[media] saa7164: allow the IBP reference distance to be configurable

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/saa7164/saa7164-api.c b/drivers/media/video/saa7164/saa7164-api.c
index fec5138..34ac648 100644 (file)
--- a/drivers/media/video/saa7164/saa7164-api.c
+++ b/drivers/media/video/saa7164/saa7164-api.c
@@ -32,7 +32,7 @@ int saa7164_api_set_gop_size(struct saa7164_port *port)
 
        dprintk(DBGLVL_ENC, "%s()\n", __func__);
 
-       gs.ucRefFrameDist = SAA7164_ENCODER_DEFAULT_GOP_DIST;
+       gs.ucRefFrameDist = port->encoder_params.refdist;
        gs.ucGOPSize = SAA7164_ENCODER_DEFAULT_GOP_SIZE;
        ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
                EU_VIDEO_GOP_STRUCTURE_CONTROL,

diff --git a/drivers/media/video/saa7164/saa7164-encoder.c b/drivers/media/video/saa7164/saa7164-encoder.c
index d7d2fe0..5cab466 100644 (file)
--- a/drivers/media/video/saa7164/saa7164-encoder.c
+++ b/drivers/media/video/saa7164/saa7164-encoder.c
@@ -47,6 +47,7 @@ static const u32 saa7164_v4l2_ctrls[] = {
        V4L2_CID_MPEG_AUDIO_MUTE,
        V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
        V4L2_CID_MPEG_VIDEO_BITRATE,
+       V4L2_CID_MPEG_VIDEO_B_FRAMES,
        0
 };
 
@@ -383,6 +384,9 @@ static int saa7164_get_ctrl(struct saa7164_port *port,
        case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
                ctrl->value = params->bitrate_mode;
                break;
+       case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+               ctrl->value = params->refdist;
+               break;
        default:
                return -EINVAL;
        }
@@ -447,6 +451,11 @@ static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
                        (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR))
                        ret = 0;
                break;
+       case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+               if ((ctrl->value >= 1) &&
+                       (ctrl->value <= 3))
+                       ret = 0;
+               break;
        default:
                ret = -EINVAL;
        }
@@ -509,6 +518,9 @@ static int saa7164_set_ctrl(struct saa7164_port *port,
        case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
                params->bitrate_mode = ctrl->value;
                break;
+       case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+               params->refdist = ctrl->value;
+               break;
        default:
                return -EINVAL;
        }
@@ -683,6 +695,9 @@ static int fill_queryctrl(struct saa7164_encoder_params *params,
                return v4l2_ctrl_query_fill(c,
                        V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
                        1, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
+       case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+               return v4l2_ctrl_query_fill(c,
+                       1, 3, 1, 1);
        default:
                return -EINVAL;
        }
@@ -1307,6 +1322,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
        port->encoder_params.stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_PS;
        port->encoder_params.ctl_mute = 0;
        port->encoder_params.ctl_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3;
+       port->encoder_params.refdist = 1;
 
        if (port->encodernorm.id & V4L2_STD_525_60)
                port->height = 480;

diff --git a/drivers/media/video/saa7164/saa7164.h b/drivers/media/video/saa7164/saa7164.h
index 712f762..1d9c4e3 100644 (file)
--- a/drivers/media/video/saa7164/saa7164.h
+++ b/drivers/media/video/saa7164/saa7164.h
@@ -261,6 +261,7 @@ struct saa7164_encoder_params {
        u32 audio_sampling_freq;
        u32 ctl_mute;
        u32 ctl_aspect;
+       u32 refdist;
 };
 
 struct saa7164_port;