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configure quant_min and quant_max

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This commit is contained in:
Maxim Devaev
2021-11-17 06:01:48 +03:00
parent ea313d3517
commit bb1dcc005c
1 changed files with 22 additions and 10 deletions
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32
src/ustreamer/h264/encoder.c
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@@ -35,7 +35,7 @@ static int _h264_encoder_compress_raw(
h264_encoder_s *h264_encoder_init(const char *path, unsigned bitrate, unsigned gop, unsigned fps) {
LOG_INFO("H264: Initializing encoder ...");
LOG_INFO("H264: Initializing V4L2 encoder ...");
LOG_INFO("H264: Using bitrate: %u Kbps", bitrate);
LOG_INFO("H264: Using GOP: %u", gop);
@@ -86,19 +86,31 @@ int h264_encoder_prepare(h264_encoder_s *enc, const frame_s *frame, bool dma) {
}
{
# define SET_OPTION(_cid, _value) { \
# define SET_OPTION(_required, _key, _value) { \
struct v4l2_control _ctl = {0}; \
_ctl.id = _cid; \
_ctl.id = V4L2_CID_MPEG_VIDEO_##_key; \
_ctl.value = _value; \
LOG_DEBUG("H264: Configuring option %s ...", #_cid); \
ENCODER_XIOCTL(VIDIOC_S_CTRL, &_ctl, "H264: Can't set option " #_cid); \
LOG_DEBUG("H264: Configuring option %s ...", #_key); \
if (_required) { \
ENCODER_XIOCTL(VIDIOC_S_CTRL, &_ctl, "H264: Can't set option " #_key); \
} else { \
if (xioctl(enc->fd, VIDIOC_S_CTRL, &_ctl) < 0) { \
if (errno == EINVAL) { \
LOG_ERROR("H264: Can't set option " #_key ": Unsupported by encoder"); \
} else { \
LOG_PERROR("H264: Can't set option " #_key); \
} \
} \
} \
}
SET_OPTION(V4L2_CID_MPEG_VIDEO_BITRATE, enc->bitrate * 1000);
SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_I_PERIOD, enc->gop);
SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_PROFILE, V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_LEVEL, V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
SET_OPTION(V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER, 1);
SET_OPTION(true, BITRATE, enc->bitrate * 1000);
SET_OPTION(true, H264_I_PERIOD, enc->gop);
SET_OPTION(true, H264_PROFILE, V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
SET_OPTION(true, H264_LEVEL, V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
SET_OPTION(true, REPEAT_SEQ_HEADER, 1);
SET_OPTION(false, H264_MIN_QP, 16);
SET_OPTION(false, H264_MAX_QP, 32);
# undef SET_OPTION
}