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audacity/src/FFmpeg.h
benjamin.drung@gmail.com dea3dfb30e FFmpeg: Allow suffixes to the libavformat library filename. 
The filechooser should also show libavformat-ffmpeg.so* files when "Only
libavformat.so" is selected as filter.
2014-06-10 21:38:22 +00:00

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/**********************************************************************
Audacity: A Digital Audio Editor
FFmpeg.h
Audacity(R) is copyright (c) 1999-2009 Audacity Team.
License: GPL v2. See License.txt.
******************************************************************//**
Describes shared object that is used to access FFmpeg libraries.
*//*******************************************************************/
#if !defined(__AUDACITY_FFMPEG__)
#define __AUDACITY_FFMPEG__
// TODO: Determine whether the libav* headers come from the FFmpeg or libav
// project and set IS_FFMPEG_PROJECT depending on it.
#define IS_FFMPEG_PROJECT 1
/* FFmpeg is written in C99. It uses many types from stdint.h. Because we are
* compiling this using a C++ compiler we have to put it in extern "C".
* __STDC_CONSTANT_MACROS is defined to make <stdint.h> behave like it
* is actually being compiled with a C99 compiler.
*
* The symptoms are that INT64_C is not a valid type, which tends to break
* somewhere down in the implementations using this file */
/* In order to be able to compile this file when ffmpeg is not available we
* need access to the value of USE_FFMPEG, which means config*.h needs to come
* in before this file. The suggest way to achieve this is by including
* Audacity.h */
#if defined(USE_FFMPEG)
extern "C" {
// Include errno.h before the ffmpeg includes since they depend on
// knowing the value of EINVAL...see bottom of avcodec.h. Not doing
// so will produce positive error returns when they should be < 0.
#include <errno.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/fifo.h>
#include <libavutil/mathematics.h>
#if defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 45, 101)
#define av_frame_alloc avcodec_alloc_frame
#define av_frame_free avcodec_free_frame
#endif
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 59, 100)
inline void avcodec_free_frame(AVFrame **frame) {
av_free(*frame);
}
#endif
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 51, 100)
#define AVCodecID CodecID
#define AV_CODEC_ID_AAC CODEC_ID_AAC
#define AV_CODEC_ID_AC CODEC_ID_AC
#define AV_CODEC_ID_AC3 CODEC_ID_AC3
#define AV_CODEC_ID_ADPCM CODEC_ID_ADPCM
#define AV_CODEC_ID_ADPCM_CT CODEC_ID_ADPCM_CT
#define AV_CODEC_ID_ADPCM_G726 CODEC_ID_ADPCM_G726
#define AV_CODEC_ID_ADPCM_IMA_QT CODEC_ID_ADPCM_IMA_QT
#define AV_CODEC_ID_ADPCM_IMA_WAV CODEC_ID_ADPCM_IMA_WAV
#define AV_CODEC_ID_ADPCM_MS CODEC_ID_ADPCM_MS
#define AV_CODEC_ID_ADPCM_SWF CODEC_ID_ADPCM_SWF
#define AV_CODEC_ID_ADPCM_YAMAHA CODEC_ID_ADPCM_YAMAHA
#define AV_CODEC_ID_ALAC CODEC_ID_ALAC
#define AV_CODEC_ID_AMR CODEC_ID_AMR
#define AV_CODEC_ID_AMR_NB CODEC_ID_AMR_NB
#define AV_CODEC_ID_AMR_WB CODEC_ID_AMR_WB
#define AV_CODEC_ID_ATRAC CODEC_ID_ATRAC
#define AV_CODEC_ID_ATRAC3 CODEC_ID_ATRAC3
#define AV_CODEC_ID_DTS CODEC_ID_DTS
#define AV_CODEC_ID_DVAUDIO CODEC_ID_DVAUDIO
#define AV_CODEC_ID_FLAC CODEC_ID_FLAC
#define AV_CODEC_ID_GSM CODEC_ID_GSM
#define AV_CODEC_ID_GSM_MS CODEC_ID_GSM_MS
#define AV_CODEC_ID_IMC CODEC_ID_IMC
#define AV_CODEC_ID_MACE CODEC_ID_MACE
#define AV_CODEC_ID_MACE3 CODEC_ID_MACE3
#define AV_CODEC_ID_MACE6 CODEC_ID_MACE6
#define AV_CODEC_ID_MP CODEC_ID_MP
