[deb_ffmpeg.git] / ffmpeg / libavcodec / options.c

/*
 * 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/mem.h"
#include "libavutil/opt.h"
#include <float.h>              /* FLT_MIN, FLT_MAX */
#include <string.h>

#include "options_table.h"

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

    if(avc && avc->codec && avc->codec->name)
        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;
}

static const AVClass *codec_child_class_next(const AVClass *prev)
{
    AVCodec *c = NULL;

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

    /* find next codec with priv options */
    while (c = av_codec_next(c))
        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,
    .child_class_next        = codec_child_class_next,
    .category                = AV_CLASS_CATEGORY_ENCODER,
    .get_category            = get_category,
};

int avcodec_get_context_defaults3(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_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->get_buffer2         = avcodec_default_get_buffer2;
    s->get_format          = avcodec_default_get_format;
    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->sample_fmt          = AV_SAMPLE_FMT_NONE;
    s->timecode_frame_start = -1;

    s->reordered_opaque    = AV_NOPTS_VALUE;
    if(codec && codec->priv_data_size){
        if(!s->priv_data){
            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;
}

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

    if (!avctx)
        return NULL;

    if(avcodec_get_context_defaults3(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(pavctx);
}

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);
    }

    av_opt_free(dest);

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

    dest->priv_data       = orig_priv_data;

    if (orig_priv_data)
        av_opt_copy(orig_priv_data, src->priv_data);

    dest->codec           = orig_codec;

    /* set values specific to opened codecs back to their default state */
    dest->slice_offset    = NULL;
    dest->hwaccel         = NULL;
    dest->internal        = NULL;

    /* reallocate values that should be allocated separately */
    dest->rc_eq           = NULL;
    dest->extradata       = NULL;
    dest->intra_matrix    = NULL;
    dest->inter_matrix    = NULL;
    dest->rc_override     = NULL;
    dest->subtitle_header = NULL;
    if (src->rc_eq) {
        dest->rc_eq = av_strdup(src->rc_eq);
        if (!dest->rc_eq)
            return AVERROR(ENOMEM);
    }

#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,
                           FF_INPUT_BUFFER_PADDING_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

    return 0;

fail:
    av_freep(&dest->rc_override);
    av_freep(&dest->intra_matrix);
    av_freep(&dest->inter_matrix);
    av_freep(&dest->extradata);
    av_freep(&dest->rc_eq);
    return AVERROR(ENOMEM);
}

