diff options
| author | Linjie Fu <linjie.fu@intel.com> | 2020-04-29 11:00:48 +0800 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2020-04-29 20:58:17 +0300 |
| commit | 75fc3f97b0073d0ff57b4bd1e5ce8b36a5f9ac14 (patch) | |
| tree | 916e24e8e5109d1993450faabb3a9d30d6184314 /libavcodec | |
| parent | e5f097eca78342bf34a70f4c43c61238c8ae41c2 (diff) | |
lavc/libopenh264enc: add bit rate control select support
RC_BITRATE_MODE:
set BITS_EXCEEDED to iCurrentBitsLevel and allows QP adjust
in RcCalculatePictureQp().
RC_BUFFERBASED_MODE:
use buffer status to adjust the video quality.
RC_TIMESTAMP_MODE:
bit rate control based on timestamp, introduced in release 1.4.
Default to use RC_QUALITY_MODE.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/libopenh264enc.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c index 245752d71e..dc3bd536a8 100644 --- a/libavcodec/libopenh264enc.c +++ b/libavcodec/libopenh264enc.c @@ -49,6 +49,9 @@ typedef struct SVCContext { int skip_frames; int skipped; int cabac; + + // rate control mode + int rc_mode; } SVCContext; #define OFFSET(x) offsetof(SVCContext, x) @@ -73,6 +76,16 @@ static const AVOption options[] = { { "max_nal_size", "set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, { "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, { "cabac", "Enable cabac", OFFSET(cabac), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, + + { "rc_mode", "Select rate control mode", OFFSET(rc_mode), AV_OPT_TYPE_INT, { .i64 = RC_QUALITY_MODE }, RC_OFF_MODE, RC_TIMESTAMP_MODE, VE, "rc_mode" }, + { "off", "bit rate control off", 0, AV_OPT_TYPE_CONST, { .i64 = RC_OFF_MODE }, 0, 0, VE, "rc_mode" }, + { "quality", "quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_QUALITY_MODE }, 0, 0, VE, "rc_mode" }, + { "bitrate", "bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BITRATE_MODE }, 0, 0, VE, "rc_mode" }, + { "buffer", "using buffer status to adjust the video quality (no bitrate control)", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BUFFERBASED_MODE }, 0, 0, VE, "rc_mode" }, +#if OPENH264_VER_AT_LEAST(1, 4) + { "timestamp", "bit rate control based on timestamp", 0, AV_OPT_TYPE_CONST, { .i64 = RC_TIMESTAMP_MODE }, 0, 0, VE, "rc_mode" }, +#endif + { NULL } }; @@ -136,7 +149,7 @@ FF_ENABLE_DEPRECATION_WARNINGS param.iPicHeight = avctx->height; param.iTargetBitrate = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT; param.iMaxBitrate = FFMAX(avctx->rc_max_rate, avctx->bit_rate); - param.iRCMode = RC_QUALITY_MODE; + param.iRCMode = s->rc_mode; if (avctx->qmax >= 0) param.iMaxQp = av_clip(avctx->qmax, 1, 51); if (avctx->qmin >= 0) |