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b36eade7f3
Add libvpx submodule that tracks the upstream version 1.3.0. This is needed to build a libgstcodecparsers_vpx.so library with all symbols placed into the GSTREAMER namespace.
119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/*
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* gstlibvpx.c - GStreamer/libvpx glue
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <string.h>
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#include <assert.h>
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#include <vp8/common/entropy.h>
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#include <vp8/common/entropymv.h>
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#include <vp8/common/default_coef_probs.h>
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#include <vp8/decoder/dboolhuff.h>
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#include "gstlibvpx.h"
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#define BOOL_DECODER_CAST(bd) \
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((BOOL_DECODER *)(&(bd)->private[1]))
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bool
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vp8_bool_decoder_init (vp8_bool_decoder * bd, const uint8_t * buf,
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unsigned int buf_size)
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{
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assert ((sizeof (*bd) - sizeof (bd->private[0])) >= sizeof (BOOL_DECODER));
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bd->private[0] = (uintptr_t)buf;
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return vp8dx_start_decode (BOOL_DECODER_CAST (bd), buf, buf_size,
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NULL, NULL) == 0;
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}
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int
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vp8_bool_decoder_read (vp8_bool_decoder * bd, uint8_t prob)
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{
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return vp8dx_decode_bool (BOOL_DECODER_CAST (bd), prob);
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}
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int
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vp8_bool_decoder_read_literal (vp8_bool_decoder * bd, int bits)
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{
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return vp8_decode_value (BOOL_DECODER_CAST (bd), bits);
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}
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unsigned int
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vp8_bool_decoder_get_pos (vp8_bool_decoder * bd_)
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{
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BOOL_DECODER *const bd = BOOL_DECODER_CAST (bd_);
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return ((uintptr_t)bd->user_buffer - bd_->private[0]) * 8 - (8 + bd->count);
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}
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void
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vp8_bool_decoder_get_state (vp8_bool_decoder * bd_,
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vp8_bool_decoder_state * state)
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{
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BOOL_DECODER *const bd = BOOL_DECODER_CAST (bd_);
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if (bd->count < 0)
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vp8dx_bool_decoder_fill (bd);
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state->range = bd->range;
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state->value = (uint8_t) ((bd->value) >> (VP8_BD_VALUE_SIZE - 8));
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state->count = (8 + bd->count) % 8;
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}
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void
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vp8_init_token_update_probs (uint8_t
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probs[BLOCK_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS][ENTROPY_NODES])
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{
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memcpy (probs, vp8_coef_update_probs, sizeof (vp8_coef_update_probs));
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}
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void
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vp8_init_default_token_probs (uint8_t
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probs[BLOCK_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS][ENTROPY_NODES])
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{
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memcpy (probs, default_coef_probs, sizeof (default_coef_probs));
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}
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void
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vp8_init_mv_update_probs (uint8_t probs[2][MVPcount])
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{
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memcpy (probs[0], vp8_mv_update_probs[0].prob,
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sizeof (vp8_mv_update_probs[0].prob));
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memcpy (probs[1], vp8_mv_update_probs[1].prob,
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sizeof (vp8_mv_update_probs[1].prob));
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}
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void
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vp8_init_default_mv_probs (uint8_t probs[2][MVPcount])
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{
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memcpy (probs[0], vp8_default_mv_context[0].prob,
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sizeof (vp8_default_mv_context[0].prob));
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memcpy (probs[1], vp8_default_mv_context[1].prob,
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sizeof (vp8_default_mv_context[1].prob));
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}
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void
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vp8_init_default_intra_mode_probs (uint8_t y_probs[VP8_YMODES-1],
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uint8_t uv_probs[VP8_UV_MODES-1])
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{
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extern const uint8_t vp8_kf_ymode_prob[VP8_YMODES-1];
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extern const uint8_t vp8_kf_uv_mode_prob[VP8_UV_MODES-1];
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memcpy (y_probs, vp8_kf_ymode_prob, sizeof (vp8_kf_ymode_prob));
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memcpy (uv_probs, vp8_kf_uv_mode_prob, sizeof (vp8_kf_uv_mode_prob));
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}
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void
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vp8_init_default_inter_mode_probs (uint8_t y_probs[VP8_YMODES-1],
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uint8_t uv_probs[VP8_UV_MODES-1])
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{
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extern const uint8_t vp8_ymode_prob[VP8_YMODES-1];
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extern const uint8_t vp8_uv_mode_prob[VP8_UV_MODES-1];
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memcpy (y_probs, vp8_ymode_prob, sizeof (vp8_ymode_prob));
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memcpy (uv_probs, vp8_uv_mode_prob, sizeof (vp8_uv_mode_prob));
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}
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