1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* 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.
*/
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "aom_ports/mem_ops.h"
#include "common/ivfdec.h"
#include "common/obudec.h"
#include "common/tools_common.h"
#include "common/video_reader.h"
#include "common/webmdec.h"
struct AvxVideoReaderStruct {
AvxVideoInfo info;
struct AvxInputContext input_ctx;
struct ObuDecInputContext obu_ctx;
struct WebmInputContext webm_ctx;
uint8_t *buffer;
size_t buffer_size;
size_t frame_size;
aom_codec_pts_t pts;
};
AvxVideoReader *aom_video_reader_open(const char *filename) {
AvxVideoReader *reader = NULL;
const bool using_file = strcmp(filename, "-") != 0;
FILE *const file =
using_file ? fopen(filename, "rb") : set_binary_mode(stdin);
if (!file) return NULL; // Can't open file
reader = (AvxVideoReader *)calloc(1, sizeof(*reader));
if (!reader) {
fclose(file);
return NULL; // Can't allocate AvxVideoReader
}
reader->input_ctx.filename = filename;
reader->input_ctx.file = file;
reader->obu_ctx.avx_ctx = &reader->input_ctx;
reader->obu_ctx.is_annexb = 1;
// TODO(https://crbug.com/aomedia/1706): webm type does not support reading
// from stdin yet, and file_is_webm is not using the detect buffer when
// determining the type. Therefore it should only be checked when using a file
// and needs to be checked prior to other types.
if (false) {
#if CONFIG_WEBM_IO
} else if (using_file &&
file_is_webm(&reader->webm_ctx, &reader->input_ctx)) {
reader->input_ctx.file_type = FILE_TYPE_WEBM;
reader->info.codec_fourcc = reader->input_ctx.fourcc;
reader->info.frame_width = reader->input_ctx.width;
reader->info.frame_height = reader->input_ctx.height;
#endif
} else if (file_is_ivf(&reader->input_ctx)) {
reader->input_ctx.file_type = FILE_TYPE_IVF;
reader->info.codec_fourcc = reader->input_ctx.fourcc;
reader->info.frame_width = reader->input_ctx.width;
reader->info.frame_height = reader->input_ctx.height;
} else if (file_is_obu(&reader->obu_ctx)) {
reader->input_ctx.file_type = FILE_TYPE_OBU;
// assume AV1
reader->info.codec_fourcc = AV1_FOURCC;
reader->info.is_annexb = reader->obu_ctx.is_annexb;
} else {
fclose(file);
free(reader);
return NULL; // Unknown file type
}
return reader;
}
void aom_video_reader_close(AvxVideoReader *reader) {
if (reader) {
fclose(reader->input_ctx.file);
if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
obudec_free(&reader->obu_ctx);
}
free(reader->buffer);
free(reader);
}
}
int aom_video_reader_read_frame(AvxVideoReader *reader) {
if (reader->input_ctx.file_type == FILE_TYPE_IVF) {
return !ivf_read_frame(&reader->input_ctx, &reader->buffer,
&reader->frame_size, &reader->buffer_size,
&reader->pts);
} else if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
return !obudec_read_temporal_unit(&reader->obu_ctx, &reader->buffer,
&reader->frame_size,
&reader->buffer_size);
#if CONFIG_WEBM_IO
} else if (reader->input_ctx.file_type == FILE_TYPE_WEBM) {
return !webm_read_frame(&reader->webm_ctx, &reader->buffer,
&reader->frame_size, &reader->buffer_size);
#endif
} else {
assert(0);
return 0;
}
}
const uint8_t *aom_video_reader_get_frame(AvxVideoReader *reader,
size_t *size) {
if (size) *size = reader->frame_size;
return reader->buffer;
}
int64_t aom_video_reader_get_frame_pts(AvxVideoReader *reader) {
return (int64_t)reader->pts;
}
FILE *aom_video_reader_get_file(AvxVideoReader *reader) {
return reader->input_ctx.file;
}
const AvxVideoInfo *aom_video_reader_get_info(AvxVideoReader *reader) {
return &reader->info;
}
void aom_video_reader_set_fourcc(AvxVideoReader *reader, uint32_t fourcc) {
reader->info.codec_fourcc = fourcc;
}
|
