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lavc/vaapi_encode: Enable block level bitrate control 

Signed-off-by: Fei Wang <fei.w.wang@intel.com>
This commit is contained in:
Fei Wang 2024-03-08 16:45:29 +08:00 committed by Haihao Xiang
parent 74a8e080d0
commit a8d9fab06b
3 changed files with 24 additions and 2 deletions
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4
doc/encoders.texi
View File

@ -4089,6 +4089,10 @@ Quality-defined variable-bitrate.
Average variable bitrate.
@end table
@item blbrc
Enable block level rate control, which assigns different bitrate block by block.
Invalid for CQP mode.
@end table
Each encoder also has its own specific options:

13
libavcodec/vaapi_encode.c
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@ -1805,6 +1805,11 @@ static av_cold int vaapi_encode_init_rate_control(AVCodecContext *avctx)
int i, first = 1, res;
supported_va_rc_modes = rc_attr.value;
if (ctx->blbrc && !(supported_va_rc_modes & VA_RC_MB)) {
ctx->blbrc = 0;
av_log(avctx, AV_LOG_WARNING, "Driver does not support BLBRC.\n");
}
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_encode_rc_modes); i++) {
rc_mode = &vaapi_encode_rc_modes[i];
if (supported_va_rc_modes & rc_mode->va_mode) {
@ -2016,13 +2021,18 @@ rc_mode_found:
ctx->va_bit_rate = rc_bits_per_second;
av_log(avctx, AV_LOG_VERBOSE, "RC mode: %s.\n", rc_mode->name);
if (ctx->blbrc && ctx->va_rc_mode == VA_RC_CQP)
ctx->blbrc = 0;
av_log(avctx, AV_LOG_VERBOSE, "Block Level bitrate control: %s.\n", ctx->blbrc ? "ON" : "OFF");
if (rc_attr.value == VA_ATTRIB_NOT_SUPPORTED) {
// This driver does not want the RC mode attribute to be set.
} else {
ctx->config_attributes[ctx->nb_config_attributes++] =
(VAConfigAttrib) {
.type = VAConfigAttribRateControl,
.value = ctx->va_rc_mode,
.value = ctx->blbrc ? ctx->va_rc_mode | VA_RC_MB : ctx->va_rc_mode,
};
}
@ -2051,6 +2061,7 @@ rc_mode_found:
#if VA_CHECK_VERSION(1, 1, 0)
.ICQ_quality_factor = av_clip(rc_quality, 1, 51),
.max_qp = (avctx->qmax > 0 ? avctx->qmax : 0),
.rc_flags.bits.mb_rate_control = ctx->blbrc ? 1 : 2,
#endif
#if VA_CHECK_VERSION(1, 3, 0)
.quality_factor = rc_quality,

9
libavcodec/vaapi_encode.h
View File

@ -216,6 +216,9 @@ typedef struct VAAPIEncodeContext {
// available modes).
int explicit_rc_mode;
// Block Level based bitrate control.
int blbrc;
// Explicitly-set QP, for use with the "qp" options.
// (Forces CQP mode when set, overriding everything else.)
int explicit_qp;
@ -538,7 +541,11 @@ int ff_vaapi_encode_close(AVCodecContext *avctx);
VAAPI_ENCODE_RC_MODE(VBR, "Variable-bitrate"), \
VAAPI_ENCODE_RC_MODE(ICQ, "Intelligent constant-quality"), \
VAAPI_ENCODE_RC_MODE(QVBR, "Quality-defined variable-bitrate"), \
VAAPI_ENCODE_RC_MODE(AVBR, "Average variable-bitrate")
VAAPI_ENCODE_RC_MODE(AVBR, "Average variable-bitrate"), \
{ "blbrc", \
"Block level based bitrate control",\
OFFSET(common.blbrc), AV_OPT_TYPE_BOOL, \
{ .i64 = 0 }, 0, 1, FLAGS }
#endif /* AVCODEC_VAAPI_ENCODE_H */