From ecc31f6b086453ab9811dce2ae5ceb6a7c19e4ad Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 23 Mar 2016 09:41:05 +0100
Subject: h264: move ff_h264_check_intra[4x4]_pred_mode() to h264_parse

It is shared with svq3.
---
 libavcodec/h264.c | 93 -------------------------------------------------------
 1 file changed, 93 deletions(-)

(limited to 'libavcodec/h264.c')

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 49b3f93842..a90ef6477d 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -114,99 +114,6 @@ void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
     }
 }
 
-/**
- * Check if the top & left blocks are available if needed and
- * change the dc mode so it only uses the available blocks.
- */
-int ff_h264_check_intra4x4_pred_mode(const H264Context *h, H264SliceContext *sl)
-{
-    static const int8_t top[12] = {
-        -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
-    };
-    static const int8_t left[12] = {
-        0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
-    };
-    int i;
-
-    if (!(sl->top_samples_available & 0x8000)) {
-        for (i = 0; i < 4; i++) {
-            int status = top[sl->intra4x4_pred_mode_cache[scan8[0] + i]];
-            if (status < 0) {
-                av_log(h->avctx, AV_LOG_ERROR,
-                       "top block unavailable for requested intra4x4 mode %d at %d %d\n",
-                       status, sl->mb_x, sl->mb_y);
-                return AVERROR_INVALIDDATA;
-            } else if (status) {
-                sl->intra4x4_pred_mode_cache[scan8[0] + i] = status;
-            }
-        }
-    }
-
-    if ((sl->left_samples_available & 0x8888) != 0x8888) {
-        static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
-        for (i = 0; i < 4; i++)
-            if (!(sl->left_samples_available & mask[i])) {
-                int status = left[sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
-                if (status < 0) {
-                    av_log(h->avctx, AV_LOG_ERROR,
-                           "left block unavailable for requested intra4x4 mode %d at %d %d\n",
-                           status, sl->mb_x, sl->mb_y);
-                    return AVERROR_INVALIDDATA;
-                } else if (status) {
-                    sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
-                }
-            }
-    }
-
-    return 0;
-} // FIXME cleanup like ff_h264_check_intra_pred_mode
-
-/**
- * Check if the top & left blocks are available if needed and
- * change the dc mode so it only uses the available blocks.
- */
-int ff_h264_check_intra_pred_mode(const H264Context *h, H264SliceContext *sl,
-                                  int mode, int is_chroma)
-{
-    static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
-    static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
-
-    if (mode > 3U) {
-        av_log(h->avctx, AV_LOG_ERROR,
-               "out of range intra chroma pred mode at %d %d\n",
-               sl->mb_x, sl->mb_y);
-        return AVERROR_INVALIDDATA;
-    }
-
-    if (!(sl->top_samples_available & 0x8000)) {
-        mode = top[mode];
-        if (mode < 0) {
-            av_log(h->avctx, AV_LOG_ERROR,
-                   "top block unavailable for requested intra mode at %d %d\n",
-                   sl->mb_x, sl->mb_y);
-            return AVERROR_INVALIDDATA;
-        }
-    }
-
-    if ((sl->left_samples_available & 0x8080) != 0x8080) {
-        mode = left[mode];
-        if (is_chroma && (sl->left_samples_available & 0x8080)) {
-            // mad cow disease mode, aka MBAFF + constrained_intra_pred
-            mode = ALZHEIMER_DC_L0T_PRED8x8 +
-                   (!(sl->left_samples_available & 0x8000)) +
-                   2 * (mode == DC_128_PRED8x8);
-        }
-        if (mode < 0) {
-            av_log(h->avctx, AV_LOG_ERROR,
-                   "left block unavailable for requested intra mode at %d %d\n",
-                   sl->mb_x, sl->mb_y);
-            return AVERROR_INVALIDDATA;
-        }
-    }
-
-    return mode;
-}
-
 const uint8_t *ff_h264_decode_nal(H264Context *h, H264SliceContext *sl,
                                   const uint8_t *src,
                                   int *dst_length, int *consumed, int length)
-- 
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