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#include "ffmpeg_raii.h"
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/dict.h>
#include <libavutil/frame.h>
#include <libswscale/swscale.h>
}
using namespace std;
// AVFormatContext
void avformat_close_input_unique::operator() (AVFormatContext *format_ctx) const
{
avformat_close_input(&format_ctx);
}
AVFormatContextWithCloser avformat_open_input_unique(
const char *pathname, const AVInputFormat *fmt,
AVDictionary **options)
{
return avformat_open_input_unique(pathname, fmt, options, AVIOInterruptCB{ nullptr, nullptr });
}
AVFormatContextWithCloser avformat_open_input_unique(
const char *pathname, const AVInputFormat *fmt,
AVDictionary **options,
const AVIOInterruptCB &interrupt_cb)
{
AVFormatContext *format_ctx = avformat_alloc_context();
format_ctx->interrupt_callback = interrupt_cb;
#ifdef ff_const59
if (avformat_open_input(&format_ctx, pathname, const_cast<ff_const59 AVInputFormat *>(fmt), options) != 0) {
#else
if (avformat_open_input(&format_ctx, pathname, fmt, options) != 0) {
#endif
format_ctx = nullptr;
}
return AVFormatContextWithCloser(format_ctx);
}
AVFormatContextWithCloser avformat_open_input_unique(
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
void *opaque, const AVInputFormat *fmt, AVDictionary **options,
const AVIOInterruptCB &interrupt_cb)
{
AVFormatContext *format_ctx = avformat_alloc_context();
format_ctx->interrupt_callback = interrupt_cb;
constexpr size_t buf_size = 4096;
unsigned char *buf = (unsigned char *)av_malloc(buf_size);
format_ctx->pb = avio_alloc_context(buf, buf_size, /*write_flag=*/false, opaque,
read_packet, /*write_packet=*/nullptr, /*seek=*/nullptr);
#ifdef ff_const59
if (avformat_open_input(&format_ctx, "", const_cast<ff_const59 AVInputFormat *>(fmt), options) != 0) {
#else
if (avformat_open_input(&format_ctx, "", fmt, options) != 0) {
#endif
format_ctx = nullptr;
}
return AVFormatContextWithCloser(format_ctx);
}
// AVCodecContext
void avcodec_free_context_unique::operator() (AVCodecContext *codec_ctx) const
{
avcodec_free_context(&codec_ctx);
}
AVCodecContextWithDeleter avcodec_alloc_context3_unique(const AVCodec *codec)
{
return AVCodecContextWithDeleter(avcodec_alloc_context3(codec));
}
// AVCodecParameters
void avcodec_parameters_free_unique::operator() (AVCodecParameters *codec_par) const
{
avcodec_parameters_free(&codec_par);
}
// AVFrame
void av_frame_free_unique::operator() (AVFrame *frame) const
{
av_frame_free(&frame);
}
AVFrameWithDeleter av_frame_alloc_unique()
{
return AVFrameWithDeleter(av_frame_alloc());
}
// AVPacket
void av_packet_free_unique::operator() (AVPacket *packet) const
{
av_packet_unref(packet);
}
AVPacketWithDeleter av_packet_alloc_unique()
{
return AVPacketWithDeleter(av_packet_alloc());
}
// SwsContext
void sws_free_context_unique::operator() (SwsContext *context) const
{
sws_freeContext(context);
}
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