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33 lines
1.3 KiB
Diff
33 lines
1.3 KiB
Diff
From 39956d31d19658af7a0759e05366d4bc1c04a50a Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Fri, 15 May 2020 13:47:13 +0100
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Subject: [PATCH] staging:vc04_services: bcm2835-codec: Avoid
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fragmenting buffers
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The firmware by default is quite happy to fragment encoded
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frames as the original MMAL and IL APIs support this.
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V4L2 doesn't, so we need to enable the firmware option to avoid this.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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.../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 8 ++++++++
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1 file changed, 8 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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@@ -1972,6 +1972,14 @@ static int bcm2835_codec_create_componen
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&ctx->component->control,
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MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
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¶m, sizeof(param));
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+ /*
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+ * Avoid fragmenting the buffers over multiple frames (unless
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+ * the frame is bigger than the whole buffer)
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+ */
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+ vchiq_mmal_port_parameter_set(ctx->dev->instance,
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+ &ctx->component->control,
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+ MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
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+ ¶m, sizeof(param));
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} else {
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if (ctx->q_data[V4L2_M2M_DST].sizeimage <
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ctx->component->output[0].minimum_buffer.size)
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