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

#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;
}
Commit	Line	Data
2ba45a60 DM	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/mem.h"
	31	#include "libavutil/opt.h"
	32	#include <float.h> /* FLT_MIN, FLT_MAX */
	33	#include <string.h>
	34
	35	#include "options_table.h"
	36
	37	static const char* context_to_name(void* ptr) {
	38	AVCodecContext *avc= ptr;
	39
	40	if(avc && avc->codec && avc->codec->name)
	41	return avc->codec->name;
	42	else
	43	return "NULL";
	44	}
	45
	46	static void codec_child_next(void obj, void *prev)
	47	{
	48	AVCodecContext *s = obj;
	49	if (!prev && s->codec && s->codec->priv_class && s->priv_data)
	50	return s->priv_data;
	51	return NULL;
	52	}
	53
	54	static const AVClass codec_child_class_next(const AVClass prev)
	55	{
	56	AVCodec *c = NULL;
	57
	58	/* find the codec that corresponds to prev */
	59	while (prev && (c = av_codec_next(c)))
	60	if (c->priv_class == prev)
	61	break;
	62
	63	/* find next codec with priv options */
	64	while (c = av_codec_next(c))
65	if (c->priv_class)
66	return c->priv_class;
67	return NULL;
68	}
69
70	static AVClassCategory get_category(void *ptr)
71	{
72	AVCodecContext* avctx = ptr;
73	if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
74	else return AV_CLASS_CATEGORY_ENCODER;
75	}
76
77	static const AVClass av_codec_context_class = {
78	.class_name = "AVCodecContext",
79	.item_name = context_to_name,
80	.option = avcodec_options,
81	.version = LIBAVUTIL_VERSION_INT,
82	.log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
83	.child_next = codec_child_next,
84	.child_class_next = codec_child_class_next,
85	.category = AV_CLASS_CATEGORY_ENCODER,
86	.get_category = get_category,
87	};
88
89	int avcodec_get_context_defaults3(AVCodecContext s, const AVCodec codec)
90	{
91	int flags=0;
92	memset(s, 0, sizeof(AVCodecContext));
93
94	s->av_class = &av_codec_context_class;
95
96	s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
97	if (codec)
98	s->codec_id = codec->id;
99
100	if(s->codec_type == AVMEDIA_TYPE_AUDIO)
101	flags= AV_OPT_FLAG_AUDIO_PARAM;
102	else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
103	flags= AV_OPT_FLAG_VIDEO_PARAM;
104	else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
105	flags= AV_OPT_FLAG_SUBTITLE_PARAM;
106	av_opt_set_defaults2(s, flags, flags);
107
108	s->time_base = (AVRational){0,1};
109	s->get_buffer2 = avcodec_default_get_buffer2;
110	s->get_format = avcodec_default_get_format;
111	s->execute = avcodec_default_execute;
112	s->execute2 = avcodec_default_execute2;
113	s->sample_aspect_ratio = (AVRational){0,1};
114	s->pix_fmt = AV_PIX_FMT_NONE;
115	s->sample_fmt = AV_SAMPLE_FMT_NONE;
116	s->timecode_frame_start = -1;
117
118	s->reordered_opaque = AV_NOPTS_VALUE;
119	if(codec && codec->priv_data_size){
120	if(!s->priv_data){
121	s->priv_data= av_mallocz(codec->priv_data_size);
122	if (!s->priv_data) {
123	return AVERROR(ENOMEM);
124	}
125	}
126	if(codec->priv_class){
127	(const AVClass*)s->priv_data = codec->priv_class;
128	av_opt_set_defaults(s->priv_data);
129	}
130	}
131	if (codec && codec->defaults) {
132	int ret;
133	const AVCodecDefault *d = codec->defaults;
134	while (d->key) {
135	ret = av_opt_set(s, d->key, d->value, 0);
136	av_assert0(ret >= 0);
137	d++;
138	}
139	}
140	return 0;
141	}
142
143	AVCodecContext avcodec_alloc_context3(const AVCodec codec)
144	{
145	AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
146
147	if (!avctx)
148	return NULL;
149
150	if(avcodec_get_context_defaults3(avctx, codec) < 0){
151	av_free(avctx);
152	return NULL;
153	}
154
155	return avctx;
156	}
157
158	void avcodec_free_context(AVCodecContext **pavctx)
159	{
160	AVCodecContext avctx = pavctx;
161
162	if (!avctx)
163	return;
164
165	avcodec_close(avctx);
166
167	av_freep(&avctx->extradata);
168	av_freep(&avctx->subtitle_header);
169
170	av_freep(pavctx);
171	}
172
173	int avcodec_copy_context(AVCodecContext dest, const AVCodecContext src)
174	{
175	const AVCodec *orig_codec = dest->codec;
176	uint8_t *orig_priv_data = dest->priv_data;
177
178	if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
179	av_log(dest, AV_LOG_ERROR,
180	"Tried to copy AVCodecContext %p into already-initialized %p\n",
181	src, dest);
182	return AVERROR(EINVAL);
183	}
184
185	av_opt_free(dest);
186
187	memcpy(dest, src, sizeof(*dest));
188
189	dest->priv_data = orig_priv_data;
190
191	if (orig_priv_data)
192	av_opt_copy(orig_priv_data, src->priv_data);
193
194	dest->codec = orig_codec;
195
196	/* set values specific to opened codecs back to their default state */
197	dest->slice_offset = NULL;
198	dest->hwaccel = NULL;
199	dest->internal = NULL;
200
201	/* reallocate values that should be allocated separately */
202	dest->rc_eq = NULL;
203	dest->extradata = NULL;
204	dest->intra_matrix = NULL;
205	dest->inter_matrix = NULL;
206	dest->rc_override = NULL;
207	dest->subtitle_header = NULL;
208	if (src->rc_eq) {
209	dest->rc_eq = av_strdup(src->rc_eq);
210	if (!dest->rc_eq)
211	return AVERROR(ENOMEM);
212	}
213
214	#define alloc_and_copy_or_fail(obj, size, pad) \
215	if (src->obj && size > 0) { \
216	dest->obj = av_malloc(size + pad); \
217	if (!dest->obj) \
218	goto fail; \
219	memcpy(dest->obj, src->obj, size); \
220	if (pad) \
221	memset(((uint8_t *) dest->obj) + size, 0, pad); \
222	}
223	alloc_and_copy_or_fail(extradata, src->extradata_size,
224	FF_INPUT_BUFFER_PADDING_SIZE);
225	alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
226	alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
227	alloc_and_copy_or_fail(rc_override, src->rc_override_count * sizeof(*src->rc_override), 0);
228	alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
229	av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
230	#undef alloc_and_copy_or_fail
231
232	return 0;
233
234	fail:
235	av_freep(&dest->rc_override);
236	av_freep(&dest->intra_matrix);
237	av_freep(&dest->inter_matrix);
238	av_freep(&dest->extradata);
239	av_freep(&dest->rc_eq);
240	return AVERROR(ENOMEM);
241	}
242
243	const AVClass *avcodec_get_class(void)
244	{
245	return &av_codec_context_class;
246	}
247
248	#define FOFFSET(x) offsetof(AVFrame,x)
249
250	static const AVOption frame_options[]={
251	{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
252	{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
253	{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
254	{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
255	{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
256	{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
257	{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
258	{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
259	{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
260	{NULL},
261	};
262
263	static const AVClass av_frame_class = {
264	.class_name = "AVFrame",
265	.item_name = NULL,
266	.option = frame_options,
267	.version = LIBAVUTIL_VERSION_INT,
268	};
269
270	const AVClass *avcodec_get_frame_class(void)
271	{
272	return &av_frame_class;
273	}
274
275	#define SROFFSET(x) offsetof(AVSubtitleRect,x)
276
277	static const AVOption subtitle_rect_options[]={
278	{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
279	{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
280	{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
281	{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
282	{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
283	{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
284	{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
285	{NULL},
286	};
287
288	static const AVClass av_subtitle_rect_class = {
289	.class_name = "AVSubtitleRect",
290	.item_name = NULL,
291	.option = subtitle_rect_options,
292	.version = LIBAVUTIL_VERSION_INT,
293	};
294
295	const AVClass *avcodec_get_subtitle_rect_class(void)
296	{
297	return &av_subtitle_rect_class;
298	}