#define AV_CODEC_ID_MP2 CODEC_ID_MP2
#define AV_CODEC_ID_MP3 CODEC_ID_MP3
#define AV_CODEC_ID_NELLYMOSER CODEC_ID_NELLYMOSER
#define AV_CODEC_ID_NONE CODEC_ID_NONE
#define AV_CODEC_ID_PCM CODEC_ID_PCM
#define AV_CODEC_ID_PCM_ALAW CODEC_ID_PCM_ALAW
#define AV_CODEC_ID_PCM_MULAW CODEC_ID_PCM_MULAW
#define AV_CODEC_ID_PCM_S16BE CODEC_ID_PCM_S16BE
#define AV_CODEC_ID_PCM_S16LE CODEC_ID_PCM_S16LE
#define AV_CODEC_ID_PCM_S24BE CODEC_ID_PCM_S24BE
#define AV_CODEC_ID_PCM_S24LE CODEC_ID_PCM_S24LE
#define AV_CODEC_ID_PCM_S32BE CODEC_ID_PCM_S32BE
#define AV_CODEC_ID_PCM_S32LE CODEC_ID_PCM_S32LE
#define AV_CODEC_ID_PCM_S8 CODEC_ID_PCM_S8
#define AV_CODEC_ID_PCM_U8 CODEC_ID_PCM_U8
#define AV_CODEC_ID_QCELP CODEC_ID_QCELP
#define AV_CODEC_ID_QDM CODEC_ID_QDM
#define AV_CODEC_ID_QDM2 CODEC_ID_QDM2
#define AV_CODEC_ID_ROQ CODEC_ID_ROQ
#define AV_CODEC_ID_ROQ_DPCM CODEC_ID_ROQ_DPCM
#define AV_CODEC_ID_SONIC CODEC_ID_SONIC
#define AV_CODEC_ID_SONIC_LS CODEC_ID_SONIC_LS
#define AV_CODEC_ID_TRUESPEECH CODEC_ID_TRUESPEECH
#define AV_CODEC_ID_VORBIS CODEC_ID_VORBIS
#define AV_CODEC_ID_VOXWARE CODEC_ID_VOXWARE
#define AV_CODEC_ID_WMAPRO CODEC_ID_WMAPRO
#define AV_CODEC_ID_WMAV CODEC_ID_WMAV
#define AV_CODEC_ID_WMAV1 CODEC_ID_WMAV1
#define AV_CODEC_ID_WMAV2 CODEC_ID_WMAV2
#define AV_CODEC_ID_WMAVOICE CODEC_ID_WMAVOICE
#endif
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 8, 100)
inline bool av_codec_is_encoder(AVCodec *codec) {
return codec != NULL && (codec->encode != NULL || codec->encode2 != NULL);
}
#endif
#endif
}
#endif
#include "Audacity.h"
/* rather earlier than normal, but pulls in config*.h and other program stuff
* we need for the next bit */
#include <wx/string.h>
#include <wx/dynlib.h>
#include <wx/log.h> // for wxLogNull
#include <wx/msgdlg.h> // for wxMessageBox
#include <wx/utils.h>
#include "widgets/LinkingHtmlWindow.h"
#include "FileDialog.h"
#include "ShuttleGui.h"
#include "Prefs.h"
#include <wx/checkbox.h>
#include <wx/textctrl.h>
// needed for sampleCount
#include "Sequence.h"
#include "Experimental.h"
// if you needed them, any other audacity header files would go here
/// Callback function to catch FFmpeg log messages.
void av_log_wx_callback(void* ptr, int level, const char* fmt, va_list vl);
//----------------------------------------------------------------------------
// Get FFmpeg library version
//----------------------------------------------------------------------------
wxString GetFFmpegVersion(wxWindow *parent);
/* from here on in, this stuff only applies when ffmpeg is available */
#if defined(USE_FFMPEG)
//----------------------------------------------------------------------------
// Attempt to load and enable/disable FFmpeg at startup
//----------------------------------------------------------------------------
void FFmpegStartup();
bool LoadFFmpeg(bool showerror);
/// If Audacity failed to load libav*, this dialog
/// shows up and tells user about that. It will pop-up
/// again and again until it is disabled.
class FFmpegNotFoundDialog : public wxDialog
{
public:
FFmpegNotFoundDialog(wxWindow *parent)
: wxDialog(parent, wxID_ANY, wxString(_("FFmpeg not found")))
{
ShuttleGui S(this, eIsCreating);
PopulateOrExchange(S);
}
void PopulateOrExchange(ShuttleGui & S)
{
wxString text;
S.SetBorder(10);
S.StartVerticalLay(true);
{
S.AddFixedText(_(
"Audacity attempted to use FFmpeg to import an audio file,\n\
but the libraries were not found.\n\n\
To use FFmpeg import, go to Preferences > Libraries\n\
to download or locate the FFmpeg libraries."
