TheLanc3/rustdesk
1
0
Fork 0
mirror of https://github.com/rustdesk/rustdesk.git synced 2026-03-23 05:00:59 +03:00
Code Issues Packages Projects Releases Wiki Activity

videotoolbox/mediacodec support changing bitrate dynamically (#10117)

Browse Source 
Signed-off-by: 21pages <sunboeasy@gmail.com>
This commit is contained in:
21pages
2024-11-30 11:44:51 +08:00
committed by GitHub
parent e0ed6ee986
commit d60b5a6ca0
7 changed files with 352 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
res/vcpkg/ffmpeg/patch/0004-videotoolbox-changing-bitrate.patch Normal file
View File

@@ -0,0 +1,84 @@
From 7f12898fe8fd12c1042c98b34825ab2eda89e54d Mon Sep 17 00:00:00 2001
From: 21pages <sunboeasy@gmail.com>
Date: Sun, 24 Nov 2024 12:58:39 +0800
Subject: [PATCH 1/2] videotoolbox changing bitrate
Signed-off-by: 21pages <sunboeasy@gmail.com>
---
libavcodec/videotoolboxenc.c | 39 ++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index 5ea9afee22..89c927cdcc 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -278,6 +278,8 @@ typedef struct VTEncContext {
int max_slice_bytes;
int power_efficient;
int max_ref_frames;
+
+ int last_bit_rate;
} VTEncContext;
static int vt_dump_encoder(AVCodecContext *avctx)
@@ -1174,6 +1176,7 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
int64_t one_second_value = 0;
void *nums[2];
+ vtctx->last_bit_rate = bit_rate;
int status = VTCompressionSessionCreate(kCFAllocatorDefault,
avctx->width,
avctx->height,
@@ -2618,6 +2621,41 @@ static int vtenc_send_frame(AVCodecContext *avctx,
return 0;
}
+static void update_config(AVCodecContext *avctx)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+
+ if (avctx->codec_id != AV_CODEC_ID_PRORES) {
+ if (avctx->bit_rate != vtctx->last_bit_rate) {
+ av_log(avctx, AV_LOG_INFO, "Setting bit rate to %d\n", avctx->bit_rate);
+ vtctx->last_bit_rate = avctx->bit_rate;
+ SInt32 bit_rate = avctx->bit_rate;
+ CFNumberRef bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &bit_rate);
+ if (!bit_rate_num) return;
+
+ if (vtctx->constant_bit_rate) {
+ int status = VTSessionSetProperty(vtctx->session,
+ compat_keys.kVTCompressionPropertyKey_ConstantBitRate,
+ bit_rate_num);
+ if (status == kVTPropertyNotSupportedErr) {
+ av_log(avctx, AV_LOG_ERROR, "Error: -constant_bit_rate true is not supported by the encoder.\n");
+ }
+ } else {
+ int status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_AverageBitRate,
+ bit_rate_num);
+ if (!status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: cannot set average bit rate: %d\n", status);
+ }
+ }
+
+ CFRelease(bit_rate_num);
+ }
+ }
+}
+
static av_cold int vtenc_frame(
AVCodecContext *avctx,
AVPacket *pkt,
@@ -2630,6 +2668,7 @@ static av_cold int vtenc_frame(
CMSampleBufferRef buf = NULL;
ExtraSEI *sei = NULL;
+ update_config(avctx);
if (frame) {
status = vtenc_send_frame(avctx, vtctx, frame);
--
2.43.0.windows.1