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[FFmpeg-devel] avcodec/amfenc: Fix HEVC/AV1 colorspace assumptions

Message ID 20240908200351.196-1-aicommander@gmail.com
State New
Headers show
Series [FFmpeg-devel] avcodec/amfenc: Fix HEVC/AV1 colorspace assumptions | expand

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Commit Message

Cameron Gutman Sept. 8, 2024, 8:02 p.m. UTC
Fixes incorrect colors in AMF encoding of 10-bit SDR content in HEVC and AV1.

Signed-off-by: Cameron Gutman <aicommander@gmail.com>
---
 libavcodec/amfenc_av1.c  | 13 ++++---------
 libavcodec/amfenc_hevc.c | 13 ++++---------
 2 files changed, 8 insertions(+), 18 deletions(-)

Comments

Araz Sept. 9, 2024, 2:26 p.m. UTC | #1
> -    if (color_depth == AMF_COLOR_BIT_DEPTH_8) {
> -        /// Color Transfer Characteristics (AMF matches ISO/IEC)
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC,
AMF_COLOR_TRANSFER_CHARACTERISTIC_BT709);
> -        /// Color Primaries (AMF matches ISO/IEC)
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT709);
> -    } else {
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC,
AMF_COLOR_TRANSFER_CHARACTERISTIC_SMPTE2084);
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT2020);
> -    }
> +    /// Color Transfer Characteristics (AMF matches ISO/IEC)
> +    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC,
(amf_int64)avctx->color_trc);
> +    /// Color Primaries (AMF matches ISO/IEC)
> +    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES,
(amf_int64)avctx->color_primaries);

> -    if (color_depth == AMF_COLOR_BIT_DEPTH_8) {
> -        /// Color Transfer Characteristics (AMF matches ISO/IEC)
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC,
AMF_COLOR_TRANSFER_CHARACTERISTIC_BT709);
> -        /// Color Primaries (AMF matches ISO/IEC)
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT709);
> -    } else {
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC,
AMF_COLOR_TRANSFER_CHARACTERISTIC_SMPTE2084);
> -        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT2020);
> -    }
> +    /// Color Transfer Characteristics (AMF matches ISO/IEC)
> +    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC,
(amf_int64)avctx->color_trc);
> +    /// Color Primaries (AMF matches ISO/IEC)
> +    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder,
AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES,
(amf_int64)avctx->color_primaries);

Current hardware color space converter does not support transfer
characteristics other than this:
(BT709 for 8-bit output and BT2084 for 10-bit output) so for RGB input
we need them hard-coded. If conversion is done before AMF encoder, the
encoder can accept any value as it is just fields in VUI header.
So, we will come with a separate patch which would reflect this logic.
I also answered the same on your comment to my patch:
avcodec/amfenc: Fixes the color information in the output.
diff mbox series

Patch

diff --git a/libavcodec/amfenc_av1.c b/libavcodec/amfenc_av1.c
index b40d54f70c..59b097edef 100644
--- a/libavcodec/amfenc_av1.c
+++ b/libavcodec/amfenc_av1.c
@@ -252,15 +252,10 @@  FF_ENABLE_DEPRECATION_WARNINGS
 
     AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_COLOR_BIT_DEPTH, color_depth);
     AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PROFILE, color_profile);
-    if (color_depth == AMF_COLOR_BIT_DEPTH_8) {
-        /// Color Transfer Characteristics (AMF matches ISO/IEC)
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC, AMF_COLOR_TRANSFER_CHARACTERISTIC_BT709);
-        /// Color Primaries (AMF matches ISO/IEC)
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT709);
-    } else {
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC, AMF_COLOR_TRANSFER_CHARACTERISTIC_SMPTE2084);
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT2020);
-    }
+    /// Color Transfer Characteristics (AMF matches ISO/IEC)
+    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_TRANSFER_CHARACTERISTIC, (amf_int64)avctx->color_trc);
+    /// Color Primaries (AMF matches ISO/IEC)
+    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_OUTPUT_COLOR_PRIMARIES, (amf_int64)avctx->color_primaries);
 
     profile_level = avctx->level;
     if (profile_level == AV_LEVEL_UNKNOWN) {
diff --git a/libavcodec/amfenc_hevc.c b/libavcodec/amfenc_hevc.c
index fc25dcec1a..bdd2f273a9 100644
--- a/libavcodec/amfenc_hevc.c
+++ b/libavcodec/amfenc_hevc.c
@@ -254,15 +254,10 @@  FF_ENABLE_DEPRECATION_WARNINGS
         color_depth = AMF_COLOR_BIT_DEPTH_10;
     }
     AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_COLOR_BIT_DEPTH, color_depth);
-    if (color_depth == AMF_COLOR_BIT_DEPTH_8) {
-        /// Color Transfer Characteristics (AMF matches ISO/IEC)
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC, AMF_COLOR_TRANSFER_CHARACTERISTIC_BT709);
-        /// Color Primaries (AMF matches ISO/IEC)
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT709);
-    } else {
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC, AMF_COLOR_TRANSFER_CHARACTERISTIC_SMPTE2084);
-        AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES, AMF_COLOR_PRIMARIES_BT2020);
-    }
+    /// Color Transfer Characteristics (AMF matches ISO/IEC)
+    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_TRANSFER_CHARACTERISTIC, (amf_int64)avctx->color_trc);
+    /// Color Primaries (AMF matches ISO/IEC)
+    AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_OUTPUT_COLOR_PRIMARIES, (amf_int64)avctx->color_primaries);
 
     // Picture control properties
     AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_NUM_GOPS_PER_IDR, ctx->gops_per_idr);