));
int dontShowDlg = 0;
gPrefs->Read(wxT("/FFmpeg/NotFoundDontShow"),&dontShowDlg,0);
mDontShow = S.AddCheckBox(_("Do not show this warning again"),dontShowDlg ? wxT("true") : wxT("false"));
S.AddStandardButtons(eOkButton);
}
S.EndVerticalLay();
Layout();
Fit();
SetMinSize(GetSize());
Center();
return;
}
void OnOk(wxCommandEvent & WXUNUSED(event))
{
if (mDontShow->GetValue())
{
gPrefs->Write(wxT("/FFmpeg/NotFoundDontShow"),1);
gPrefs->Flush();
}
this->EndModal(0);
}
private:
wxCheckBox *mDontShow;
DECLARE_EVENT_TABLE()
};
/// Manages liabv* libraries - loads/unloads libraries, imports symbols.
/// Only one instance of this class should exist at each given moment.
/// function definitions are taken from FFmpeg headers manually,
/// eventually (at next major FFmpeg version change) we'll have to review
/// them and update if necessary.
class FFmpegLibs
{
public:
FFmpegLibs();
~FFmpegLibs();
///! Finds libav* libraries
///\return true if found, false if not found
bool FindLibs(wxWindow *parent);
///! Loads libav* libraries
///\param showerr - controls whether or not to show an error dialog if libraries cannot be loaded
///\return true if loaded, false if not loaded
bool LoadLibs(wxWindow *parent, bool showerr);
///! Checks if libraries are loaded
///\return true if libraries are loaded, false otherwise
bool ValidLibsLoaded();
///! Initializes the libraries. Call after LoadLibs (when ValidLibsLoaded returns true)
///\param libpath_codec - full file path to the libavformat library
///\param showerr - controls whether or not to show an error dialog if libraries cannot be loaded
///\return true if initialization completed without errors, false otherwise
/// do not call (it is called by FindLibs automatically)
bool InitLibs(wxString libpath_codec, bool showerr);
///! Frees (unloads) loaded libraries
void FreeLibs();
///! Returns library version as string
///\return libavformat library version or empty string?
wxString GetLibraryVersion()
{
return wxString::Format(wxT("F(%s),C(%s),U(%s)"),mAVFormatVersion.c_str(),mAVCodecVersion.c_str(),mAVUtilVersion.c_str());
}
#if defined(__WXMSW__)
/* Library names and file filters for Windows only */
wxString GetLibraryTypeString()
{
/* i18n-hint: do not translate avformat. Preserve the computer gibberish.*/
return _("Only avformat.dll|*avformat*.dll|Dynamically Linked Libraries (*.dll)|*.dll|All Files (*.*)|*");
}
wxString GetLibAVFormatPath()
{
wxRegKey reg(wxT("HKEY_LOCAL_MACHINE\\Software\\FFmpeg for Audacity"));
wxString path;
if (reg.Exists()) {
reg.QueryValue(wxT("InstallPath"), path);
}
return path;
}
wxString GetLibAVFormatName()
{
return (wxT("avformat-") wxT(AV_STRINGIFY(LIBAVFORMAT_VERSION_MAJOR)) wxT(".dll"));
}
#elif defined(__WXMAC__)
/* Library names and file filters for Mac OS only */
wxString GetLibraryTypeString()
{
return _("Dynamic Libraries (*.dylib)|*.dylib|All Files (*)|*");
}
wxString GetLibAVFormatPath()
{
return wxT("/Library/Application Support/audacity/libs");
}
wxString GetLibAVFormatName()
{
return (wxT("libavformat.") wxT(AV_STRINGIFY(LIBAVFORMAT_VERSION_MAJOR)) wxT(".dylib"));
}
#else
/* Library names and file filters for other platforms, basically Linux and
* other *nix platforms */
wxString GetLibraryTypeString()
{
return _("Only libavformat.so|libavformat*.so*|Dynamically Linked Libraries (*.so*)|*.so*|All Files (*)|*");
}
wxString GetLibAVFormatPath()
{
return wxT("");
}
wxString GetLibAVFormatName()
{
return (wxT("libavformat.so.") wxT(AV_STRINGIFY(LIBAVFORMAT_VERSION_MAJOR)));
}
#endif // (__WXMAC__) || (__WXMSW__)
/// Ugly reference counting. I thought of using wxStuff for that,
/// but decided that wx reference counting is not useful, since
/// there's no data sharing - object is shared because libraries are.
