root/drivers/media/pci/ivtv/ivtv-controls.c

DEFINITIONS

1. ivtv_s_stream_vbi_fmt
2. ivtv_s_video_encoding
3. ivtv_s_audio_sampling_freq
4. ivtv_s_audio_mode
5. ivtv_g_pts_frame
6. ivtv_g_volatile_ctrl
7. ivtv_s_ctrl

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3     ioctl control functions
   4     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   6 
   7  */
   8 
   9 #include "ivtv-driver.h"
  10 #include "ivtv-ioctl.h"
  11 #include "ivtv-controls.h"
  12 #include "ivtv-mailbox.h"
  13 
  14 static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
  15 {
  16         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  17 
  18         /* First try to allocate sliced VBI buffers if needed. */
  19         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
  20                 int i;
  21 
  22                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
  23                         /* Yuck, hardcoded. Needs to be a define */
  24                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
  25                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
  26                                 while (--i >= 0) {
  27                                         kfree(itv->vbi.sliced_mpeg_data[i]);
  28                                         itv->vbi.sliced_mpeg_data[i] = NULL;
  29                                 }
  30                                 return -ENOMEM;
  31                         }
  32                 }
  33         }
  34 
  35         itv->vbi.insert_mpeg = fmt;
  36 
  37         if (itv->vbi.insert_mpeg == 0) {
  38                 return 0;
  39         }
  40         /* Need sliced data for mpeg insertion */
  41         if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
  42                 if (itv->is_60hz)
  43                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
  44                 else
  45                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
  46                 ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
  47         }
  48         return 0;
  49 }
  50 
  51 static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
  52 {
  53         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  54         int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
  55         struct v4l2_subdev_format format = {
  56                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
  57         };
  58 
  59         /* fix videodecoder resolution */
  60         format.format.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
  61         format.format.height = cxhdl->height;
  62         format.format.code = MEDIA_BUS_FMT_FIXED;
  63         v4l2_subdev_call(itv->sd_video, pad, set_fmt, NULL, &format);
  64         return 0;
  65 }
  66 
  67 static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
  68 {
  69         static const u32 freqs[3] = { 44100, 48000, 32000 };
  70         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  71 
  72         /* The audio clock of the digitizer must match the codec sample
  73            rate otherwise you get some very strange effects. */
  74         if (idx < ARRAY_SIZE(freqs))
  75                 ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
  76         return 0;
  77 }
  78 
  79 static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
  80 {
  81         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  82 
  83         itv->dualwatch_stereo_mode = val;
  84         return 0;
  85 }
  86 
  87 const struct cx2341x_handler_ops ivtv_cxhdl_ops = {
  88         .s_audio_mode = ivtv_s_audio_mode,
  89         .s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
  90         .s_video_encoding = ivtv_s_video_encoding,
  91         .s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
  92 };
  93 
  94 int ivtv_g_pts_frame(struct ivtv *itv, s64 *pts, s64 *frame)
  95 {
  96         u32 data[CX2341X_MBOX_MAX_DATA];
  97 
  98         if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
  99                 *pts = (s64)((u64)itv->last_dec_timing[2] << 32) |
 100                         (u64)itv->last_dec_timing[1];
 101                 *frame = itv->last_dec_timing[0];
 102                 return 0;
 103         }
 104         *pts = 0;
 105         *frame = 0;
 106         if (atomic_read(&itv->decoding)) {
 107                 if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
 108                         IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
 109                         return -EIO;
 110                 }
 111                 memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
 112                 set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
 113                 *pts = (s64)((u64) data[2] << 32) | (u64) data[1];
 114                 *frame = data[0];
 115                 /*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
 116         }
 117         return 0;
 118 }
 119 
 120 static int ivtv_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 121 {
 122         struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 123 
 124         switch (ctrl->id) {
 125         /* V4L2_CID_MPEG_VIDEO_DEC_PTS and V4L2_CID_MPEG_VIDEO_DEC_FRAME
 126            control cluster */
 127         case V4L2_CID_MPEG_VIDEO_DEC_PTS:
 128                 return ivtv_g_pts_frame(itv, itv->ctrl_pts->p_new.p_s64,
 129                                              itv->ctrl_frame->p_new.p_s64);
 130         }
 131         return 0;
 132 }
 133 
 134 static int ivtv_s_ctrl(struct v4l2_ctrl *ctrl)
 135 {
 136         struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 137 
 138         switch (ctrl->id) {
 139         /* V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK and MULTILINGUAL_PLAYBACK
 140            control cluster */
 141         case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
 142                 itv->audio_stereo_mode = itv->ctrl_audio_playback->val - 1;
 143                 itv->audio_bilingual_mode = itv->ctrl_audio_multilingual_playback->val - 1;
 144                 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
 145                 break;
 146         }
 147         return 0;
 148 }
 149 
 150 const struct v4l2_ctrl_ops ivtv_hdl_out_ops = {
 151         .s_ctrl = ivtv_s_ctrl,
 152         .g_volatile_ctrl = ivtv_g_volatile_ctrl,
 153 };