Revert 41386 - Removed custom FFmpegLock. Removed ffmpeg headers from third_party/ffmpeg/include.

Bot unhappy 

Automatic: "media_unittests" on "Vista Tests" from 41386: ... scherkus@chromium.org ...
http://chrome-buildbot:8010/builders/Vista%20Tests/builds/17009/steps/media_unittests/logs/stdio

Patch by sergeyu@chromium.org

BUG=23271
TEST=none

Review URL: http://codereview.chromium.org/909002

TBR=scherkus@chromium.org
Review URL: http://codereview.chromium.org/854006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@41389 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -104,10 +104,6 @@ deps = {
 
   "src/third_party/swig/Lib":
     "/trunk/deps/third_party/swig/Lib@" + Var("swig_revision"),
-
-  "src/third_party/ffmpeg/source/patched-ffmpeg-mt":
-    "/trunk/deps/third_party/ffmpeg/patched-ffmpeg-mt@" +
-    Var("ffmpeg_revision"),
 }
 
 
@@ -169,6 +165,9 @@ deps_os = {
     # TODO(ajwong): Move this into the OS-independent block.
     "src/third_party/yasm/source/patched-yasm":
       "/trunk/deps/third_party/yasm/patched-yasm@29937",
+    "src/third_party/ffmpeg/source/patched-ffmpeg-mt":
+      "/trunk/deps/third_party/ffmpeg/patched-ffmpeg-mt@" +
+      Var("ffmpeg_revision"),
 
     "src/third_party/swig/mac":
       "/trunk/deps/third_party/swig/mac@" + Var("swig_revision"),
@@ -184,6 +183,9 @@ deps_os = {
     # TODO(ajwong): Move this into the OS-independent block.
     "src/third_party/yasm/source/patched-yasm":
       "/trunk/deps/third_party/yasm/patched-yasm@29937",
+    "src/third_party/ffmpeg/source/patched-ffmpeg-mt":
+      "/trunk/deps/third_party/ffmpeg/patched-ffmpeg-mt@" +
+      Var("ffmpeg_revision"),
 
     "src/third_party/swig/linux":
       "/trunk/deps/third_party/swig/linux@" + Var("swig_revision"),

media/base/mock_ffmpeg.cc

@@ -92,16 +92,6 @@ void av_register_all() {
   media::MockFFmpeg::get()->AVRegisterAll();
 }
 
-int av_lockmgr_register(int (*cb)(void**, enum AVLockOp)) {
-  media::MockFFmpeg* mock = media::MockFFmpeg::get();
-  // Here |mock| may be NULL when this function is called from ~FFmpegGlue().
-  if (mock != NULL) {
-    return media::MockFFmpeg::get()->AVRegisterLockManager(cb);
-  } else {
-    return 0;
-  }
-}
-
 AVCodec* avcodec_find_decoder(enum CodecID id) {
   return media::MockFFmpeg::get()->AVCodecFindDecoder(id);
 }

media/base/mock_ffmpeg.h

@@ -21,7 +21,6 @@ class MockFFmpeg {
   MOCK_METHOD0(AVCodecInit, void());
   MOCK_METHOD1(AVRegisterProtocol, int(URLProtocol* protocol));
   MOCK_METHOD0(AVRegisterAll, void());
-  MOCK_METHOD1(AVRegisterLockManager, int(int (*cb)(void**, enum AVLockOp)));
 
   MOCK_METHOD1(AVCodecFindDecoder, AVCodec*(enum CodecID id));
   MOCK_METHOD2(AVCodecOpen, int(AVCodecContext* avctx, AVCodec* codec));

media/ffmpeg/ffmpeg_common.cc

@@ -6,6 +6,16 @@
 
 namespace media {
 
+FFmpegLock::FFmpegLock() {
+}
+
+FFmpegLock::~FFmpegLock() {
+}
+
+Lock& FFmpegLock::lock() {
+  return lock_;
+}
+
 namespace mime_type {
 
 const char kFFmpegAudio[] = "audio/x-ffmpeg";

media/ffmpeg/ffmpeg_common.h

@@ -19,14 +19,34 @@ extern "C" {
 // Temporarily disable possible loss of data warning.
 // TODO(scherkus): fix and upstream the compiler warnings.
 MSVC_PUSH_DISABLE_WARNING(4244);
-#include "third_party/ffmpeg/source/patched-ffmpeg-mt/libavcodec/avcodec.h"
-#include "third_party/ffmpeg/source/patched-ffmpeg-mt/libavformat/avformat.h"
-#include "third_party/ffmpeg/source/patched-ffmpeg-mt/libavutil/log.h"
+#include "third_party/ffmpeg/include/libavcodec/avcodec.h"
+#include "third_party/ffmpeg/include/libavformat/avformat.h"
+#include "third_party/ffmpeg/include/libavutil/log.h"
 MSVC_POP_WARNING();
 }  // extern "C"
 
