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st/va: enable vbr rate control for vaapi encode

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This patch enables variable bit-rate for vaapi encoding. According to va.h,
target bit-rate equals to maximum bit-rate multiplies by target_percentage.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Boyuan Zhang
2016-09-06 16:39:45 -04:00
committed by Leo Liu
parent 6a7f79af9b
commit e5009b7c26
2 changed files with 2 additions and 2 deletions
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src/gallium/state_trackers/va/config.c
+1 -1
View File
@@ -120,7 +120,7 @@ vlVaGetConfigAttributes(VADriverContextP ctx, VAProfile profile, VAEntrypoint en
value = VA_RT_FORMAT_YUV420;
break;
case VAConfigAttribRateControl:
value = VA_RC_CQP | VA_RC_CBR;
value = VA_RC_CQP | VA_RC_CBR | VA_RC_VBR;
break;
default:
value = VA_ATTRIB_NOT_SUPPORTED;
src/gallium/state_trackers/va/picture.c
+1 -1
View File
@@ -322,7 +322,7 @@ handleVAEncMiscParameterTypeRateControl(vlVaContext *context, VAEncMiscParameter
PIPE_H264_ENC_RATE_CONTROL_METHOD_CONSTANT)
context->desc.h264enc.rate_ctrl.target_bitrate = rc->bits_per_second;
else
context->desc.h264enc.rate_ctrl.target_bitrate = rc->bits_per_second * rc->target_percentage;
context->desc.h264enc.rate_ctrl.target_bitrate = rc->bits_per_second * rc->target_percentage / 100;
context->desc.h264enc.rate_ctrl.peak_bitrate = rc->bits_per_second;
if (context->desc.h264enc.rate_ctrl.target_bitrate < 2000000)
context->desc.h264enc.rate_ctrl.vbv_buffer_size = MIN2((context->desc.h264enc.rate_ctrl.target_bitrate * 2.75), 2000000);