1 files changed, 160 insertions, 0 deletions
diff --git a/media/libaom/src/aom_dsp/daalaboolreader.h b/media/libaom/src/aom_dsp/daalaboolreader.h
new file mode 100644
index 000000000..ba78f916d
--- /dev/null
+++ b/media/libaom/src/aom_dsp/daalaboolreader.h
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_AOM_DSP_DAALABOOLREADER_H_
+#define AOM_AOM_DSP_DAALABOOLREADER_H_
+
+#include "aom/aom_integer.h"
+#include "aom_dsp/entdec.h"
+#include "aom_dsp/prob.h"
+#if CONFIG_ACCOUNTING
+#include "av1/decoder/accounting.h"
+#endif
+#if CONFIG_BITSTREAM_DEBUG
+#include <stdio.h>
+#include "aom_util/debug_util.h"
+#endif  // CONFIG_BITSTREAM_DEBUG
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct daala_reader {
+  const uint8_t *buffer;
+  const uint8_t *buffer_end;
+  od_ec_dec ec;
+#if CONFIG_ACCOUNTING
+  Accounting *accounting;
+#endif
+  uint8_t allow_update_cdf;
+};
+
+typedef struct daala_reader daala_reader;
+
+int aom_daala_reader_init(daala_reader *r, const uint8_t *buffer, int size);
+const uint8_t *aom_daala_reader_find_begin(daala_reader *r);
+const uint8_t *aom_daala_reader_find_end(daala_reader *r);
+uint32_t aom_daala_reader_tell(const daala_reader *r);
+uint32_t aom_daala_reader_tell_frac(const daala_reader *r);
+// Returns true if the reader has tried to decode more data from the buffer
+// than was actually provided.
+int aom_daala_reader_has_overflowed(const daala_reader *r);
+
+static INLINE int aom_daala_read(daala_reader *r, int prob) {
+  int bit;
+  int p = (0x7FFFFF - (prob << 15) + prob) >> 8;
+#if CONFIG_BITSTREAM_DEBUG
+/*{
+  const int queue_r = bitstream_queue_get_read();
+  const int frame_idx = bitstream_queue_get_frame_read();
+  if (frame_idx == 0 && queue_r == 0) {
+    fprintf(stderr, "\n *** bitstream queue at frame_idx_r %d queue_r %d\n",
+            frame_idx, queue_r);
+  }
+}*/
+#endif
+
+  bit = od_ec_decode_bool_q15(&r->ec, p);
+
+#if CONFIG_BITSTREAM_DEBUG
+  {
+    int i;
+    int ref_bit, ref_nsymbs;
+    aom_cdf_prob ref_cdf[16];
+    const int queue_r = bitstream_queue_get_read();
+    const int frame_idx = bitstream_queue_get_frame_read();
+    bitstream_queue_pop(&ref_bit, ref_cdf, &ref_nsymbs);
+    if (ref_nsymbs != 2) {
+      fprintf(stderr,
+              "\n *** [bit] nsymbs error, frame_idx_r %d nsymbs %d ref_nsymbs "
+              "%d queue_r %d\n",
+              frame_idx, 2, ref_nsymbs, queue_r);
+      assert(0);
+    }
+    if ((ref_nsymbs != 2) || (ref_cdf[0] != (aom_cdf_prob)p) ||
+        (ref_cdf[1] != 32767)) {
+      fprintf(stderr,
+              "\n *** [bit] cdf error, frame_idx_r %d cdf {%d, %d} ref_cdf {%d",
+              frame_idx, p, 32767, ref_cdf[0]);
+      for (i = 1; i < ref_nsymbs; ++i) fprintf(stderr, ", %d", ref_cdf[i]);
+      fprintf(stderr, "} queue_r %d\n", queue_r);
+      assert(0);
+    }
+    if (bit != ref_bit) {
+      fprintf(stderr,
+              "\n *** [bit] symb error, frame_idx_r %d symb %d ref_symb %d "
+              "queue_r %d\n",
+              frame_idx, bit, ref_bit, queue_r);
+      assert(0);
+    }
+  }
+#endif
+
+  return bit;
+}
+
+static INLINE int aom_daala_reader_has_error(daala_reader *r) {
+  return r->ec.error;
+}
+
+static INLINE int daala_read_symbol(daala_reader *r, const aom_cdf_prob *cdf,
+                                    int nsymbs) {
+  int symb;
+  assert(cdf != NULL);
+  symb = od_ec_decode_cdf_q15(&r->ec, cdf, nsymbs);
+
+#if CONFIG_BITSTREAM_DEBUG
+  {
+    int i;
+    int cdf_error = 0;
+    int ref_symb, ref_nsymbs;
+    aom_cdf_prob ref_cdf[16];
+    const int queue_r = bitstream_queue_get_read();
+    const int frame_idx = bitstream_queue_get_frame_read();
+    bitstream_queue_pop(&ref_symb, ref_cdf, &ref_nsymbs);
+    if (nsymbs != ref_nsymbs) {
+      fprintf(stderr,
+              "\n *** nsymbs error, frame_idx_r %d nsymbs %d ref_nsymbs %d "
+              "queue_r %d\n",
+              frame_idx, nsymbs, ref_nsymbs, queue_r);
+      cdf_error = 0;
+      assert(0);
+    } else {
+      for (i = 0; i < nsymbs; ++i)
+        if (cdf[i] != ref_cdf[i]) cdf_error = 1;
+    }
+    if (cdf_error) {
+      fprintf(stderr, "\n *** cdf error, frame_idx_r %d cdf {%d", frame_idx,
+              cdf[0]);
+      for (i = 1; i < nsymbs; ++i) fprintf(stderr, ", %d", cdf[i]);
+      fprintf(stderr, "} ref_cdf {%d", ref_cdf[0]);
+      for (i = 1; i < ref_nsymbs; ++i) fprintf(stderr, ", %d", ref_cdf[i]);
+      fprintf(stderr, "} queue_r %d\n", queue_r);
+      assert(0);
+    }
+    if (symb != ref_symb) {
+      fprintf(
+          stderr,
+          "\n *** symb error, frame_idx_r %d symb %d ref_symb %d queue_r %d\n",
+          frame_idx, symb, ref_symb, queue_r);
+      assert(0);
+    }
+  }
+#endif
+
+  return symb;
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AOM_DSP_DAALABOOLREADER_H_