GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/options.c Lines: 78 156 50.0 %
Date: 2021-04-19 06:27:07 Branches: 44 108 40.7 %

Line Branch Exec Source
1
/*
2
 * Copyright (c) 2001 Fabrice Bellard
3
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4
 *
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 * 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
10
 * version 2.1 of the License, or (at your option) any later version.
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 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * 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
4329
static const char* context_to_name(void* ptr) {
40
4329
    AVCodecContext *avc= ptr;
41
42

4329
    if (avc && avc->codec)
43
3910
        return avc->codec->name;
44
    else
45
419
        return "NULL";
46
}
47
48
41
static void *codec_child_next(void *obj, void *prev)
49
{
50
41
    AVCodecContext *s = obj;
51


41
    if (!prev && s->codec && s->codec->priv_class && s->priv_data)
52
21
        return s->priv_data;
53
20
    return NULL;
54
}
55
56
#if FF_API_CHILD_CLASS_NEXT
57
static const AVClass *codec_child_class_next(const AVClass *prev)
58
{
59
    void *iter = NULL;
60
    const AVCodec *c = NULL;
61
62
    /* find the codec that corresponds to prev */
63
    while (prev && (c = av_codec_iterate(&iter)))
64
        if (c->priv_class == prev)
65
            break;
66
67
    /* find next codec with priv options */
68
    while (c = av_codec_iterate(&iter))
69
        if (c->priv_class)
70
            return c->priv_class;
71
    return NULL;
72
}
73
#endif
74
75
10220282
static const AVClass *codec_child_class_iterate(void **iter)
76
{
77
    const AVCodec *c;
78
    /* find next codec with priv options */
79
51318174
    while (c = av_codec_iterate(iter))
80
51239616
        if (c->priv_class)
81
10141724
            return c->priv_class;
82
78558
    return NULL;
83
}
84
85
4329
static AVClassCategory get_category(void *ptr)
86
{
87
4329
    AVCodecContext* avctx = ptr;
88

4329
    if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
89
535
    else                                     return AV_CLASS_CATEGORY_ENCODER;
90
}
91
92
static const AVClass av_codec_context_class = {
93
    .class_name              = "AVCodecContext",
94
    .item_name               = context_to_name,
95
    .option                  = avcodec_options,
96
    .version                 = LIBAVUTIL_VERSION_INT,
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    .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
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    .child_next              = codec_child_next,
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#if FF_API_CHILD_CLASS_NEXT
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    .child_class_next        = codec_child_class_next,
101
#endif
102
    .child_class_iterate     = codec_child_class_iterate,
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    .category                = AV_CLASS_CATEGORY_ENCODER,
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    .get_category            = get_category,
105
};
106
107
52019
static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
108
{
109
52019
    int flags=0;
110
52019
    memset(s, 0, sizeof(AVCodecContext));
111
112
52019
    s->av_class = &av_codec_context_class;
113
114
52019
    s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
115
52019
    if (codec) {
116
12542
        s->codec = codec;
117
12542
        s->codec_id = codec->id;
118
    }
119
120
52019
    if(s->codec_type == AVMEDIA_TYPE_AUDIO)
121
2634
        flags= AV_OPT_FLAG_AUDIO_PARAM;
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49385
    else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
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9817
        flags= AV_OPT_FLAG_VIDEO_PARAM;
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39568
    else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
125
91
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
126
52019
    av_opt_set_defaults2(s, flags, flags);
127
128
52019
    s->time_base           = (AVRational){0,1};
129
52019
    s->framerate           = (AVRational){ 0, 1 };
130
52019
    s->pkt_timebase        = (AVRational){ 0, 1 };
131
52019
    s->get_buffer2         = avcodec_default_get_buffer2;
132
52019
    s->get_format          = avcodec_default_get_format;
133
52019
    s->get_encode_buffer   = avcodec_default_get_encode_buffer;
134
52019
    s->execute             = avcodec_default_execute;
135
52019
    s->execute2            = avcodec_default_execute2;
136
52019
    s->sample_aspect_ratio = (AVRational){0,1};
137
52019
    s->pix_fmt             = AV_PIX_FMT_NONE;
138
52019
    s->sw_pix_fmt          = AV_PIX_FMT_NONE;
139
52019
    s->sample_fmt          = AV_SAMPLE_FMT_NONE;
140
141
52019
    s->reordered_opaque    = AV_NOPTS_VALUE;
142

