Fixes compilation of Homebrew's Formula for mplayer 1.3.0

ffmpeg-fix-compilation-with-x264.patch

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 2d36c5e566..754383e080 100644
--- a/ffmpeg/libavcodec/libx264.c
+++ b/ffmpeg/libavcodec/libx264.c
@@ -272,6 +272,7 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
                       int *got_packet)
 {
     X264Context *x4 = ctx->priv_data;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ctx->pix_fmt);
     x264_nal_t *nal;
     int nnal, i, ret;
     x264_picture_t pic_out = {0};
@@ -279,7 +280,7 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
 
     x264_picture_init( &x4->pic );
     x4->pic.img.i_csp   = x4->params.i_csp;
-    if (x264_bit_depth > 8)
+    if (desc->comp[0].depth > 8)
         x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
     x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
 
@@ -724,6 +724,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
     x4->params.i_width          = avctx->width;
     x4->params.i_height         = avctx->height;
+#if X264_BUILD >= 153
+    x4->params.i_bitdepth       = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth;
+#endif
     av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
     x4->params.vui.i_sar_width  = sw;
     x4->params.vui.i_sar_height = sh;
@@ -837,6 +840,24 @@ FF_ENABLE_DEPRECATION_WARNINGS
     return 0;
 }
 
+static const enum AVPixelFormat pix_fmts[] = {
+    AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_YUVJ420P,
+    AV_PIX_FMT_YUV422P,
+    AV_PIX_FMT_YUVJ422P,
+    AV_PIX_FMT_YUV444P,
+    AV_PIX_FMT_YUVJ444P,
+    AV_PIX_FMT_YUV420P10,
+    AV_PIX_FMT_YUV422P10,
+    AV_PIX_FMT_YUV444P10,
+    AV_PIX_FMT_NV12,
+    AV_PIX_FMT_NV16,
+    AV_PIX_FMT_NV20,
+#ifdef X264_CSP_NV21
+    AV_PIX_FMT_NV21,
+#endif
+    AV_PIX_FMT_NONE
+};
 static const enum AVPixelFormat pix_fmts_8bit[] = {
     AV_PIX_FMT_YUV420P,
     AV_PIX_FMT_YUVJ420P,
@@ -874,12 +895,14 @@ static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
 
 static av_cold void X264_init_static(AVCodec *codec)
 {
-    if (x264_bit_depth == 8)
+    if (X264_BIT_DEPTH == 8)
         codec->pix_fmts = pix_fmts_8bit;
-    else if (x264_bit_depth == 9)
+    else if (X264_BIT_DEPTH == 9)
         codec->pix_fmts = pix_fmts_9bit;
-    else if (x264_bit_depth == 10)
+    else if (X264_BIT_DEPTH == 10)
         codec->pix_fmts = pix_fmts_10bit;
+    else /* X264_BIT_DEPTH == 0 */
+        codec->pix_fmts = pix_fmts;
 }
 
 #define OFFSET(x) offsetof(X264Context, x)

Fixes issue Homebrew/homebrew-core#36003 where following error occurs while compiling mplayer (1.3.0) with libx264 (r2917):

libavcodec/libx264.c:271:9: error: use of undeclared identifier 'x264_bit_depth'
    if (x264_bit_depth > 8)

This patch is the aggregation of the commits 89f704cabab446afc8ba6ecea76714a51b1df32b and 2a111c99a60fdf4fe5eea2b073901630190c6c93 from ffmpeg's repository with adjusted path for mplayer.