From 9d508e4914d6e9aafc8ae7ab0ff965a291ee42a8 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Mon, 22 Aug 2011 07:55:34 +0200
Subject: [PATCH] libx264: add 'cqp' private option.

Deprecate corresponding global option.
---
 libavcodec/avcodec.h |  5 +++--
 libavcodec/libx264.c | 12 +++++++++---
 libavcodec/options.c |  2 +-
 3 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 350708d..bff4b8f 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2385,14 +2385,15 @@ typedef struct AVCodecContext {
      *   @deprecated use 'crf' libx264 private option
      */
     attribute_deprecated float crf;
-#endif
 
     /**
      * constant quantization parameter rate control method
      * - encoding: Set by user.
      * - decoding: unused
+     *   @deprecated use 'cqp' libx264 private option
      */
-    int cqp;
+    attribute_deprecated int cqp;
+#endif
 
     /**
      * minimum GOP size
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index bd7955a..cafca18 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -42,6 +42,7 @@ typedef struct X264Context {
     char *profile;
     int fastfirstpass;
     float crf;
+    int cqp;
 } X264Context;
 
 static void X264_log(void *p, int level, const char *fmt, va_list args)
@@ -281,16 +282,18 @@ static av_cold int X264_init(AVCodecContext *avctx)
             x4->params.rc.i_rc_method   = X264_RC_CRF;
             x4->params.rc.f_rf_constant = avctx->crf;
             x4->params.rc.f_rf_constant_max = avctx->crf_max;
-        } else
-#endif
-               if (avctx->cqp > -1) {
+        } else if (avctx->cqp > -1) {
             x4->params.rc.i_rc_method   = X264_RC_CQP;
             x4->params.rc.i_qp_constant = avctx->cqp;
         }
+#endif
 
         if (x4->crf >= 0) {
             x4->params.rc.i_rc_method   = X264_RC_CRF;
             x4->params.rc.f_rf_constant = x4->crf;
+        } else if (x4->cqp >= 0) {
+            x4->params.rc.i_rc_method   = X264_RC_CQP;
+            x4->params.rc.i_qp_constant = x4->cqp;
         }
     }
 
@@ -343,7 +346,9 @@ static av_cold int X264_init(AVCodecContext *avctx)
     avctx->has_b_frames = x4->params.i_bframe ?
         x4->params.i_bframe_pyramid ? 2 : 1 : 0;
     avctx->bit_rate = x4->params.rc.i_bitrate*1000;
+#if FF_API_X264_GLOBAL_OPTS
     avctx->crf = x4->params.rc.f_rf_constant;
+#endif
 
     x4->enc = x264_encoder_open(&x4->params);
     if (!x4->enc)
@@ -376,6 +381,7 @@ static const AVOption options[] = {
     { "profile",       "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile),       FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), FF_OPT_TYPE_INT,    { 1 }, 0, 1, VE},
     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           FF_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE },
+    { "cqp",           "Constant quantization parameter rate control method",OFFSET(cqp),        FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },
     { NULL },
 };
 
diff --git a/libavcodec/options.c b/libavcodec/options.c
index 3cef24c..38ac986 100644
--- a/libavcodec/options.c
+++ b/libavcodec/options.c
@@ -377,8 +377,8 @@ static const AVOption options[]={
 {"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, 10, V|E},
 #if FF_API_X264_GLOBAL_OPTS
 {"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 51, V|E},
-#endif
 {"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, V|E},
+#endif
 {"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, {.dbl = 25 }, INT_MIN, INT_MAX, V|E},
 {"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, {.dbl = 1 }, INT_MIN, INT_MAX, V|E},
 {"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},
-- 
2.7.4