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libs: encoder: bitrate target percentage calculation

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If the rate control is set to Constant Bit Rate (CBR) the target
percentage is 100%, otherwise is 70%
This commit is contained in:
Víctor Manuel Jáquez Leal 2017-06-07 12:32:53 +02:00
parent 4b5ecca29c
commit f8afb1eea4
1 changed files with 6 additions and 2 deletions
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8
gst-libs/gst/vaapi/gstvaapiencoder.c
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@ -802,7 +802,7 @@ gst_vaapi_encoder_reconfigure_internal (GstVaapiEncoder * encoder)
GstVideoInfo *const vip = GST_VAAPI_ENCODER_VIDEO_INFO (encoder); GstVideoInfo *const vip = GST_VAAPI_ENCODER_VIDEO_INFO (encoder);
GstVaapiEncoderStatus status; GstVaapiEncoderStatus status;
GstVaapiVideoPool *pool; GstVaapiVideoPool *pool;
guint codedbuf_size, quality_level_max = 0; guint codedbuf_size, target_percentage, quality_level_max = 0;
/* Generate a keyframe every second */ /* Generate a keyframe every second */
if (!encoder->keyframe_period) if (!encoder->keyframe_period)
@ -812,11 +812,15 @@ gst_vaapi_encoder_reconfigure_internal (GstVaapiEncoder * encoder)
GST_VAAPI_ENCODER_VA_FRAME_RATE (encoder).framerate = GST_VAAPI_ENCODER_VA_FRAME_RATE (encoder).framerate =
(guint) GST_VIDEO_INFO_FPS_D (vip) << 16 | GST_VIDEO_INFO_FPS_N (vip); (guint) GST_VIDEO_INFO_FPS_D (vip) << 16 | GST_VIDEO_INFO_FPS_N (vip);
target_percentage =
(GST_VAAPI_ENCODER_RATE_CONTROL (encoder) == GST_VAAPI_RATECONTROL_CBR) ?
100 : 70;
/* *INDENT-OFF* */ /* *INDENT-OFF* */
/* Default values for rate control parameter */ /* Default values for rate control parameter */
GST_VAAPI_ENCODER_VA_RATE_CONTROL (encoder) = (VAEncMiscParameterRateControl) { GST_VAAPI_ENCODER_VA_RATE_CONTROL (encoder) = (VAEncMiscParameterRateControl) {
.bits_per_second = encoder->bitrate * 1000, .bits_per_second = encoder->bitrate * 1000,
.target_percentage = 70, .target_percentage = target_percentage,
.window_size = 500, .window_size = 500,
}; };
/* *INDENT-ON* */ /* *INDENT-ON* */