From 2aa890201d051967ce1b5f8b8a6268e9c02a619c Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Sun, 18 Oct 2026 22:20:44 +0200
Subject: [PATCH] Package live AMF QP support with the FFmpeg build profile

---
 .../patches/ffmpeg-7.1.2-amf-live-qp.patch    | 46 ++++---------------
 1 file changed, 9 insertions(+), 37 deletions(-)

diff --git a/tools/chatgui/ffmpeg/patches/ffmpeg-7.1.2-amf-live-qp.patch b/tools/chatgui/ffmpeg/patches/ffmpeg-7.1.2-amf-live-qp.patch
index 3f8d5017..aefeaab9 100644
--- a/tools/chatgui/ffmpeg/patches/ffmpeg-7.1.2-amf-live-qp.patch
+++ b/tools/chatgui/ffmpeg/patches/ffmpeg-7.1.2-amf-live-qp.patch
@@ -1,48 +1,23 @@
 --- a/libavcodec/amfenc.h
 +++ b/libavcodec/amfenc.h
-@@ -112,6 +112,8 @@
-     int                 aud;
-     int                 max_consecutive_b_frames;
-     int                 max_b_frames;
+@@ -114,0 +115,2 @@
 +    int                 utun_qp_max;
 +    int                 utun_qp_applied;
-     int                 qvbr_quality_level;
-     int                 hw_high_motion_quality_boost;
- 
 --- a/libavcodec/amfenc_h264.c
 +++ b/libavcodec/amfenc_h264.c
-@@ -28,6 +28,7 @@
- #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
- 
- static const AVOption options[] = {
-+    { "utun_qp_max", "Live QP ceiling", OFFSET(utun_qp_max), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
-     // Static
-     /// Usage
-     { "usage",          "Encoder Usage",        OFFSET(usage),  AV_OPT_TYPE_INT,   { .i64 = -1 }, -1, AMF_VIDEO_ENCODER_USAGE_LOW_LATENCY_HIGH_QUALITY, VE, .unit = "usage" },
+@@ -30,0 +31 @@
++    { "utun_qp_max", "Live QP ceiling", OFFSET(utun_qp_max), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE | AV_OPT_FLAG_RUNTIME_PARAM },
 --- a/libavcodec/amfenc_hevc.c
 +++ b/libavcodec/amfenc_hevc.c
-@@ -27,6 +27,7 @@
- #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
- 
- static const AVOption options[] = {
-+    { "utun_qp_max", "Live QP ceiling", OFFSET(utun_qp_max), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
-     { "usage",                   "Set the encoding usage",                   OFFSET(usage),                          AV_OPT_TYPE_INT,   {.i64 = -1 }, -1, AMF_VIDEO_ENCODER_HEVC_USAGE_LOW_LATENCY_HIGH_QUALITY, VE, .unit = "usage" },
-     { "transcoding",             "Generic Transcoding",                      0, AV_OPT_TYPE_CONST, {.i64 = AMF_VIDEO_ENCODER_HEVC_USAGE_TRANSCODING               }, 0, 0, VE, .unit = "usage" },
-     { "ultralowlatency",         "Ultra low latency usecase",                0, AV_OPT_TYPE_CONST, {.i64 = AMF_VIDEO_ENCODER_HEVC_USAGE_ULTRA_LOW_LATENCY         }, 0, 0, VE, .unit = "usage" },
+@@ -29,0 +30 @@
++    { "utun_qp_max", "Live QP ceiling", OFFSET(utun_qp_max), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE | AV_OPT_FLAG_RUNTIME_PARAM },
 --- a/libavcodec/amfenc.c
 +++ b/libavcodec/amfenc.c
-@@ -274,6 +274,7 @@
-     av_unused int ret;
- 
-     ctx->hwsurfaces_in_queue = 0;
+@@ -276,0 +277,3 @@
 +    ctx->utun_qp_applied = -1;
-     ctx->hwsurfaces_in_queue_max = 16;
- 
-     // configure AMF logger
-@@ -680,6 +681,28 @@
-         }
-     } else if (!ctx->delayed_surface) { // submit frame
-         int hw_surface = 0;
++    if (avctx->codec_id != AV_CODEC_ID_H264 && avctx->codec_id != AV_CODEC_ID_HEVC)
++        ctx->utun_qp_max = -1;
+@@ -682,0 +686,22 @@
 +
 +        if (ctx->utun_qp_max >= 0 && ctx->utun_qp_max != ctx->utun_qp_applied) {
 +            const wchar_t *max_i, *max_p;
@@ -65,6 +40,3 @@
 +            ctx->utun_qp_applied = ctx->utun_qp_max;
 +            av_log(avctx, AV_LOG_INFO, "Live QP ceiling applied qp=%d\n", ctx->utun_qp_max);
 +        }
- 
-         // prepare surface from frame
-         switch (frame->format) {