 namespace media {
 
+// FFmpegLock is used to serialize calls to avcodec_open(), avcodec_close(),
+// and av_find_stream_info() for an entire process because for whatever reason
+// it does Very Bad Things to other FFmpeg instances.
+//
+// TODO(scherkus): track down and upstream a fix to FFmpeg, if possible.
+class FFmpegLock : public Singleton<FFmpegLock> {
+ public:
+  Lock& lock();
+
+ private:
+  // Only allow Singleton to create and delete FFmpegLock.
+  friend struct DefaultSingletonTraits<FFmpegLock>;
+  FFmpegLock();
+  virtual ~FFmpegLock();
+
+  Lock lock_;
+  DISALLOW_COPY_AND_ASSIGN(FFmpegLock);
+};
+
+
 // Wraps FFmpeg's av_free() in a class that can be passed as a template argument
 // to scoped_ptr_malloc.
 class ScopedPtrAVFree {

media/filters/ffmpeg_audio_decoder.cc

@@ -61,8 +61,11 @@ void FFmpegAudioDecoder::DoInitialize(DemuxerStream* demuxer_stream,
 
   // Serialize calls to avcodec_open().
   AVCodec* codec = avcodec_find_decoder(codec_context_->codec_id);
-  if (!codec || avcodec_open(codec_context_, codec) < 0) {
-    return;
+  {
+    AutoLock auto_lock(FFmpegLock::get()->lock());
+    if (!codec || avcodec_open(codec_context_, codec) < 0) {
+      return;
+    }
   }
 
   // When calling avcodec_find_decoder(), |codec_context_| might be altered by

media/filters/ffmpeg_demuxer.cc

@@ -235,6 +235,7 @@ FFmpegDemuxer::~FFmpegDemuxer() {
   // in the decoder filters. By reaching this point, all filters should have
   // stopped, so this is the only safe place to do the global clean up.
   // TODO(hclam): close the codecs in the corresponding decoders.
+  AutoLock auto_lock(FFmpegLock::get()->lock());
   if (!format_context_)
     return;
 
@@ -396,12 +397,17 @@ void FFmpegDemuxer::InitializeTask(DataSource* data_source,
   DCHECK(context);
   format_context_ = context;
 
-  // Fully initialize AVFormatContext by parsing the stream a little.
-  result = av_find_stream_info(format_context_);
-  if (result < 0) {
-    host()->SetError(DEMUXER_ERROR_COULD_NOT_PARSE);
-    callback->Run();
-    return;
+  // Serialize calls to av_find_stream_info().
+  {
+    AutoLock auto_lock(FFmpegLock::get()->lock());
+
+    // Fully initialize AVFormatContext by parsing the stream a little.
+    result = av_find_stream_info(format_context_);
+    if (result < 0) {
+      host()->SetError(DEMUXER_ERROR_COULD_NOT_PARSE);
+      callback->Run();
+      return;
+    }
   }
 
   // Create demuxer streams for all supported streams.

media/filters/ffmpeg_glue.cc

@@ -81,30 +81,6 @@ int CloseContext(URLContext* h) {
   return 0;
 }
 
-int LockManagerOperation(void** lock, enum AVLockOp op) {
-  switch (op) {
-    case AV_LOCK_CREATE:
-      *lock = new Lock();
-      if (!*lock)
-        return 1;
-      return 0;
-
-    case AV_LOCK_OBTAIN:
-      static_cast<Lock*>(*lock)->Acquire();
-      return 0;
-
-    case AV_LOCK_RELEASE:
-      static_cast<Lock*>(*lock)->Release();
-      return 0;
-
-    case AV_LOCK_DESTROY:
-      delete static_cast<Lock*>(*lock);
-      *lock = NULL;
-      return 0;
-  }
-  return 1;
-}
-
 }  // namespace
 
 //------------------------------------------------------------------------------
@@ -131,14 +107,12 @@ FFmpegGlue::FFmpegGlue() {
   // Register our protocol glue code with FFmpeg.
   avcodec_init();
   av_register_protocol(&kFFmpegURLProtocol);
-  av_lockmgr_register(&LockManagerOperation);
 