int refcount;
private:
///! Stored path to libavformat library
wxString mLibAVFormatPath;
///! Stored library version
wxString mAVCodecVersion;
wxString mAVFormatVersion;
wxString mAVUtilVersion;
///! wx interfaces for dynamic libraries
wxDynamicLibrary *avformat;
wxDynamicLibrary *avcodec;
wxDynamicLibrary *avutil;
///! true if libraries are loaded, false otherwise
bool mLibsLoaded;
};
///! Helper function - creates FFmpegLibs object if it does not exists
///! or just increments reference count if it does
///! It is usually called by constructors or initializators
FFmpegLibs *PickFFmpegLibs();
///! Helper function - destroys FFmpegLibs object if there is no need for it
///! anymore, or just decrements it's reference count
void DropFFmpegLibs();
int ufile_fopen(AVIOContext **s, const wxString & name, int flags);
int ufile_fopen_input(AVFormatContext **ic_ptr, wxString & name);
int ufile_close(AVIOContext *pb);
typedef struct _streamContext
{
bool m_use; // TRUE = this stream will be loaded into Audacity
AVStream *m_stream; // an AVStream *
AVCodecContext *m_codecCtx; // pointer to m_stream->codec
AVPacket m_pkt; // the last AVPacket we read for this stream
int m_pktValid; // is m_pkt valid?
uint8_t *m_pktDataPtr; // pointer into m_pkt.data
int m_pktRemainingSiz;
int64_t m_pts; // the current presentation time of the input stream
int64_t m_ptsOffset; // packets associated with stream are relative to this
int m_frameValid; // is m_decodedVideoFrame/m_decodedAudioSamples valid?
uint8_t *m_decodedAudioSamples; // decoded audio samples stored here
unsigned int m_decodedAudioSamplesSiz; // current size of m_decodedAudioSamples
int m_decodedAudioSamplesValidSiz; // # valid bytes in m_decodedAudioSamples
int m_initialchannels; // number of channels allocated when we begin the importing. Assumes that number of channels doesn't change on the fly.
int m_samplesize; // input sample size in bytes
AVSampleFormat m_samplefmt; // input sample format
int m_osamplesize; // output sample size in bytes
sampleFormat m_osamplefmt; // output sample format
} streamContext;
// common utility functions
// utility calls that are shared with ImportFFmpeg and ODDecodeFFmpegTask
streamContext *import_ffmpeg_read_next_frame(AVFormatContext* formatContext,
streamContext** streams,
unsigned int numStreams);
int import_ffmpeg_decode_frame(streamContext *sc, bool flushing);
#if !defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
extern "C" {
// A little explanation of what's going on here.
//
// The FFmpeg function pointers used to be defined in the FFmpegLibs class and all calls would
// be done via the global class pointer FFmpegLibsInst. This was fine as long as the prototypes
// defined in the class matched the actual functions in the FFmpeg libraries. There was no
// compile time validation to prevent invalid function calls. So, what follows is one way of
// getting the extra validation.
//
// Only one source file should define DEFINE_FFMPEG_POINTERS before including ffmpeg.h. This
// will cause the compiler to dump all of the function pointers to a single object file and
// prevent duplicate symbol definitions during link. This is currently done in ffmpeg.cpp.
//
// The FFMPEG_FUNCTION_WITH_RETURN and FFMPEG_FUNCTION_NO_RETURN macros do two things each:
// 1) Define or reference the variable that contains the actual function pointer
// 2) Define an inline function to pass control to the real function
//
// Since the macros redefine the real ffmpeg functions of the same name, the compiler will
// make sure that the definitions are the same. If not, it will complain. For this to occur,
// the functions MUST be defined in an extern "C" block otherwise the compiler just thinks the
// functions are being overloaded.
//
// The compiler should optimize away the inline function since it just passes control to the real
// function and we should wind up with about the same function call we had before, only now it is
// safer due to the validation.
