[FFmpeg-devel] [PATCH]lavc/libx264: Support monochrome encoding

[Carl Eugen Hoyos]

Hi!

Attached patch allows monochrome encoding with libx264, supported in
master since a few hours.

Please comment, Carl Eugen

From a26245de63bdc9afc6b21ea6e97b95a2a7e1e765 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceffm...@gmail.com>
Date: Tue, 7 Aug 2018 20:23:06 +0200
Subject: [PATCH] lavc/libx264: Support monochrome encoding.

---
 libavcodec/libx264.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 12379ff..cc9e5c8 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -443,6 +443,10 @@ static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
 #ifdef X264_CSP_NV21
     case AV_PIX_FMT_NV21:      return X264_CSP_NV21;
 #endif
+#ifdef X264_CSP_I400
+    case AV_PIX_FMT_GRAY8:
+    case AV_PIX_FMT_GRAY10:    return X264_CSP_I400;
+#endif
     };
     return 0;
 }
@@ -855,6 +859,9 @@ static const enum AVPixelFormat pix_fmts_8bit[] = {
 #ifdef X264_CSP_NV21
     AV_PIX_FMT_NV21,
 #endif
+#ifdef X264_CSP_I400
+    AV_PIX_FMT_GRAY8,
+#endif
     AV_PIX_FMT_NONE
 };
 static const enum AVPixelFormat pix_fmts_9bit[] = {
@@ -867,6 +874,9 @@ static const enum AVPixelFormat pix_fmts_10bit[] = {
     AV_PIX_FMT_YUV422P10,
     AV_PIX_FMT_YUV444P10,
     AV_PIX_FMT_NV20,
+#ifdef X264_CSP_I400
+    AV_PIX_FMT_GRAY10,
+#endif
     AV_PIX_FMT_NONE
 };
 static const enum AVPixelFormat pix_fmts_all[] = {
@@ -885,6 +895,10 @@ static const enum AVPixelFormat pix_fmts_all[] = {
     AV_PIX_FMT_YUV422P10,
     AV_PIX_FMT_YUV444P10,
     AV_PIX_FMT_NV20,
+#ifdef X264_CSP_I400
+    AV_PIX_FMT_GRAY8,
+    AV_PIX_FMT_GRAY10,
+#endif
     AV_PIX_FMT_NONE
 };
 #if CONFIG_LIBX264RGB_ENCODER
-- 
1.7.10.4


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