h264: factor hwaccel pixel formats list

This is to avoid proliferation of similar tables in following changes.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

libavcodec/h264_slice.c

@@ -143,42 +143,6 @@ static const uint8_t dequant8_coeff_init[6][6] = {
     { 36, 32, 58, 34, 46, 43 },
 };
 
-static const enum AVPixelFormat h264_hwaccel_pixfmt_list_420[] = {
-#if CONFIG_H264_DXVA2_HWACCEL
-    AV_PIX_FMT_DXVA2_VLD,
-#endif
-#if CONFIG_H264_VAAPI_HWACCEL
-    AV_PIX_FMT_VAAPI_VLD,
-#endif
-#if CONFIG_H264_VDA_HWACCEL
-    AV_PIX_FMT_VDA_VLD,
-    AV_PIX_FMT_VDA,
-#endif
-#if CONFIG_H264_VDPAU_HWACCEL
-    AV_PIX_FMT_VDPAU,
-#endif
-    AV_PIX_FMT_YUV420P,
-    AV_PIX_FMT_NONE
-};
-
-static const enum AVPixelFormat h264_hwaccel_pixfmt_list_jpeg_420[] = {
-#if CONFIG_H264_DXVA2_HWACCEL
-    AV_PIX_FMT_DXVA2_VLD,
-#endif
-#if CONFIG_H264_VAAPI_HWACCEL
-    AV_PIX_FMT_VAAPI_VLD,
-#endif
-#if CONFIG_H264_VDA_HWACCEL
-    AV_PIX_FMT_VDA_VLD,
-    AV_PIX_FMT_VDA,
-#endif
-#if CONFIG_H264_VDPAU_HWACCEL
-    AV_PIX_FMT_VDPAU,
-#endif
-    AV_PIX_FMT_YUVJ420P,
-    AV_PIX_FMT_NONE
-};
-
 
 static void release_unused_pictures(H264Context *h, int remove_current)
 {
@@ -975,54 +939,69 @@ static int clone_slice(H264Context *dst, H264Context *src)
 
 static enum AVPixelFormat get_pixel_format(H264Context *h)
 {
-    enum AVPixelFormat pix_fmts[2];
+#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
+                     CONFIG_H264_VAAPI_HWACCEL + \
+                     (CONFIG_H264_VDA_HWACCEL * 2) + \
+                     CONFIG_H264_VDPAU_HWACCEL)
+    enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
     const enum AVPixelFormat *choices = pix_fmts;
 
-    pix_fmts[1] = AV_PIX_FMT_NONE;
-
     switch (h->sps.bit_depth_luma) {
     case 9:
         if (CHROMA444(h)) {
             if (h->avctx->colorspace == AVCOL_SPC_RGB) {
-                pix_fmts[0] = AV_PIX_FMT_GBRP9;
+                *fmt++ = AV_PIX_FMT_GBRP9;
             } else
-                pix_fmts[0] = AV_PIX_FMT_YUV444P9;
+                *fmt++ = AV_PIX_FMT_YUV444P9;
         } else if (CHROMA422(h))
-            pix_fmts[0] = AV_PIX_FMT_YUV422P9;
+            *fmt++ = AV_PIX_FMT_YUV422P9;
         else
-            pix_fmts[0] = AV_PIX_FMT_YUV420P9;
+            *fmt++ = AV_PIX_FMT_YUV420P9;
         break;
     case 10:
         if (CHROMA444(h)) {
             if (h->avctx->colorspace == AVCOL_SPC_RGB) {
-                pix_fmts[0] = AV_PIX_FMT_GBRP10;
+                *fmt++ = AV_PIX_FMT_GBRP10;
             } else
-                pix_fmts[0] = AV_PIX_FMT_YUV444P10;
+                *fmt++ = AV_PIX_FMT_YUV444P10;
         } else if (CHROMA422(h))
-            pix_fmts[0] = AV_PIX_FMT_YUV422P10;
+            *fmt++ = AV_PIX_FMT_YUV422P10;
         else
-            pix_fmts[0] = AV_PIX_FMT_YUV420P10;
+            *fmt++ = AV_PIX_FMT_YUV420P10;
         break;
     case 8:
         if (CHROMA444(h)) {
             if (h->avctx->colorspace == AVCOL_SPC_RGB)
-                pix_fmts[0] = AV_PIX_FMT_GBRP;
+                *fmt++ = AV_PIX_FMT_GBRP;
             else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
-                pix_fmts[0] = AV_PIX_FMT_YUVJ444P;
+                *fmt++ = AV_PIX_FMT_YUVJ444P;
             else
-                pix_fmts[0] = AV_PIX_FMT_YUV444P;
+                *fmt++ = AV_PIX_FMT_YUV444P;
         } else if (CHROMA422(h)) {
             if (h->avctx->color_range == AVCOL_RANGE_JPEG)
-                pix_fmts[0] = AV_PIX_FMT_YUVJ422P;
+                *fmt++ = AV_PIX_FMT_YUVJ422P;
             else
-                pix_fmts[0] = AV_PIX_FMT_YUV422P;
+                *fmt++ = AV_PIX_FMT_YUV422P;
         } else {
+#if CONFIG_H264_DXVA2_HWACCEL
+            *fmt++ = AV_PIX_FMT_DXVA2_VLD;
+#endif
+#if CONFIG_H264_VAAPI_HWACCEL
+            *fmt++ = AV_PIX_FMT_VAAPI_VLD;
+#endif
+#if CONFIG_H264_VDA_HWACCEL
+            *fmt++ = AV_PIX_FMT_VDA_VLD;
+            *fmt++ = AV_PIX_FMT_VDA;
+#endif
+#if CONFIG_H264_VDPAU_HWACCEL
+            *fmt++ = AV_PIX_FMT_VDPAU;
+#endif
             if (h->avctx->codec->pix_fmts)
                 choices = h->avctx->codec->pix_fmts;
             else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
-                choices = h264_hwaccel_pixfmt_list_jpeg_420;
+                *fmt++ = AV_PIX_FMT_YUVJ420P;
             else
-                choices = h264_hwaccel_pixfmt_list_420;
+                *fmt++ = AV_PIX_FMT_YUV420P;
         }
         break;
     default:
@@ -1031,6 +1010,8 @@ static enum AVPixelFormat get_pixel_format(H264Context *h)
         return AVERROR_INVALIDDATA;
     }
 
+    *fmt = AV_PIX_FMT_NONE;
+
     return ff_get_format(h->avctx, choices);
 }