1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef VP9_DECODER_VP9_DECODER_H_
12 #define VP9_DECODER_VP9_DECODER_H_
13
14 #include "./vpx_config.h"
15
16 #include "vpx/vpx_codec.h"
17 #include "vpx_dsp/bitreader.h"
18 #include "vpx_scale/yv12config.h"
19 #include "vpx_util/vpx_thread.h"
20
21 #include "vp9/common/vp9_thread_common.h"
22 #include "vp9/common/vp9_onyxc_int.h"
23 #include "vp9/common/vp9_ppflags.h"
24
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28
29 typedef struct TileBuffer {
30 const uint8_t *data;
31 size_t size;
32 int col; // only used with multi-threaded decoding
33 } TileBuffer;
34
35 typedef struct TileWorkerData {
36 const uint8_t *data_end;
37 int buf_start, buf_end; // pbi->tile_buffers to decode, inclusive
38 vpx_reader bit_reader;
39 FRAME_COUNTS counts;
40 DECLARE_ALIGNED(16, MACROBLOCKD, xd);
41 /* dqcoeff are shared by all the planes. So planes must be decoded serially */
42 DECLARE_ALIGNED(16, tran_low_t, dqcoeff[32 * 32]);
43 struct vpx_internal_error_info error_info;
44 } TileWorkerData;
45
46 typedef struct VP9Decoder {
47 DECLARE_ALIGNED(16, MACROBLOCKD, mb);
48
49 DECLARE_ALIGNED(16, VP9_COMMON, common);
50
51 int ready_for_new_data;
52
53 int refresh_frame_flags;
54
55 // TODO(hkuang): Combine this with cur_buf in macroblockd as they are
56 // the same.
57 RefCntBuffer *cur_buf; // Current decoding frame buffer.
58
59 VPxWorker lf_worker;
60 VPxWorker *tile_workers;
61 TileWorkerData *tile_worker_data;
62 TileBuffer tile_buffers[64];
63 int num_tile_workers;
64 int total_tiles;
65
66 VP9LfSync lf_row_sync;
67
68 vpx_decrypt_cb decrypt_cb;
69 void *decrypt_state;
70
71 int max_threads;
72 int inv_tile_order;
73 int need_resync; // wait for key/intra-only frame.
74 int hold_ref_buf; // hold the reference buffer.
75 } VP9Decoder;
76
77 int vp9_receive_compressed_data(struct VP9Decoder *pbi, size_t size,
78 const uint8_t **dest);
79
80 int vp9_get_raw_frame(struct VP9Decoder *pbi, YV12_BUFFER_CONFIG *sd,
81 vp9_ppflags_t *flags);
82
83 vpx_codec_err_t vp9_copy_reference_dec(struct VP9Decoder *pbi,
84 VP9_REFFRAME ref_frame_flag,
85 YV12_BUFFER_CONFIG *sd);
86
87 vpx_codec_err_t vp9_set_reference_dec(VP9_COMMON *cm,
88 VP9_REFFRAME ref_frame_flag,
89 YV12_BUFFER_CONFIG *sd);
90
read_marker(vpx_decrypt_cb decrypt_cb,void * decrypt_state,const uint8_t * data)91 static INLINE uint8_t read_marker(vpx_decrypt_cb decrypt_cb,
92 void *decrypt_state, const uint8_t *data) {
93 if (decrypt_cb) {
94 uint8_t marker;
95 decrypt_cb(decrypt_state, data, &marker, 1);
96 return marker;
97 }
98 return *data;
99 }
100
101 // This function is exposed for use in tests, as well as the inlined function
102 // "read_marker".
103 vpx_codec_err_t vp9_parse_superframe_index(const uint8_t *data, size_t data_sz,
104 uint32_t sizes[8], int *count,
105 vpx_decrypt_cb decrypt_cb,
106 void *decrypt_state);
107
108 struct VP9Decoder *vp9_decoder_create(BufferPool *const pool);
109
110 void vp9_decoder_remove(struct VP9Decoder *pbi);
111
decrease_ref_count(int idx,RefCntBuffer * const frame_bufs,BufferPool * const pool)112 static INLINE void decrease_ref_count(int idx, RefCntBuffer *const frame_bufs,
113 BufferPool *const pool) {
114 if (idx >= 0 && frame_bufs[idx].ref_count > 0) {
115 --frame_bufs[idx].ref_count;
116 // A worker may only get a free framebuffer index when calling get_free_fb.
117 // But the private buffer is not set up until finish decoding header.
118 // So any error happens during decoding header, the frame_bufs will not
119 // have valid priv buffer.
120 if (!frame_bufs[idx].released && frame_bufs[idx].ref_count == 0 &&
121 frame_bufs[idx].raw_frame_buffer.priv) {
122 pool->release_fb_cb(pool->cb_priv, &frame_bufs[idx].raw_frame_buffer);
123 frame_bufs[idx].released = 1;
124 }
125 }
126 }
127
128 #ifdef __cplusplus
129 } // extern "C"
130 #endif
131
132 #endif // VP9_DECODER_VP9_DECODER_H_
133