switch (s->type) {
case IVTV_ENC_STREAM_TYPE_MPG:
captype = 0;
subtype = 3;
/* */
if (itv->output_mode == OUT_PASSTHROUGH) {
ivtv_passthrough_mode(itv, 0);
enable_passthrough = 1;
}
itv->mpg_data_received = itv->vbi_data_inserted = 0;
itv->dualwatch_jiffies = jiffies;
itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);
itv->search_pack_header = 0;
break;
case IVTV_ENC_STREAM_TYPE_YUV:
if (itv->output_mode == OUT_PASSTHROUGH) {
captype = 2;
subtype = 11; /* */
break;
}
captype = 1;
subtype = 1;
break;
case IVTV_ENC_STREAM_TYPE_PCM:
captype = 1;
subtype = 2;
break;
case IVTV_ENC_STREAM_TYPE_VBI:
captype = 1;
subtype = 4;
itv->vbi.frame = 0;
itv->vbi.inserted_frame = 0;
memset(itv->vbi.sliced_mpeg_size,
0, sizeof(itv->vbi.sliced_mpeg_size));
break;
default:
return -EINVAL;
}
s->subtype = subtype;
s->buffers_stolen = 0;
/* */
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
if (atomic_read(&itv->capturing) == 0) {
int digitizer;
/*
*/
/* */
/* */
ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
/* */
ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
/*
*/
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
/* */
ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
digitizer = 0xF1;
else if (itv->card->hw_all & IVTV_HW_SAA7114)
digitizer = 0xEF;
else /* */
digitizer = 0x140;
ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
/* */
if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
ivtv_vbi_setup(itv);
}
/* */
ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
itv->pgm_info_offset = data[0];
itv->pgm_info_num = data[1];
itv->pgm_info_write_idx = 0;
itv->pgm_info_read_idx = 0;
IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
itv->pgm_info_offset, itv->pgm_info_num);
/* */
cx2341x_handler_setup(&itv->cxhdl);
/* */
if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
}
/* */
if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
/* */
ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
}
if (atomic_read(&itv->capturing) == 0) {
/* */
ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
clear_bit(IVTV_F_I_EOS, &itv->i_flags);
cx2341x_handler_set_busy(&itv->cxhdl, 1);
/* */
/* */
v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
/* */
v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
ivtv_msleep_timeout(300, 0);
ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
}
/* */
if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
{
IVTV_DEBUG_WARN( "Error starting capture!\n");
return -EINVAL;
}
/* */
if (enable_passthrough) {
ivtv_passthrough_mode(itv, 1);
}
if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
else
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
/* */
atomic_inc(&itv->capturing);
return 0;
}
