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;
}