mirror of https://gitee.com/openkylin/linux.git
164 lines
5.0 KiB
C
164 lines
5.0 KiB
C
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/*
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ioctl control functions
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Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
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Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "ivtv-driver.h"
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#include "ivtv-ioctl.h"
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#include "ivtv-controls.h"
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#include "ivtv-mailbox.h"
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static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
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{
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struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
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/* First try to allocate sliced VBI buffers if needed. */
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if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
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int i;
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for (i = 0; i < IVTV_VBI_FRAMES; i++) {
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/* Yuck, hardcoded. Needs to be a define */
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itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
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if (itv->vbi.sliced_mpeg_data[i] == NULL) {
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while (--i >= 0) {
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kfree(itv->vbi.sliced_mpeg_data[i]);
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itv->vbi.sliced_mpeg_data[i] = NULL;
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}
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return -ENOMEM;
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}
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}
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}
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itv->vbi.insert_mpeg = fmt;
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if (itv->vbi.insert_mpeg == 0) {
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return 0;
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}
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/* Need sliced data for mpeg insertion */
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if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
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if (itv->is_60hz)
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itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
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else
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itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
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ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
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}
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return 0;
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}
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static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
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{
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struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
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int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
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struct v4l2_mbus_framefmt fmt;
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/* fix videodecoder resolution */
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fmt.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
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fmt.height = cxhdl->height;
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fmt.code = V4L2_MBUS_FMT_FIXED;
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v4l2_subdev_call(itv->sd_video, video, s_mbus_fmt, &fmt);
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return 0;
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}
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static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
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{
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static const u32 freqs[3] = { 44100, 48000, 32000 };
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struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
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/* The audio clock of the digitizer must match the codec sample
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rate otherwise you get some very strange effects. */
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if (idx < ARRAY_SIZE(freqs))
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ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
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return 0;
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}
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static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
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{
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struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
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itv->dualwatch_stereo_mode = val;
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return 0;
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}
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struct cx2341x_handler_ops ivtv_cxhdl_ops = {
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.s_audio_mode = ivtv_s_audio_mode,
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.s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
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.s_video_encoding = ivtv_s_video_encoding,
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.s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
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};
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int ivtv_g_pts_frame(struct ivtv *itv, s64 *pts, s64 *frame)
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{
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u32 data[CX2341X_MBOX_MAX_DATA];
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if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
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*pts = (s64)((u64)itv->last_dec_timing[2] << 32) |
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(u64)itv->last_dec_timing[1];
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*frame = itv->last_dec_timing[0];
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return 0;
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}
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*pts = 0;
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*frame = 0;
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if (atomic_read(&itv->decoding)) {
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if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
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IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
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return -EIO;
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}
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memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
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set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
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*pts = (s64)((u64) data[2] << 32) | (u64) data[1];
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*frame = data[0];
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/*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
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}
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return 0;
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}
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static int ivtv_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
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switch (ctrl->id) {
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/* V4L2_CID_MPEG_VIDEO_DEC_PTS and V4L2_CID_MPEG_VIDEO_DEC_FRAME
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control cluster */
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case V4L2_CID_MPEG_VIDEO_DEC_PTS:
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return ivtv_g_pts_frame(itv, &itv->ctrl_pts->val64,
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&itv->ctrl_frame->val64);
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}
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return 0;
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}
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static int ivtv_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
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switch (ctrl->id) {
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/* V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK and MULTILINGUAL_PLAYBACK
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control cluster */
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case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
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itv->audio_stereo_mode = itv->ctrl_audio_playback->val - 1;
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itv->audio_bilingual_mode = itv->ctrl_audio_multilingual_playback->val - 1;
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ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
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break;
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}
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return 0;
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}
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const struct v4l2_ctrl_ops ivtv_hdl_out_ops = {
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.s_ctrl = ivtv_s_ctrl,
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.g_volatile_ctrl = ivtv_g_volatile_ctrl,
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};
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