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avcodec/nvenc: add fractional CQ support 

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
This commit is contained in:
Ben Chang 2017-05-10 12:11:17 +05:30 committed by Timo Rothenpieler
parent 984e2218f2
commit 18a659d1b6
4 changed files with 9 additions and 4 deletions
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7
libavcodec/nvenc.c
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@ -796,7 +796,12 @@ static av_cold void nvenc_setup_rate_control(AVCodecContext *avctx)
ctx->encode_config.rcParams.zeroReorderDelay = 1;
if (ctx->quality)
ctx->encode_config.rcParams.targetQuality = ctx->quality;
{
//convert from float to fixed point 8.8
int tmp_quality = (int)(ctx->quality * 256.0f);
ctx->encode_config.rcParams.targetQuality = (uint8_t)(tmp_quality >> 8);
ctx->encode_config.rcParams.targetQualityLSB = (uint8_t)(tmp_quality & 0xff);
}
}
static av_cold int nvenc_setup_h264_config(AVCodecContext *avctx)

2
libavcodec/nvenc.h
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@ -154,7 +154,7 @@ typedef struct NvencContext
int nonref_p;
int strict_gop;
int aq_strength;
int quality;
float quality;
int aud;
int bluray_compat;
int init_qp_p;

2
libavcodec/nvenc_h264.c
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@ -109,7 +109,7 @@ static const AVOption options[] = {
{ "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)",
OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
{ "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control",
OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
OFFSET(quality), AV_OPT_TYPE_FLOAT, { .dbl = 0.}, 0., 51., VE },
{ "aud", "Use access unit delimiters", OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "bluray-compat", "Bluray compatibility workarounds", OFFSET(bluray_compat),AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "init_qpP", "Initial QP value for P frame", OFFSET(init_qp_p), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },

2
libavcodec/nvenc_hevc.c
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@ -106,7 +106,7 @@ static const AVOption options[] = {
{ "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)",
OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
{ "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control",
OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
OFFSET(quality), AV_OPT_TYPE_FLOAT, { .dbl = 0.}, 0., 51., VE },
{ "aud", "Use access unit delimiters", OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "bluray-compat", "Bluray compatibility workarounds", OFFSET(bluray_compat),AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "init_qpP", "Initial QP value for P frame", OFFSET(init_qp_p), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },