GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/options.c Lines: 127 151 84.1 %
Date: 2019-11-22 03:34:36 Branches: 70 108 64.8 %

Line Branch Exec Source
1
/*
2
 * Copyright (c) 2001 Fabrice Bellard
3
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22
/**
23
 * @file
24
 * Options definition for AVCodecContext.
25
 */
26
27
#include "avcodec.h"
28
#include "internal.h"
29
#include "libavutil/avassert.h"
30
#include "libavutil/internal.h"
31
#include "libavutil/mem.h"
32
#include "libavutil/opt.h"
33
#include <string.h>
34
35
FF_DISABLE_DEPRECATION_WARNINGS
36
#include "options_table.h"
37
FF_ENABLE_DEPRECATION_WARNINGS
38
39
3413
static const char* context_to_name(void* ptr) {
40
3413
    AVCodecContext *avc= ptr;
41
42

3413
    if(avc && avc->codec && avc->codec->name)
43
3195
        return avc->codec->name;
44
    else
45
218
        return "NULL";
46
}
47
48
static void *codec_child_next(void *obj, void *prev)
49
{
50
    AVCodecContext *s = obj;
51
    if (!prev && s->codec && s->codec->priv_class && s->priv_data)
52
        return s->priv_data;
53
    return NULL;
54
}
55
56
7963485
static const AVClass *codec_child_class_next(const AVClass *prev)
57
{
58
7963485
    AVCodec *c = NULL;
59
60
    /* find the codec that corresponds to prev */
61

1633272320
    while (prev && (c = av_codec_next(c)))
62
1633201670
        if (c->priv_class == prev)
63
7892835
            break;
64
65
    /* find next codec with priv options */
66
43253222
    while (c = av_codec_next(c))
67
43182807
        if (c->priv_class)
68
7893070
            return c->priv_class;
69
70415
    return NULL;
70
}
71
72
3413
static AVClassCategory get_category(void *ptr)
73
{
74
3413
    AVCodecContext* avctx = ptr;
75

3413
    if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
76
327
    else                                     return AV_CLASS_CATEGORY_ENCODER;
77
}
78
79
static const AVClass av_codec_context_class = {
80
    .class_name              = "AVCodecContext",
81
    .item_name               = context_to_name,
82
    .option                  = avcodec_options,
83
    .version                 = LIBAVUTIL_VERSION_INT,
84
    .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
85
    .child_next              = codec_child_next,
86
    .child_class_next        = codec_child_class_next,
87
    .category                = AV_CLASS_CATEGORY_ENCODER,
88
    .get_category            = get_category,
89
};
90
91
50169
static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
92
{
93
50169
    int flags=0;
94
50169
    memset(s, 0, sizeof(AVCodecContext));
95
96
50169
    s->av_class = &av_codec_context_class;
97
98
50169
    s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
99
50169
    if (codec) {
100
12175
        s->codec = codec;
101
12175
        s->codec_id = codec->id;
102
    }
103
104
50169
    if(s->codec_type == AVMEDIA_TYPE_AUDIO)
105
2503
        flags= AV_OPT_FLAG_AUDIO_PARAM;
106
47666
    else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
107
9600
        flags= AV_OPT_FLAG_VIDEO_PARAM;
108
38066
    else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
109
72
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
110
50169
    av_opt_set_defaults2(s, flags, flags);
111
112
50169
    s->time_base           = (AVRational){0,1};
113
50169
    s->framerate           = (AVRational){ 0, 1 };
114
50169
    s->pkt_timebase        = (AVRational){ 0, 1 };
115
50169
    s->get_buffer2         = avcodec_default_get_buffer2;
116
50169
    s->get_format          = avcodec_default_get_format;
117
50169
    s->execute             = avcodec_default_execute;
118
50169
    s->execute2            = avcodec_default_execute2;
119
50169
    s->sample_aspect_ratio = (AVRational){0,1};
120
50169
    s->pix_fmt             = AV_PIX_FMT_NONE;
121
50169
    s->sw_pix_fmt          = AV_PIX_FMT_NONE;
122
50169
    s->sample_fmt          = AV_SAMPLE_FMT_NONE;
123
124
50169
    s->reordered_opaque    = AV_NOPTS_VALUE;
125

50169
    if(codec && codec->priv_data_size){
126
6974
        if(!s->priv_data){
127
6974
            s->priv_data= av_mallocz(codec->priv_data_size);
128
6974
            if (!s->priv_data) {
129
                return AVERROR(ENOMEM);
130
            }
131
        }
132
6974
        if(codec->priv_class){
133
2291
            *(const AVClass**)s->priv_data = codec->priv_class;
134
2291
            av_opt_set_defaults(s->priv_data);
135
        }
136
    }
137

50169
    if (codec && codec->defaults) {
138
        int ret;
139
186
        const AVCodecDefault *d = codec->defaults;
140
372
        while (d->key) {
141
186
            ret = av_opt_set(s, d->key, d->value, 0);
142
186
            av_assert0(ret >= 0);
143
186
            d++;
144
        }
145
    }
146
50169
    return 0;
147
}
148
149
#if FF_API_GET_CONTEXT_DEFAULTS
150
int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec)
151
{
152
    return init_context_defaults(s, codec);
153
}
154
#endif
155
156
50169
AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
157
{
158
50169
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
159
160
50169
    if (!avctx)
161
        return NULL;
162
163
50169
    if (init_context_defaults(avctx, codec) < 0) {
164
        av_free(avctx);
165
        return NULL;
166
    }
167
168
50169
    return avctx;
169
}
170
171
50006
void avcodec_free_context(AVCodecContext **pavctx)
172
{
173
50006
    AVCodecContext *avctx = *pavctx;
174
175
50006
    if (!avctx)
176
3
        return;
177
178
50003
    avcodec_close(avctx);
179
180
50003
    av_freep(&avctx->extradata);
181
50003
    av_freep(&avctx->subtitle_header);
182
50003
    av_freep(&avctx->intra_matrix);
183
50003
    av_freep(&avctx->inter_matrix);
184
50003
    av_freep(&avctx->rc_override);
185
186
50003
    av_freep(pavctx);
187
}
188
189
#if FF_API_COPY_CONTEXT
190
5757
static void copy_context_reset(AVCodecContext *avctx)
191
{
192
    int i;
193
194
5757
    av_opt_free(avctx);
195
#if FF_API_CODED_FRAME
196
FF_DISABLE_DEPRECATION_WARNINGS
197
5757
    av_frame_free(&avctx->coded_frame);
198
FF_ENABLE_DEPRECATION_WARNINGS
199
#endif
200
5757
    av_freep(&avctx->rc_override);
201
5757
    av_freep(&avctx->intra_matrix);
202
5757
    av_freep(&avctx->inter_matrix);
203
5757
    av_freep(&avctx->extradata);
204
5757
    av_freep(&avctx->subtitle_header);
205
5757
    av_buffer_unref(&avctx->hw_frames_ctx);
206
5757
    av_buffer_unref(&avctx->hw_device_ctx);
207
5757
    for (i = 0; i < avctx->nb_coded_side_data; i++)
208
        av_freep(&avctx->coded_side_data[i].data);
209
5757
    av_freep(&avctx->coded_side_data);
210
5757
    avctx->subtitle_header_size = 0;
211
5757
    avctx->nb_coded_side_data = 0;
212
5757
    avctx->extradata_size = 0;
213
5757
}
214
215
5757
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
216
{
217
5757
    const AVCodec *orig_codec = dest->codec;
218
5757
    uint8_t *orig_priv_data = dest->priv_data;
219
220
5757
    if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
221
        av_log(dest, AV_LOG_ERROR,
222
               "Tried to copy AVCodecContext %p into already-initialized %p\n",
223
               src, dest);
224
        return AVERROR(EINVAL);
225
    }
226
227
5757
    copy_context_reset(dest);
228
229
5757
    memcpy(dest, src, sizeof(*dest));
230
5757
    av_opt_copy(dest, src);
231
232
5757
    dest->priv_data       = orig_priv_data;
233
5757
    dest->codec           = orig_codec;
234
235

