83 lines
2.7 KiB
Diff
83 lines
2.7 KiB
Diff
From 5a1f76940af2691627837bb4f181a672abfaffa2 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Tue, 2 Feb 2021 15:50:18 +0000
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Subject: [PATCH] staging/bcm2835-codec: Add support for pixel aspect
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ratio
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If the format is detected by the driver and a V4L2_EVENT_SOURCE_CHANGE
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event is generated, then pass on the pixel aspect ratio as well.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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.../bcm2835-codec/bcm2835-v4l2-codec.c | 31 +++++++++++++++++++
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1 file changed, 31 insertions(+)
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--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
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+++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
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@@ -602,6 +602,7 @@ struct bcm2835_codec_q_data {
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unsigned int crop_width;
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unsigned int crop_height;
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bool selection_set;
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+ struct v4l2_fract aspect_ratio;
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unsigned int sizeimage;
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unsigned int sequence;
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@@ -981,6 +982,9 @@ static void handle_fmt_changed(struct bc
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if (format->es.video.color_space)
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color_mmal2v4l(ctx, format->es.video.color_space);
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+ q_data->aspect_ratio.numerator = format->es.video.par.num;
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+ q_data->aspect_ratio.denominator = format->es.video.par.den;
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+
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queue_res_chg_event(ctx);
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}
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@@ -1657,6 +1661,29 @@ static int vidioc_g_parm(struct file *fi
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return 0;
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}
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+static int vidioc_g_pixelaspect(struct file *file, void *fh, int type,
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+ struct v4l2_fract *f)
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+{
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+ struct bcm2835_codec_ctx *ctx = file2ctx(file);
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+
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+ /*
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+ * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
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+ * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
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+ * API. The V4L2 core will have converted the MPLANE variants to
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+ * non-MPLANE.
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+ * Open code this instead of using get_q_data in this case.
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+ */
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+ if (ctx->dev->role != DECODE)
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+ return -ENOIOCTLCMD;
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+
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+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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+ return -EINVAL;
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+
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+ *f = ctx->q_data[V4L2_M2M_DST].aspect_ratio;
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+
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+ return 0;
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+}
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+
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static int vidioc_subscribe_evt(struct v4l2_fh *fh,
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const struct v4l2_event_subscription *sub)
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{
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@@ -2082,6 +2109,8 @@ static const struct v4l2_ioctl_ops bcm28
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.vidioc_g_parm = vidioc_g_parm,
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.vidioc_s_parm = vidioc_s_parm,
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+ .vidioc_g_pixelaspect = vidioc_g_pixelaspect,
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+
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.vidioc_subscribe_event = vidioc_subscribe_evt,
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
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@@ -2640,6 +2669,8 @@ static int bcm2835_codec_open(struct fil
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ctx->q_data[V4L2_M2M_DST].crop_width,
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ctx->q_data[V4L2_M2M_DST].height,
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ctx->q_data[V4L2_M2M_DST].fmt);
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+ ctx->q_data[V4L2_M2M_DST].aspect_ratio.numerator = 1;
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+ ctx->q_data[V4L2_M2M_DST].aspect_ratio.denominator = 1;
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ctx->colorspace = V4L2_COLORSPACE_REC709;
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ctx->bitrate = 10 * 1000 * 1000;
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