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Code Issues Releases Activity

avcodec/videotoolboxenc: add rc_max_bitrate control into videotoolbox

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add kVTCompressionPropertyKey_DataRateLimits support by rc_max_bitrate

Reviewed-by: Rick Kern <kernrj@gmail.com>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
This commit is contained in:
Steven Liu 2017-03-14 22:53:43 +08:00 committed by Rick Kern
parent a283665693
commit 0052f3f527
1 changed files with 47 additions and 0 deletions
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47
libavcodec/videotoolboxenc.c
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@ -898,7 +898,14 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
{ {
VTEncContext *vtctx = avctx->priv_data; VTEncContext *vtctx = avctx->priv_data;
SInt32 bit_rate = avctx->bit_rate; SInt32 bit_rate = avctx->bit_rate;
SInt32 max_rate = avctx->rc_max_rate;
CFNumberRef bit_rate_num; CFNumberRef bit_rate_num;
CFNumberRef bytes_per_second;
CFNumberRef one_second;
CFArrayRef data_rate_limits;
int64_t bytes_per_second_value = 0;
int64_t one_second_value = 0;
void *nums[2];
int status = VTCompressionSessionCreate(kCFAllocatorDefault, int status = VTCompressionSessionCreate(kCFAllocatorDefault,
avctx->width, avctx->width,
@ -938,6 +945,46 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
return AVERROR_EXTERNAL; return AVERROR_EXTERNAL;
} }
bytes_per_second_value = max_rate >> 3;
bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
kCFNumberSInt64Type,
&bytes_per_second_value);
if (!bytes_per_second) {
return AVERROR(ENOMEM);
}
one_second_value = 1;
one_second = CFNumberCreate(kCFAllocatorDefault,
kCFNumberSInt64Type,
&one_second_value);
if (!one_second) {
CFRelease(bytes_per_second);
return AVERROR(ENOMEM);
}
nums[0] = bytes_per_second;
nums[1] = one_second;
data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
nums,
2,
&kCFTypeArrayCallBacks);
if (!data_rate_limits) {
CFRelease(bytes_per_second);
CFRelease(one_second);
return AVERROR(ENOMEM);
}
status = VTSessionSetProperty(vtctx->session,
kVTCompressionPropertyKey_DataRateLimits,
data_rate_limits);
CFRelease(bytes_per_second);
CFRelease(one_second);
CFRelease(data_rate_limits);
if (status) {
av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
return AVERROR_EXTERNAL;
}
if (profile_level) { if (profile_level) {
status = VTSessionSetProperty(vtctx->session, status = VTSessionSetProperty(vtctx->session,
kVTCompressionPropertyKey_ProfileLevel, kVTCompressionPropertyKey_ProfileLevel,