1 files changed, 73 insertions, 0 deletions
diff --git a/chromium/third_party/ffmpeg/libavcodec/mlpdsp.c b/chromium/third_party/ffmpeg/libavcodec/mlpdsp.c
index b413e86db5d..3ae8c377081 100644
--- a/chromium/third_party/ffmpeg/libavcodec/mlpdsp.c
+++ b/chromium/third_party/ffmpeg/libavcodec/mlpdsp.c
@@ -57,9 +57,82 @@ static void mlp_filter_channel(int32_t *state, const int32_t *coeff,
     }
 }
 
+void ff_mlp_rematrix_channel(int32_t *samples,
+                             const int32_t *coeffs,
+                             const uint8_t *bypassed_lsbs,
+                             const int8_t *noise_buffer,
+                             int index,
+                             unsigned int dest_ch,
+                             uint16_t blockpos,
+                             unsigned int maxchan,
+                             int matrix_noise_shift,
+                             int access_unit_size_pow2,
+                             int32_t mask)
+{
+    unsigned int src_ch, i;
+    int index2 = 2 * index + 1;
+    for (i = 0; i < blockpos; i++) {
+        int64_t accum = 0;
+
+        for (src_ch = 0; src_ch <= maxchan; src_ch++)
+            accum += (int64_t) samples[src_ch] * coeffs[src_ch];
+
+        if (matrix_noise_shift) {
+            index &= access_unit_size_pow2 - 1;
+            accum += noise_buffer[index] << (matrix_noise_shift + 7);
+            index += index2;
+        }
+
+        samples[dest_ch] = ((accum >> 14) & mask) + *bypassed_lsbs;
+        bypassed_lsbs += MAX_CHANNELS;
+        samples += MAX_CHANNELS;
+    }
+}
+
+static int32_t (*mlp_select_pack_output(uint8_t *ch_assign,
+                                        int8_t *output_shift,
+                                        uint8_t max_matrix_channel,
+                                        int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int)
+{
+    return ff_mlp_pack_output;
+}
+
+int32_t ff_mlp_pack_output(int32_t lossless_check_data,
+                           uint16_t blockpos,
+                           int32_t (*sample_buffer)[MAX_CHANNELS],
+                           void *data,
+                           uint8_t *ch_assign,
+                           int8_t *output_shift,
+                           uint8_t max_matrix_channel,
+                           int is32)
+{
+    unsigned int i, out_ch = 0;
+    int32_t *data_32 = data;
+    int16_t *data_16 = data;
+
+    for (i = 0; i < blockpos; i++) {
+        for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) {
+            int mat_ch = ch_assign[out_ch];
+            int32_t sample = sample_buffer[i][mat_ch]
+                          << output_shift[mat_ch];
+            lossless_check_data ^= (sample & 0xffffff) << mat_ch;
+            if (is32)
+                *data_32++ = sample << 8;
+            else
+                *data_16++ = sample >> 8;
+        }
+    }
+    return lossless_check_data;
+}
+
 av_cold void ff_mlpdsp_init(MLPDSPContext *c)
 {
     c->mlp_filter_channel = mlp_filter_channel;
+    c->mlp_rematrix_channel = ff_mlp_rematrix_channel;
+    c->mlp_select_pack_output = mlp_select_pack_output;
+    c->mlp_pack_output = ff_mlp_pack_output;
+    if (ARCH_ARM)
+        ff_mlpdsp_init_arm(c);
     if (ARCH_X86)
         ff_mlpdsp_init_x86(c);
 }