   // Now register the rest of FFmpeg.
   av_register_all();
 }
 
 FFmpegGlue::~FFmpegGlue() {
-  av_lockmgr_register(NULL);
 }
 
 std::string FFmpegGlue::AddProtocol(FFmpegURLProtocol* protocol) {

media/filters/ffmpeg_video_decode_engine.cc

@@ -47,13 +47,17 @@ void FFmpegVideoDecodeEngine::Initialize(AVStream* stream, Task* done_cb) {
   codec_context_->error_concealment = FF_EC_GUESS_MVS | FF_EC_DEBLOCK;
   codec_context_->error_recognition = FF_ER_CAREFUL;
 
+  // Serialize calls to avcodec_open().
   AVCodec* codec = avcodec_find_decoder(codec_context_->codec_id);
-  if (codec &&
-      avcodec_thread_init(codec_context_, kDecodeThreads) >= 0 &&
-      avcodec_open(codec_context_, codec) >= 0) {
-    state_ = kNormal;
-  } else {
-    state_ = kError;
+  {
+    AutoLock auto_lock(FFmpegLock::get()->lock());
+    if (codec &&
+        avcodec_thread_init(codec_context_, kDecodeThreads) >= 0 &&
+        avcodec_open(codec_context_, codec) >= 0) {
+      state_ = kNormal;
+    } else {
+      state_ = kError;
+    }
   }
 }
 

third_party/ffmpeg/avcodec-52.sigs

@@ -22,4 +22,3 @@ AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int keyframe);
 void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
 void av_destruct_packet(AVPacket *pkt);
-int av_lockmgr_register(AVLockMgrOperation cb);

third_party/ffmpeg/ffmpeg.gyp

@@ -61,7 +61,7 @@
     ['(OS!="linux" and OS!="freebsd" and OS!="openbsd" and OS!="solaris" and OS!="mac") or use_system_ffmpeg!=0', {
       'variables': {
         'target_for_binaries': 'ffmpeg_binaries',
-        'ffmpeg_include_root': 'source/patched-ffmpeg-mt',
+        'ffmpeg_include_root': 'include',
       },
     },{  # else OS=="linux"
       'variables': {
@@ -136,7 +136,7 @@
           'include_dirs': [
             'source/config/<(ffmpeg_branding)/<(OS)/<(ffmpeg_config)',
             'source/patched-ffmpeg-mt',
-            'source/config',
+	    'source/config',
           ],
           'defines': [
             'HAVE_AV_CONFIG_H',
@@ -642,8 +642,7 @@
       'hard_dependency': 1,
       'direct_dependent_settings': {
         'include_dirs': [
-          'source/patched-ffmpeg-mt',
-          'source/config',
+          'include',
         ],
       },
       'conditions': [
@@ -709,8 +708,7 @@
             },
             'type': '<(library)',
             'include_dirs': [
-              'source/patched-ffmpeg-mt',
-              'source/config',
+              'include',
               '<(output_root)',
               '../..',  # The chromium 'src' directory.
             ],

third_party/ffmpeg/ffmpeg_stub_headers.fragment

@@ -3,9 +3,7 @@
 
 extern "C" {
 
-#include "third_party/ffmpeg/source/patched-ffmpeg-mt/libavcodec/avcodec.h"
-#include "third_party/ffmpeg/source/patched-ffmpeg-mt/libavformat/avformat.h"
-
-typedef int (*AVLockMgrOperation)(void**, enum AVLockOp);
+#include "third_party/ffmpeg/include/libavcodec/avcodec.h"
+#include "third_party/ffmpeg/include/libavformat/avformat.h"
 
