linux/drivers/media/pci/ivtv/ivtv-controls.c
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   1/*
   2    ioctl control functions
   3    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#include "ivtv-driver.h"
  22#include "ivtv-ioctl.h"
  23#include "ivtv-controls.h"
  24#include "ivtv-mailbox.h"
  25
  26static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
  27{
  28        struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  29
  30        /* First try to allocate sliced VBI buffers if needed. */
  31        if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
  32                int i;
  33
  34                for (i = 0; i < IVTV_VBI_FRAMES; i++) {
  35                        /* Yuck, hardcoded. Needs to be a define */
  36                        itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
  37                        if (itv->vbi.sliced_mpeg_data[i] == NULL) {
  38                                while (--i >= 0) {
  39                                        kfree(itv->vbi.sliced_mpeg_data[i]);
  40                                        itv->vbi.sliced_mpeg_data[i] = NULL;
  41                                }
  42                                return -ENOMEM;
  43                        }
  44                }
  45        }
  46
  47        itv->vbi.insert_mpeg = fmt;
  48
  49        if (itv->vbi.insert_mpeg == 0) {
  50                return 0;
  51        }
  52        /* Need sliced data for mpeg insertion */
  53        if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
  54                if (itv->is_60hz)
  55                        itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
  56                else
  57                        itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
  58                ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
  59        }
  60        return 0;
  61}
  62
  63static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
  64{
  65        struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  66        int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
  67        struct v4l2_subdev_format format = {
  68                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
  69        };
  70
  71        /* fix videodecoder resolution */
  72        format.format.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
  73        format.format.height = cxhdl->height;
  74        format.format.code = MEDIA_BUS_FMT_FIXED;
  75        v4l2_subdev_call(itv->sd_video, pad, set_fmt, NULL, &format);
  76        return 0;
  77}
  78
  79static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
  80{
  81        static const u32 freqs[3] = { 44100, 48000, 32000 };
  82        struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  83
  84        /* The audio clock of the digitizer must match the codec sample
  85           rate otherwise you get some very strange effects. */
  86        if (idx < ARRAY_SIZE(freqs))
  87                ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
  88        return 0;
  89}
  90
  91static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
  92{
  93        struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  94
  95        itv->dualwatch_stereo_mode = val;
  96        return 0;
  97}
  98
  99const struct cx2341x_handler_ops ivtv_cxhdl_ops = {
 100        .s_audio_mode = ivtv_s_audio_mode,
 101        .s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
 102        .s_video_encoding = ivtv_s_video_encoding,
 103        .s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
 104};
 105
 106int ivtv_g_pts_frame(struct ivtv *itv, s64 *pts, s64 *frame)
 107{
 108        u32 data[CX2341X_MBOX_MAX_DATA];
 109
 110        if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
 111                *pts = (s64)((u64)itv->last_dec_timing[2] << 32) |
 112                        (u64)itv->last_dec_timing[1];
 113                *frame = itv->last_dec_timing[0];
 114                return 0;
 115        }
 116        *pts = 0;
 117        *frame = 0;
 118        if (atomic_read(&itv->decoding)) {
 119                if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
 120                        IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
 121                        return -EIO;
 122                }
 123                memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
 124                set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
 125                *pts = (s64)((u64) data[2] << 32) | (u64) data[1];
 126                *frame = data[0];
 127                /*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
 128        }
 129        return 0;
 130}
 131
 132static int ivtv_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 133{
 134        struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 135
 136        switch (ctrl->id) {
 137        /* V4L2_CID_MPEG_VIDEO_DEC_PTS and V4L2_CID_MPEG_VIDEO_DEC_FRAME
 138           control cluster */
 139        case V4L2_CID_MPEG_VIDEO_DEC_PTS:
 140                return ivtv_g_pts_frame(itv, itv->ctrl_pts->p_new.p_s64,
 141                                             itv->ctrl_frame->p_new.p_s64);
 142        }
 143        return 0;
 144}
 145
 146static int ivtv_s_ctrl(struct v4l2_ctrl *ctrl)
 147{
 148        struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 149
 150        switch (ctrl->id) {
 151        /* V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK and MULTILINGUAL_PLAYBACK
 152           control cluster */
 153        case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
 154                itv->audio_stereo_mode = itv->ctrl_audio_playback->val - 1;
 155                itv->audio_bilingual_mode = itv->ctrl_audio_multilingual_playback->val - 1;
 156                ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
 157                break;
 158        }
 159        return 0;
 160}
 161
 162const struct v4l2_ctrl_ops ivtv_hdl_out_ops = {
 163        .s_ctrl = ivtv_s_ctrl,
 164        .g_volatile_ctrl = ivtv_g_volatile_ctrl,
 165};
 166