ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:08:02 +00:00
parent a08f61ddb9
commit a4b787f4b8
5429 changed files with 1356786 additions and 0 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/mlpdsp.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/mlpdsp.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2007-2008 Ian Caulfield
+ *               2009 Ramiro Polla
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "mlpdsp.h"
+#include "mlp.h"
+
+static void mlp_filter_channel(int32_t *state, const int32_t *coeff,
+                               int firorder, int iirorder,
+                               unsigned int filter_shift, int32_t mask,
+                               int blocksize, int32_t *sample_buffer)
+{
+    int32_t *firbuf = state;
+    int32_t *iirbuf = state + MAX_BLOCKSIZE + MAX_FIR_ORDER;
+    const int32_t *fircoeff = coeff;
+    const int32_t *iircoeff = coeff + MAX_FIR_ORDER;
+    int i;
+
+    for (i = 0; i < blocksize; i++) {
+        int32_t residual = *sample_buffer;
+        unsigned int order;
+        int64_t accum = 0;
+        int32_t result;
+
+        for (order = 0; order < firorder; order++)
+            accum += (int64_t) firbuf[order] * fircoeff[order];
+        for (order = 0; order < iirorder; order++)
+            accum += (int64_t) iirbuf[order] * iircoeff[order];
+
+        accum  = accum >> filter_shift;
+        result = (accum + residual) & mask;
+
+        *--firbuf = result;
+        *--iirbuf = result - accum;
+
+        *sample_buffer = result;
+        sample_buffer += MAX_CHANNELS;
+    }
+}
+
+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);
+}