diff options
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-v4l2.c | 70 |
1 files changed, 57 insertions, 13 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c index 5e2292726e94..e878c6445ae2 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c +++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c @@ -67,6 +67,10 @@ struct pvr2_v4l2 { struct v4l2_prio_state prio; + /* Map contiguous ordinal value to input id */ + unsigned char *input_map; + unsigned int input_cnt; + /* streams - Note that these must be separately, individually, * allocated pointers. This is because the v4l core is going to * manage their deletion - separately, individually... */ @@ -259,13 +263,19 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file, struct v4l2_input *vi = (struct v4l2_input *)arg; struct v4l2_input tmp; unsigned int cnt; + int val; cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); memset(&tmp,0,sizeof(tmp)); tmp.index = vi->index; ret = 0; - switch (vi->index) { + if ((vi->index < 0) || (vi->index >= vp->input_cnt)) { + ret = -EINVAL; + break; + } + val = vp->input_map[vi->index]; + switch (val) { case PVR2_CVAL_INPUT_TV: case PVR2_CVAL_INPUT_DTV: case PVR2_CVAL_INPUT_RADIO: @@ -282,7 +292,7 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file, if (ret < 0) break; cnt = 0; - pvr2_ctrl_get_valname(cptr,vi->index, + pvr2_ctrl_get_valname(cptr,val, tmp.name,sizeof(tmp.name)-1,&cnt); tmp.name[cnt] = 0; @@ -304,22 +314,33 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file, case VIDIOC_G_INPUT: { + unsigned int idx; struct pvr2_ctrl *cptr; struct v4l2_input *vi = (struct v4l2_input *)arg; int val; cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); val = 0; ret = pvr2_ctrl_get_value(cptr,&val); - vi->index = val; + vi->index = 0; + for (idx = 0; idx < vp->input_cnt; idx++) { + if (vp->input_map[idx] == val) { + vi->index = idx; + break; + } + } break; } case VIDIOC_S_INPUT: { struct v4l2_input *vi = (struct v4l2_input *)arg; + if ((vi->index < 0) || (vi->index >= vp->input_cnt)) { + ret = -ERANGE; + break; + } ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT), - vi->index); + vp->input_map[vi->index]); break; } @@ -818,6 +839,10 @@ static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp) pvr2_v4l2_dev_destroy(vp->dev_radio); vp->dev_radio = NULL; } + if (vp->input_map) { + kfree(vp->input_map); + vp->input_map = NULL; + } pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp); pvr2_channel_done(&vp->channel); @@ -1199,27 +1224,46 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip, struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp) { struct pvr2_v4l2 *vp; + struct pvr2_hdw *hdw; + unsigned int input_mask,input_cnt,idx; vp = kzalloc(sizeof(*vp),GFP_KERNEL); if (!vp) return vp; - vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL); - vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL); - if (!(vp->dev_video && vp->dev_radio)) { - kfree(vp->dev_video); - kfree(vp->dev_radio); - kfree(vp); - return NULL; - } pvr2_channel_init(&vp->channel,mnp); pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp); vp->channel.check_func = pvr2_v4l2_internal_check; + hdw = vp->channel.mc_head->hdw; + input_mask = pvr2_hdw_get_input_available(hdw); + input_cnt = 0; + for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) { + if (input_mask & (1 << idx)) input_cnt++; + } + vp->input_cnt = input_cnt; + vp->input_map = kzalloc(input_cnt,GFP_KERNEL); + if (!vp->input_map) goto fail; + input_cnt = 0; + for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) { + if (!(input_mask & (1 << idx))) continue; + vp->input_map[input_cnt++] = idx; + } + /* register streams */ + vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL); + if (!vp->dev_video) goto fail; pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER); - pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO); + if (input_mask & (1 << PVR2_CVAL_INPUT_RADIO)) { + vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL); + if (!vp->dev_radio) goto fail; + pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO); + } return vp; + fail: + pvr2_trace(PVR2_TRACE_STRUCT,"Failure creating pvr2_v4l2 id=%p",vp); + pvr2_v4l2_destroy_no_lock(vp); + return 0; } /* |