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avcodec/v4l2m2m: allow lower minimum buffer values 

There is no reason to enforce a high minimum. In the context
of streaming only a few output buffers and capture buffers
are even needed for continuous playback. This also helps
alleviate memory pressure when decoding 4K media.

Signed-off-by: Aman Karmani <aman@tmm1.net>
This commit is contained in:
Lukas Rusak 2020-05-07 09:18:34 -07:00 committed by Aman Karmani
parent 18d9959fd9
commit 0d7c452d84
2 changed files with 2 additions and 2 deletions
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2
libavcodec/v4l2_m2m.h
View File

@ -38,7 +38,7 @@
#define V4L_M2M_DEFAULT_OPTS \
{ "num_output_buffers", "Number of buffers in the output context",\
OFFSET(num_output_buffers), AV_OPT_TYPE_INT, { .i64 = 16 }, 6, INT_MAX, FLAGS }
OFFSET(num_output_buffers), AV_OPT_TYPE_INT, { .i64 = 16 }, 2, INT_MAX, FLAGS }
typedef struct V4L2m2mContext {
char devname[PATH_MAX];

2
libavcodec/v4l2_m2m_dec.c
View File

@ -226,7 +226,7 @@ static av_cold int v4l2_decode_close(AVCodecContext *avctx)
static const AVOption options[] = {
V4L_M2M_DEFAULT_OPTS,
{ "num_capture_buffers", "Number of buffers in the capture context",
OFFSET(num_capture_buffers), AV_OPT_TYPE_INT, {.i64 = 20}, 20, INT_MAX, FLAGS },
OFFSET(num_capture_buffers), AV_OPT_TYPE_INT, {.i64 = 20}, 2, INT_MAX, FLAGS },
{ NULL},
};