 }

third_party/ffmpeg/include/libavcodec/opt.h

+/*
+ * AVOptions
+ * copyright (c) 2005 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
+ */
+
+#ifndef AVCODEC_OPT_H
+#define AVCODEC_OPT_H
+
+/**
+ * @file libavcodec/opt.h
+ * AVOptions
+ */
+
+#include "libavutil/rational.h"
+#include "avcodec.h"
+
+enum AVOptionType{
+    FF_OPT_TYPE_FLAGS,
+    FF_OPT_TYPE_INT,
+    FF_OPT_TYPE_INT64,
+    FF_OPT_TYPE_DOUBLE,
+    FF_OPT_TYPE_FLOAT,
+    FF_OPT_TYPE_STRING,
+    FF_OPT_TYPE_RATIONAL,
+    FF_OPT_TYPE_BINARY,  ///< offset must point to a pointer immediately followed by an int for the length
+    FF_OPT_TYPE_CONST=128,
+};
+
+/**
+ * AVOption
+ */
+typedef struct AVOption {
+    const char *name;
+
+    /**
+     * short English help text
+     * @todo What about other languages?
+     */
+    const char *help;
+
+    /**
+     * The offset relative to the context structure where the option
+     * value is stored. It should be 0 for named constants.
+     */
+    int offset;
+    enum AVOptionType type;
+
+    /**
+     * the default value for scalar options
+     */
+    double default_val;
+    double min;                 ///< minimum valid value for the option
+    double max;                 ///< maximum valid value for the option
+
+    int flags;
+#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
+#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
+#define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
+#define AV_OPT_FLAG_AUDIO_PARAM     8
+#define AV_OPT_FLAG_VIDEO_PARAM     16
+#define AV_OPT_FLAG_SUBTITLE_PARAM  32
+//FIXME think about enc-audio, ... style flags
+
+    /**
+     * The logical unit to which the option belongs. Non-constant
+     * options and corresponding named constants share the same
+     * unit. May be NULL.
+     */
+    const char *unit;
+} AVOption;
+
+
+/**
+ * Looks for an option in \p obj. Looks only for the options which
+ * have the flags set as specified in \p mask and \p flags (that is,
+ * for which it is the case that opt->flags & mask == flags).
+ *
+ * @param[in] obj a pointer to a struct whose first element is a
+ * pointer to an AVClass
+ * @param[in] name the name of the option to look for
+ * @param[in] unit the unit of the option to look for, or any if NULL
+ * @return a pointer to the option found, or NULL if no option
+ * has been found
+ */
+const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
+
+#if LIBAVCODEC_VERSION_MAJOR < 53
+/**
+ * @see av_set_string2()
+ */
+attribute_deprecated const AVOption *av_set_string(void *obj, const char *name, const char *val);
+
+/**
+ * @return a pointer to the AVOption corresponding to the field set or
+ * NULL if no matching AVOption exists, or if the value \p val is not
+ * valid
+ * @see av_set_string3()
+ */
+attribute_deprecated const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc);
+#endif
+
+/**
+ * Sets the field of obj with the given name to value.
+ *
+ * @param[in] obj A struct whose first element is a pointer to an
+ * AVClass.
+ * @param[in] name the name of the field to set
+ * @param[in] val The value to set. If the field is not of a string
+ * type, then the given string is parsed.
+ * SI postfixes and some named scalars are supported.
+ * If the field is of a numeric type, it has to be a numeric or named
+ * scalar. Behavior with more than one scalar and +- infix operators
+ * is undefined.
+ * If the field is of a flags type, it has to be a sequence of numeric
+ * scalars or named flags separated by '+' or '-'. Prefixing a flag
+ * with '+' causes it to be set without affecting the other flags;
+ * similarly, '-' unsets a flag.
+ * @param[out] o_out if non-NULL put here a pointer to the AVOption
+ * found
+ * @param alloc when 1 then the old value will be av_freed() and the
+ *                     new av_strduped()
+ *              when 0 then no av_free() nor av_strdup() will be used
+ * @return 0 if the value has been set, an AVERROR* error code if no
+ * matching option exists, or if the value \p val is not valid
+ */
+int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out);
+
+const AVOption *av_set_double(void *obj, const char *name, double n);
+const AVOption *av_set_q(void *obj, const char *name, AVRational n);
+const AVOption *av_set_int(void *obj, const char *name, int64_t n);
+double av_get_double(void *obj, const char *name, const AVOption **o_out);
+AVRational av_get_q(void *obj, const char *name, const AVOption **o_out);
+int64_t av_get_int(void *obj, const char *name, const AVOption **o_out);
+const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len);
+const AVOption *av_next_option(void *obj, const AVOption *last);
+int av_opt_show(void *obj, void *av_log_obj);
+void av_opt_set_defaults(void *s);
+void av_opt_set_defaults2(void *s, int mask, int flags);
+
+#endif /* AVCODEC_OPT_H */