//
// The FFMPEG_FUNCTION_WITH_RETURN takes 4 arguments:
// 1) The return type <---|
// 2) The function name | Taken from the FFmpeg funciton prototype
// 3) The function arguments <---|
// 4) The argument list to pass to the real function
//
// The FFMPEG_FUNCTION_NO_RETURN takes 3 arguments:
// 1) The function name <---| Taken from the FFmpeg funciton prototype
// 2) The function arguments <---|
// 3) The argument list to pass to the real function
//
// The FFMPEG_INITDYN macro is responsible for retrieving the address of the real function
// and storing that address in the function pointer variable. It will emit an error to the
// currently define log destination and return to the calling function.
//
#if defined(DEFINE_FFMPEG_POINTERS)
#define FFX
#else
#define FFX extern
#endif
#define FFMPEG_FUNCTION_WITH_RETURN(r, n, a, p) \
extern "C" \
{ \
FFX r (*n ## _fp) a; \
inline r n a \
{ \
return n ## _fp p; \
} \
}
#define FFMPEG_FUNCTION_NO_RETURN(n, a, p) \
extern "C" \
{ \
FFX void (*n ## _fp) a; \
inline void n a \
{ \
n ## _fp p; \
} \
}
#define FFMPEG_INITDYN(w, f) \
{ \
wxLogNull off; \
*(void**)&f ## _fp = (void*)w->GetSymbol(wxT(#f)); \
} \
if (f ## _fp == NULL) \
{ \
wxLogError(wxT("Failed to load symbol ") wxT(#f)); \
return false; \
}
#define FFMPEG_INITALT(w, f, x, a) \
{ \
wxLogNull off; \
*(void**)&f ## _fp = (void*)w->GetSymbol(wxT(#f)); \
} \
if (f ## _fp == NULL) \
{ \
{ \
wxLogNull off; \
*(void**)&f ## _fp = (void*)x->GetSymbol(wxT(#a)); \
} \
if (f ## _fp == NULL) \
{ \
wxLogError(wxT("Failed to load symbol ") wxT(#f)); \
return false; \
} \
}
//
// libavutil
//
FFMPEG_FUNCTION_WITH_RETURN(
unsigned,
avutil_version,
(void),
()
);
FFMPEG_FUNCTION_NO_RETURN(
av_log_set_callback,
(void (*cb)(void*, int, const char*, va_list)),
(cb)
);
FFMPEG_FUNCTION_NO_RETURN(
av_log_default_callback,
(void* ptr, int level, const char* fmt, va_list vl),
(ptr, level, fmt, vl)
);
FFMPEG_FUNCTION_NO_RETURN(
av_free,
(void *ptr),
(ptr)
);
//
// libavcodec
//
FFMPEG_FUNCTION_WITH_RETURN(
unsigned,
avcodec_version,
(void),
()
);
FFMPEG_FUNCTION_WITH_RETURN(
AVCodec*,
avcodec_find_encoder,
(enum AVCodecID id),
(id)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVCodec*,
avcodec_find_encoder_by_name,
(const char *name),
(name)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVCodec*,
avcodec_find_decoder,
(enum AVCodecID id),
(id)
);
FFMPEG_FUNCTION_WITH_RETURN(
unsigned int,
av_codec_get_tag,
(const struct AVCodecTag * const *tags, enum AVCodecID id),
(tags, id)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_open2,
(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options),
(avctx, codec, options);
);
#if defined(IS_FFMPEG_PROJECT)
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_decode_audio4,
(AVCodecContext *avctx, AVFrame *frame, int *got_output, const AVPacket *avpkt),
(avctx, frame, got_output, avpkt)
);
#else
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_decode_audio4,
(AVCodecContext *avctx, AVFrame *frame, int *got_output, AVPacket *avpkt),
(avctx, frame, got_output, avpkt)
);
#endif
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_encode_audio2,
(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_output),
(avctx, pkt, frame, got_output)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_close,
(AVCodecContext *avctx),
(avctx)
);
FFMPEG_FUNCTION_NO_RETURN(
avcodec_register_all,
(void),
()
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_get_bytes_per_sample,
(enum AVSampleFormat sample_fmt),
(sample_fmt)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avcodec_fill_audio_frame,
(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align),
(frame, nb_channels, sample_fmt, buf, buf_size, align)
);
//
// libavformat
//
FFMPEG_FUNCTION_WITH_RETURN(
unsigned,
avformat_version,
(void),
()
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avformat_open_input,
(AVFormatContext **ic_ptr, const char *filename, AVInputFormat *fmt, AVDictionary **options),
(ic_ptr, filename, fmt, options)
);