52019
    if(codec && codec->priv_data_size){
143
7226
        s->priv_data = av_mallocz(codec->priv_data_size);
144
7226
        if (!s->priv_data)
145
            return AVERROR(ENOMEM);
146
7226
        if(codec->priv_class){
147
2390
            *(const AVClass**)s->priv_data = codec->priv_class;
148
2390
            av_opt_set_defaults(s->priv_data);
149
        }
150
    }
151

52019
    if (codec && codec->defaults) {
152
        int ret;
153
189
        const AVCodecDefault *d = codec->defaults;
154
378
        while (d->key) {
155
189
            ret = av_opt_set(s, d->key, d->value, 0);
156
189
            av_assert0(ret >= 0);
157
189
            d++;
158
        }
159
    }
160
52019
    return 0;
161
}
162
163
#if FF_API_GET_CONTEXT_DEFAULTS
164
int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec)
165
{
166
    return init_context_defaults(s, codec);
167
}
168
#endif
169
170
52019
AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
171
{
172
52019
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
173
174
52019
    if (!avctx)
175
        return NULL;
176
177
52019
    if (init_context_defaults(avctx, codec) < 0) {
178
        av_free(avctx);
179
        return NULL;
180
    }
181
182
52019
    return avctx;
183
}
184
185
51890
void avcodec_free_context(AVCodecContext **pavctx)
186
{
187
51890
    AVCodecContext *avctx = *pavctx;
188
189
51890
    if (!avctx)
190
3
        return;
191
192
51887
    avcodec_close(avctx);
193
194
51887
    av_freep(&avctx->extradata);
195
51887
    av_freep(&avctx->subtitle_header);
196
51887
    av_freep(&avctx->intra_matrix);
197
51887
    av_freep(&avctx->inter_matrix);
198
51887
    av_freep(&avctx->rc_override);
199
200
51887
    av_freep(pavctx);
201
}
202
203
#if FF_API_COPY_CONTEXT
204
static void copy_context_reset(AVCodecContext *avctx)
205
{
206
    int i;
207
208
    av_opt_free(avctx);
209
#if FF_API_CODED_FRAME
210
FF_DISABLE_DEPRECATION_WARNINGS
211
    av_frame_free(&avctx->coded_frame);
212
FF_ENABLE_DEPRECATION_WARNINGS
213
#endif
214
    av_freep(&avctx->rc_override);
215
    av_freep(&avctx->intra_matrix);
216
    av_freep(&avctx->inter_matrix);
217
    av_freep(&avctx->extradata);
218
    av_freep(&avctx->subtitle_header);
219
    av_buffer_unref(&avctx->hw_frames_ctx);
220
    av_buffer_unref(&avctx->hw_device_ctx);
221
    for (i = 0; i < avctx->nb_coded_side_data; i++)
222
        av_freep(&avctx->coded_side_data[i].data);
223
    av_freep(&avctx->coded_side_data);
224
    avctx->subtitle_header_size = 0;
225
    avctx->nb_coded_side_data = 0;
226
    avctx->extradata_size = 0;
227
}
228
229
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
230
{
231
    const AVCodec *orig_codec = dest->codec;
232
    uint8_t *orig_priv_data = dest->priv_data;
233
234
    if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
235
        av_log(dest, AV_LOG_ERROR,
236
               "Tried to copy AVCodecContext %p into already-initialized %p\n",
237
               src, dest);
238
        return AVERROR(EINVAL);
239
    }
240
241
    copy_context_reset(dest);
242
243
    memcpy(dest, src, sizeof(*dest));
244
    av_opt_copy(dest, src);
245
246
    dest->priv_data       = orig_priv_data;
247
    dest->codec           = orig_codec;
248
249
    if (orig_priv_data && src->codec && src->codec->priv_class &&
250
        dest->codec && dest->codec->priv_class)
251
        av_opt_copy(orig_priv_data, src->priv_data);
252
253
254
    /* set values specific to opened codecs back to their default state */
255
    dest->slice_offset    = NULL;
256
    dest->hwaccel         = NULL;
257
    dest->internal        = NULL;
258
#if FF_API_CODED_FRAME
259
FF_DISABLE_DEPRECATION_WARNINGS
260
    dest->coded_frame     = NULL;
