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#pragma once
#include "globalincs/vmallocator.h"
#include "globalincs/pstypes.h"
#include "cfile/cfile.h"
#include "FFmpeg.h"
#include "FFmpegHeaders.h"
#include <memory>
namespace libs {
namespace ffmpeg {
/**
* @brief Stores a vector of bytes and an access position to treat it as file
*
*
*/
struct MemFileCursor {
const SCP_vector<uint8_t> snddata;
SCP_vector<uint8_t>::size_type cursor_pos;
MemFileCursor(const uint8_t* snddata, size_t snd_len);
MemFileCursor();
};
/**
* @brief Contains a FFmpeg context
*
* This should be used for making sure a FFmpeg context is always deallocated even if an exception is throws.
* createContext can be used for opening a specific file for FFmpeg decoding
*/
class FFmpegContext {
private:
AVFormatContext* m_ctx;
CFILE* m_file;
MemFileCursor m_memsound;
FFmpegContext(CFILE* file);
FFmpegContext(const uint8_t* snddata, size_t snd_len);
void prepare(void *opaque,
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
int64_t (*seek)(void *opaque, int64_t offset, int whence));
public:
~FFmpegContext();
FFmpegContext(const FFmpegContext&) = delete;
FFmpegContext& operator=(const FFmpegContext&) = delete;
inline AVFormatContext* ctx() { return m_ctx; }
static std::unique_ptr<FFmpegContext> createContext(CFILE* mediaFile);
static std::unique_ptr<FFmpegContext> createContextMem(const uint8_t* snddata, size_t snd_len);
static std::unique_ptr<FFmpegContext> createContext(const SCP_string& path, int dir_type);
};
}
}
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