FFMPEG_FUNCTION_NO_RETURN(
av_register_all,
(void),
()
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avformat_find_stream_info,
(AVFormatContext *ic, AVDictionary **options),
(ic, options)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_read_frame,
(AVFormatContext *s, AVPacket *pkt),
(s, pkt)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_seek_frame,
(AVFormatContext *s, int stream_index, int64_t timestamp, int flags),
(s, stream_index, timestamp, flags)
);
FFMPEG_FUNCTION_NO_RETURN(
avformat_close_input,
(AVFormatContext **s),
(s)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
avformat_write_header,
(AVFormatContext *s, AVDictionary **options),
(s, options)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVOutputFormat*,
av_oformat_next,
(AVOutputFormat *f),
(f)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVCodec*,
av_codec_next,
(const AVCodec *c),
(c)
);
#if defined(IS_FFMPEG_PROJECT)
FFMPEG_FUNCTION_WITH_RETURN(
AVStream*,
avformat_new_stream,
(AVFormatContext *s, const AVCodec *c),
(s, c)
);
#else
FFMPEG_FUNCTION_WITH_RETURN(
AVStream*,
avformat_new_stream,
(AVFormatContext *s, AVCodec *c),
(s, c)
);
#endif
FFMPEG_FUNCTION_WITH_RETURN(
AVFormatContext*,
avformat_alloc_context,
(void),
()
);
FFMPEG_FUNCTION_WITH_RETURN(
AVOutputFormat*,
av_guess_format,
(const char *short_name, const char *filename, const char *mime_type),
(short_name, filename, mime_type)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_write_trailer,
(AVFormatContext *s),
(s)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_interleaved_write_frame,
(AVFormatContext *s, AVPacket *pkt),
(s, pkt)
);
FFMPEG_FUNCTION_NO_RETURN(
av_init_packet,
(AVPacket *pkt),
(pkt)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_fifo_generic_write,
(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int)),
(f, src, size, func)
);
FFMPEG_FUNCTION_NO_RETURN(
av_fifo_free,
(AVFifoBuffer *f),
(f)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_fifo_size,
(AVFifoBuffer *f),
(f)
);
FFMPEG_FUNCTION_WITH_RETURN(
void*,
av_malloc,
(size_t size),
(size)
);
FFMPEG_FUNCTION_NO_RETURN(
av_freep,
(void *ptr),
(ptr)
);
FFMPEG_FUNCTION_WITH_RETURN(
int64_t,
av_rescale_q,
(int64_t a, AVRational bq, AVRational cq),
(a, bq, cq)
);
FFMPEG_FUNCTION_NO_RETURN(
av_free_packet,
(AVPacket *pkt),
(pkt)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVFifoBuffer*,
av_fifo_alloc,
(unsigned int size),
(size)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_fifo_generic_read,
(AVFifoBuffer *f, void *buf, int buf_size, void (*func)(void*, void*, int)),
(f, buf, buf_size, func)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_fifo_realloc2,
(AVFifoBuffer *f, unsigned int size),
(f, size)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVDictionaryEntry *,
av_dict_get,
(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags),
(m, key, prev, flags)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_dict_set,
(AVDictionary **pm, const char *key, const char *value, int flags),
(pm, key, value, flags)
);
FFMPEG_FUNCTION_WITH_RETURN(
int64_t,
avio_size,
(AVIOContext *s),
(s)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVIOContext *,
avio_alloc_context,
(unsigned char *buffer,
int buffer_size,
int write_flag,
void *opaque,
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
int64_t (*seek)(void *opaque, int64_t offset, int whence)),
(buffer, buffer_size, write_flag, opaque, read_packet, write_packet, seek)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_codec_is_encoder,
(const AVCodec *codec),
(codec)
);
FFMPEG_FUNCTION_WITH_RETURN(
AVFrame*,
av_frame_alloc,
(void),
()
);
FFMPEG_FUNCTION_NO_RETURN(
av_frame_free,
(AVFrame **frame),
(frame)
);
FFMPEG_FUNCTION_WITH_RETURN(
int,
av_samples_get_buffer_size,
(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align),
(linesize, nb_channels, nb_samples, sample_fmt, align)
);
};
#endif
#endif // USE_FFMPEG
#endif // __AUDACITY_FFMPEG__
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