351 lines
11 KiB
C
Executable File
351 lines
11 KiB
C
Executable File
/*
|
|
* 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 && 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)
|
|
{
|
|
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;
|
|
}
|
|
|
|
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,
|
|
};
|
|
|
|
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->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){
|
|
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;
|
|
}
|
|
|
|
#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;
|
|
}
|
|
|
|
#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;
|
|
}
|