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libvpxenc: add 'rc_lookahead' private option 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
James Zern 2011-09-07 19:14:33 -07:00 committed by Michael Niedermayer
parent fb99d78778
commit 3dc14b4628
1 changed files with 13 additions and 0 deletions
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13
libavcodec/libvpxenc.c
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@ -68,6 +68,8 @@ typedef struct VP8EncoderContext {
int arnr_max_frames;
int arnr_strength;
int arnr_type;
int rc_lookahead;
} VP8Context;
#define V AV_OPT_FLAG_VIDEO_PARAM
@ -85,6 +87,11 @@ static const AVOption options[]={
{"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 15, V|E},
{"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), FF_OPT_TYPE_INT, {.dbl = 3}, 0, 6, V|E},
{"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), FF_OPT_TYPE_INT, {.dbl = 3}, 1, 3, V|E},
#if FF_API_X264_GLOBAL_OPTS
{"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, rc_lookahead), FF_OPT_TYPE_INT, {.dbl = -1}, -1, 25, V|E},
#else
{"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, rc_lookahead), FF_OPT_TYPE_INT, {.dbl = 25}, 0, 25, V|E},
#endif
{NULL}
};
static const AVClass class = { "libvpx", av_default_item_name, options, LIBAVUTIL_VERSION_INT };
@ -261,7 +268,13 @@ static av_cold int vp8_init(AVCodecContext *avctx)
enccfg.g_timebase.num = avctx->time_base.num;
enccfg.g_timebase.den = avctx->time_base.den;
enccfg.g_threads = avctx->thread_count;
#if FF_API_X264_GLOBAL_OPTS
enccfg.g_lag_in_frames= FFMIN(avctx->rc_lookahead, 25); //0-25, avoids init failure
if (ctx->rc_lookahead >= 0)
enccfg.g_lag_in_frames= ctx->rc_lookahead;
#else
enccfg.g_lag_in_frames= ctx->rc_lookahead;
#endif
if (avctx->flags & CODEC_FLAG_PASS1)
enccfg.g_pass = VPX_RC_FIRST_PASS;