FFmpeg coverage

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 %


/*
 * Copyright (c) 2001 Fabrice Bellard
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * Options definition for AVCodecContext.
 */

#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include <string.h>

FF_DISABLE_DEPRECATION_WARNINGS
#include "options_table.h"
FF_ENABLE_DEPRECATION_WARNINGS

static const char* context_to_name(void* ptr) {
    AVCodecContext *avc= ptr;

    if (avc && avc->codec)
        return avc->codec->name;
    else
        return "NULL";
}

static void *codec_child_next(void *obj, void *prev)
{
    AVCodecContext *s = obj;
    if (!prev && s->codec && s->codec->priv_class && s->priv_data)
        return s->priv_data;
    return NULL;
}

#if FF_API_CHILD_CLASS_NEXT
static const AVClass *codec_child_class_next(const AVClass *prev)
{
    void *iter = NULL;
    const AVCodec *c = NULL;

    /* find the codec that corresponds to prev */
    while (prev && (c = av_codec_iterate(&iter)))
        if (c->priv_class == prev)
            break;

    /* find next codec with priv options */
    while (c = av_codec_iterate(&iter))
        if (c->priv_class)
            return c->priv_class;
    return NULL;
}
#endif

static const AVClass *codec_child_class_iterate(void **iter)
{
    const AVCodec *c;
    /* find next codec with priv options */
    while (c = av_codec_iterate(iter))
        if (c->priv_class)
            return c->priv_class;
    return NULL;
}

static AVClassCategory get_category(void *ptr)
{
    AVCodecContext* avctx = ptr;
    if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
    else                                     return AV_CLASS_CATEGORY_ENCODER;
}

static const AVClass av_codec_context_class = {
    .class_name              = "AVCodecContext",
    .item_name               = context_to_name,
    .option                  = avcodec_options,
    .version                 = LIBAVUTIL_VERSION_INT,
    .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
    .child_next              = codec_child_next,
#if FF_API_CHILD_CLASS_NEXT
    .child_class_next        = codec_child_class_next,
#endif
    .child_class_iterate     = codec_child_class_iterate,
    .category                = AV_CLASS_CATEGORY_ENCODER,
    .get_category            = get_category,
};

static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
{
    int flags=0;
    memset(s, 0, sizeof(AVCodecContext));

    s->av_class = &av_codec_context_class;

    s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
    if (codec) {
        s->codec = codec;
        s->codec_id = codec->id;
    }

    if(s->codec_type == AVMEDIA_TYPE_AUDIO)
        flags= AV_OPT_FLAG_AUDIO_PARAM;
    else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
        flags= AV_OPT_FLAG_VIDEO_PARAM;
    else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
    av_opt_set_defaults2(s, flags, flags);

    s->time_base           = (AVRational){0,1};
    s->framerate           = (AVRational){ 0, 1 };
    s->pkt_timebase        = (AVRational){ 0, 1 };
    s->get_buffer2         = avcodec_default_get_buffer2;
    s->get_format          = avcodec_default_get_format;
    s->get_encode_buffer   = avcodec_default_get_encode_buffer;
    s->execute             = avcodec_default_execute;
    s->execute2            = avcodec_default_execute2;
    s->sample_aspect_ratio = (AVRational){0,1};
    s->pix_fmt             = AV_PIX_FMT_NONE;
    s->sw_pix_fmt          = AV_PIX_FMT_NONE;
    s->sample_fmt          = AV_SAMPLE_FMT_NONE;

    s->reordered_opaque    = AV_NOPTS_VALUE;
    if(codec && codec->priv_data_size){
        s->priv_data = av_mallocz(codec->priv_data_size);
        if (!s->priv_data)
            return AVERROR(ENOMEM);
        if(codec->priv_class){
            *(const AVClass**)s->priv_data = codec->priv_class;
            av_opt_set_defaults(s->priv_data);
        }
    }
    if (codec && codec->defaults) {
        int ret;
        const AVCodecDefault *d = codec->defaults;
        while (d->key) {
            ret = av_opt_set(s, d->key, d->value, 0);
            av_assert0(ret >= 0);
            d++;
        }
    }
    return 0;
}

#if FF_API_GET_CONTEXT_DEFAULTS
int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec)
{
    return init_context_defaults(s, codec);
}
#endif

AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
{
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

    if (!avctx)
        return NULL;

    if (init_context_defaults(avctx, codec) < 0) {
        av_free(avctx);
        return NULL;
    }

    return avctx;
}

void avcodec_free_context(AVCodecContext **pavctx)
{
    AVCodecContext *avctx = *pavctx;

    if (!avctx)
        return;

    avcodec_close(avctx);

    av_freep(&avctx->extradata);
    av_freep(&avctx->subtitle_header);
    av_freep(&avctx->intra_matrix);
    av_freep(&avctx->inter_matrix);
    av_freep(&avctx->rc_override);

    av_freep(pavctx);
}

#if FF_API_COPY_CONTEXT
static void copy_context_reset(AVCodecContext *avctx)
{
    int i;

    av_opt_free(avctx);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
    av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
    av_freep(&avctx->rc_override);
    av_freep(&avctx->intra_matrix);
    av_freep(&avctx->inter_matrix);
    av_freep(&avctx->extradata);
    av_freep(&avctx->subtitle_header);
    av_buffer_unref(&avctx->hw_frames_ctx);
    av_buffer_unref(&avctx->hw_device_ctx);
    for (i = 0; i < avctx->nb_coded_side_data; i++)
        av_freep(&avctx->coded_side_data[i].data);
    av_freep(&avctx->coded_side_data);
    avctx->subtitle_header_size = 0;
    avctx->nb_coded_side_data = 0;
    avctx->extradata_size = 0;
}

int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
{
    const AVCodec *orig_codec = dest->codec;
    uint8_t *orig_priv_data = dest->priv_data;

    if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
        av_log(dest, AV_LOG_ERROR,
               "Tried to copy AVCodecContext %p into already-initialized %p\n",
               src, dest);
        return AVERROR(EINVAL);
    }

    copy_context_reset(dest);

    memcpy(dest, src, sizeof(*dest));
    av_opt_copy(dest, src);

    dest->priv_data       = orig_priv_data;
    dest->codec           = orig_codec;

    if (orig_priv_data && src->codec && src->codec->priv_class &&
        dest->codec && dest->codec->priv_class)
        av_opt_copy(orig_priv_data, src->priv_data);


    /* set values specific to opened codecs back to their default state */
    dest->slice_offset    = NULL;
    dest->hwaccel         = NULL;
    dest->internal        = NULL;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
    dest->coded_frame     = NULL;
FF_ENABLE_DEPRECATION_WARNINGS
#endif

    /* reallocate values that should be allocated separately */
    dest->extradata       = NULL;
    dest->coded_side_data = NULL;
    dest->intra_matrix    = NULL;
    dest->inter_matrix    = NULL;
    dest->rc_override     = NULL;
    dest->subtitle_header = NULL;
    dest->hw_frames_ctx   = NULL;
    dest->hw_device_ctx   = NULL;
    dest->nb_coded_side_data = 0;

#define alloc_and_copy_or_fail(obj, size, pad) \
    if (src->obj && size > 0) { \
        dest->obj = av_malloc(size + pad); \
        if (!dest->obj) \
            goto fail; \
        memcpy(dest->obj, src->obj, size); \
        if (pad) \
            memset(((uint8_t *) dest->obj) + size, 0, pad); \
    }
    alloc_and_copy_or_fail(extradata,    src->extradata_size,
                           AV_INPUT_BUFFER_PADDING_SIZE);
    dest->extradata_size  = src->extradata_size;
    alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
    alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
    alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);
    alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
    av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
#undef alloc_and_copy_or_fail

    if (src->hw_frames_ctx) {
        dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
        if (!dest->hw_frames_ctx)
            goto fail;
    }

    return 0;

fail:
    copy_context_reset(dest);
    return AVERROR(ENOMEM);
}
#endif

const AVClass *avcodec_get_class(void)
{
    return &av_codec_context_class;
}

#if FF_API_GET_FRAME_CLASS
#define FOFFSET(x) offsetof(AVFrame,x)

static const AVOption frame_options[]={
{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{NULL},
};

static const AVClass av_frame_class = {
    .class_name              = "AVFrame",
    .item_name               = NULL,
    .option                  = frame_options,
    .version                 = LIBAVUTIL_VERSION_INT,
};

const AVClass *avcodec_get_frame_class(void)
{
    return &av_frame_class;
}
#endif

#define SROFFSET(x) offsetof(AVSubtitleRect,x)

static const AVOption subtitle_rect_options[]={
{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
{NULL},
};

static const AVClass av_subtitle_rect_class = {
    .class_name             = "AVSubtitleRect",
    .item_name              = NULL,
    .option                 = subtitle_rect_options,
    .version                = LIBAVUTIL_VERSION_INT,
};

const AVClass *avcodec_get_subtitle_rect_class(void)
{
    return &av_subtitle_rect_class;
}


Generated by: GCOVR (Version 4.2)

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
9			* License as published by the Free Software Foundation; either
10			* 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
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* 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,
97			.log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
98			.child_next = codec_child_next,
99			#if FF_API_CHILD_CLASS_NEXT
100			.child_class_next = codec_child_class_next,
101			#endif
102			.child_class_iterate = codec_child_class_iterate,
103			.category = AV_CLASS_CATEGORY_ENCODER,
104			.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;
122	✓✓	49385	else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
123		9817	flags= AV_OPT_FLAG_VIDEO_PARAM;
124	✓✓	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			}