5757
    if (orig_priv_data && src->codec && src->codec->priv_class &&
236

12
        dest->codec && dest->codec->priv_class)
237
8
        av_opt_copy(orig_priv_data, src->priv_data);
238
239
240
    /* set values specific to opened codecs back to their default state */
241
5757
    dest->slice_offset    = NULL;
242
5757
    dest->hwaccel         = NULL;
243
5757
    dest->internal        = NULL;
244
#if FF_API_CODED_FRAME
245
FF_DISABLE_DEPRECATION_WARNINGS
246
5757
    dest->coded_frame     = NULL;
247
FF_ENABLE_DEPRECATION_WARNINGS
248
#endif
249
250
    /* reallocate values that should be allocated separately */
251
5757
    dest->extradata       = NULL;
252
5757
    dest->coded_side_data = NULL;
253
5757
    dest->intra_matrix    = NULL;
254
5757
    dest->inter_matrix    = NULL;
255
5757
    dest->rc_override     = NULL;
256
5757
    dest->subtitle_header = NULL;
257
5757
    dest->hw_frames_ctx   = NULL;
258
5757
    dest->hw_device_ctx   = NULL;
259
5757
    dest->nb_coded_side_data = 0;
260
261
#define alloc_and_copy_or_fail(obj, size, pad) \
262
    if (src->obj && size > 0) { \
263
        dest->obj = av_malloc(size + pad); \
264
        if (!dest->obj) \
265
            goto fail; \
266
        memcpy(dest->obj, src->obj, size); \
267
        if (pad) \
268
            memset(((uint8_t *) dest->obj) + size, 0, pad); \
269
    }
270

5757
    alloc_and_copy_or_fail(extradata,    src->extradata_size,
271
                           AV_INPUT_BUFFER_PADDING_SIZE);
272
5757
    dest->extradata_size  = src->extradata_size;
273

5757
    alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
274

5757
    alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
275

5757
    alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);
276

5757
    alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
277
5757
    av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
278
#undef alloc_and_copy_or_fail
279
280
5757
    if (src->hw_frames_ctx) {
281
        dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
282
        if (!dest->hw_frames_ctx)
283
            goto fail;
284
    }
285
286
5757
    return 0;
287
288
fail:
289
    copy_context_reset(dest);
290
    return AVERROR(ENOMEM);
291
}
292
#endif
293
294
95308
const AVClass *avcodec_get_class(void)
295
{
296
95308
    return &av_codec_context_class;
297
}
298
299
#define FOFFSET(x) offsetof(AVFrame,x)
300
301
static const AVOption frame_options[]={
302
{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
303
{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
304
{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
305
{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
306
{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
307
{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
308
{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
309
{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
310
{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
311
{NULL},
312
};
313
314
static const AVClass av_frame_class = {
315
    .class_name              = "AVFrame",
316
    .item_name               = NULL,
317
    .option                  = frame_options,
318
    .version                 = LIBAVUTIL_VERSION_INT,
319
};
320
321
const AVClass *avcodec_get_frame_class(void)
322
{
323
    return &av_frame_class;
324
}
325
326
#define SROFFSET(x) offsetof(AVSubtitleRect,x)
327
328
static const AVOption subtitle_rect_options[]={
329
{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
330
{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
331
{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
332
{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
333
{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
334
{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
335
{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
336
{NULL},
337
};
338
339
static const AVClass av_subtitle_rect_class = {
340
    .class_name             = "AVSubtitleRect",
341
    .item_name              = NULL,
342
    .option                 = subtitle_rect_options,
343
    .version                = LIBAVUTIL_VERSION_INT,
344
};
345
346
const AVClass *avcodec_get_subtitle_rect_class(void)
347
{
348
    return &av_subtitle_rect_class;
349
}