261
FF_ENABLE_DEPRECATION_WARNINGS
262
#endif
263
264
    /* reallocate values that should be allocated separately */
265
    dest->extradata       = NULL;
266
    dest->coded_side_data = NULL;
267
    dest->intra_matrix    = NULL;
268
    dest->inter_matrix    = NULL;
269
    dest->rc_override     = NULL;
270
    dest->subtitle_header = NULL;
271
    dest->hw_frames_ctx   = NULL;
272
    dest->hw_device_ctx   = NULL;
273
    dest->nb_coded_side_data = 0;
274
275
#define alloc_and_copy_or_fail(obj, size, pad) \
276
    if (src->obj && size > 0) { \
277
        dest->obj = av_malloc(size + pad); \
278
        if (!dest->obj) \
279
            goto fail; \
280
        memcpy(dest->obj, src->obj, size); \
281
        if (pad) \
282
            memset(((uint8_t *) dest->obj) + size, 0, pad); \
283
    }
284
    alloc_and_copy_or_fail(extradata,    src->extradata_size,
285
                           AV_INPUT_BUFFER_PADDING_SIZE);
286
    dest->extradata_size  = src->extradata_size;
287
    alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
288
    alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
289
    alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);
290
    alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
291
    av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
292
#undef alloc_and_copy_or_fail
293
294
    if (src->hw_frames_ctx) {
295
        dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
296
        if (!dest->hw_frames_ctx)
297
            goto fail;
298
    }
299
300
    return 0;
301
302
fail:
303
    copy_context_reset(dest);
304
    return AVERROR(ENOMEM);
305
}
306
#endif
307
308
104403
const AVClass *avcodec_get_class(void)
309
{
310
104403
    return &av_codec_context_class;
311
}
312
313
#if FF_API_GET_FRAME_CLASS
314
#define FOFFSET(x) offsetof(AVFrame,x)
315
316
static const AVOption frame_options[]={
317
{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
318
{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
319
{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
320
{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
321
{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
322
{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
323
{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
324
{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
325
{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
326
{NULL},
327
};
328
329
static const AVClass av_frame_class = {
330
    .class_name              = "AVFrame",
331
    .item_name               = NULL,
332
    .option                  = frame_options,
333
    .version                 = LIBAVUTIL_VERSION_INT,
334
};
335
336
const AVClass *avcodec_get_frame_class(void)
337
{
338
    return &av_frame_class;
339
}
340
#endif
341
342
#define SROFFSET(x) offsetof(AVSubtitleRect,x)
343
344
static const AVOption subtitle_rect_options[]={
345
{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
346
{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
347
{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
348
{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
349
{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
350
{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
351
{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
352
{NULL},
353
};
354
355
static const AVClass av_subtitle_rect_class = {
356
    .class_name             = "AVSubtitleRect",
357
    .item_name              = NULL,
358
    .option                 = subtitle_rect_options,
359
    .version                = LIBAVUTIL_VERSION_INT,
360
};
361
362
const AVClass *avcodec_get_subtitle_rect_class(void)
363
{
364
    return &av_subtitle_rect_class;
365
}