third_party/ffmpeg/include/libavcodec/vdpau.h

+/*
+ * The Video Decode and Presentation API for UNIX (VDPAU) is used for
+ * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.
+ *
+ * Copyright (C) 2008 NVIDIA
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VDPAU_H
+#define AVCODEC_VDPAU_H
+
+/**
+ * \defgroup Decoder VDPAU Decoder and Renderer
+ *
+ * VDPAU hardware acceleration has two modules
+ * - VDPAU decoding
+ * - VDPAU presentation
+ *
+ * The VDPAU decoding module parses all headers using FFmpeg
+ * parsing mechanisms and uses VDPAU for the actual decoding.
+ *
+ * As per the current implementation, the actual decoding
+ * and rendering (API calls) are done as part of the VDPAU
+ * presentation (vo_vdpau.c) module.
+ *
+ * @{
+ * \defgroup  VDPAU_Decoding VDPAU Decoding
+ * \ingroup Decoder
+ * @{
+ */
+
+#include <vdpau/vdpau.h>
+#include <vdpau/vdpau_x11.h>
+
+/** \brief The videoSurface is used for rendering. */
+#define FF_VDPAU_STATE_USED_FOR_RENDER 1
+
+/**
+ * \brief The videoSurface is needed for reference/prediction.
+ * The codec manipulates this.
+ */
+#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
+
+/**
+ * \brief This structure is used as a callback between the FFmpeg
+ * decoder (vd_) and presentation (vo_) module.
+ * This is used for defining a video frame containing surface,
+ * picture parameter, bitstream information etc which are passed
+ * between the FFmpeg decoder and its clients.
+ */
+struct vdpau_render_state {
+    VdpVideoSurface surface; ///< Used as rendered surface, never changed.
+
+    int state; ///< Holds FF_VDPAU_STATE_* values.
+
+    /** picture parameter information for all supported codecs */
+    union VdpPictureInfo {
+        VdpPictureInfoH264     h264;
+        VdpPictureInfoMPEG1Or2 mpeg;
+        VdpPictureInfoVC1       vc1;
+    } info;
+
+    /** Describe size/location of the compressed video data. */
+    int bitstream_buffers_allocated;
+    int bitstream_buffers_used;
+    VdpBitstreamBuffer *bitstream_buffers;
+};
+
+/* @}*/
+
+#endif /* AVCODEC_VDPAU_H */

third_party/ffmpeg/include/libavcodec/xvmc.h

+/*
+ * Copyright (C) 2003 Ivan Kalvachev
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_XVMC_H
+#define AVCODEC_XVMC_H
+
+#include <X11/extensions/XvMC.h>
+
+#include "avcodec.h"
+
+#if LIBAVCODEC_VERSION_MAJOR < 53
+#define AV_XVMC_STATE_DISPLAY_PENDING          1  /**  the surface should be shown, the video driver manipulates this */
+#define AV_XVMC_STATE_PREDICTION               2  /**  the surface is needed for prediction, the codec manipulates this */
+#define AV_XVMC_STATE_OSD_SOURCE               4  /**  the surface is needed for subpicture rendering */
+#endif
+#define AV_XVMC_ID                    0x1DC711C0  /**< special value to ensure that regular pixel routines haven't corrupted the struct
+                                                       the number is 1337 speak for the letters IDCT MCo (motion compensation) */
+
+struct xvmc_pix_fmt {
+    /** The field contains the special constant value AV_XVMC_ID.
+        It is used as a test that the application correctly uses the API,
+        and that there is no corruption caused by pixel routines.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    int             xvmc_id;
+
+    /** Pointer to the block array allocated by XvMCCreateBlocks().
+        The array has to be freed by XvMCDestroyBlocks().
+        Each group of 64 values represents one data block of differential
+        pixel information (in MoCo mode) or coefficients for IDCT.
+        - application - set the pointer during initialization
+        - libavcodec  - fills coefficients/pixel data into the array
+    */
+    short*          data_blocks;
+
+    /** Pointer to the macroblock description array allocated by
+        XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
+        - application - set the pointer during initialization
+        - libavcodec  - fills description data into the array
+    */
+    XvMCMacroBlock* mv_blocks;
+
+    /** Number of macroblock descriptions that can be stored in the mv_blocks
+        array.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    int             allocated_mv_blocks;
+
+    /** Number of blocks that can be stored at once in the data_blocks array.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    int             allocated_data_blocks;
+
+    /** Indicates that the hardware would interpret data_blocks as IDCT
+        coefficients and perform IDCT on them.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    int             idct;
+
+    /** In MoCo mode it indicates that intra macroblocks are assumed to be in
+        unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    int             unsigned_intra;
+
+    /** Pointer to the surface allocated by XvMCCreateSurface().
+        It has to be freed by XvMCDestroySurface() on application exit.
+        It identifies the frame and its state on the video hardware.
+        - application - set during initialization
+        - libavcodec  - unchanged
+    */
+    XvMCSurface*    p_surface;
+
+/** Set by the decoder before calling ff_draw_horiz_band(),
+    needed by the XvMCRenderSurface function. */
+//@{
+    /** Pointer to the surface used as past reference
+        - application - unchanged
+        - libavcodec  - set
+    */
+    XvMCSurface*    p_past_surface;
+
+    /** Pointer to the surface used as future reference
+        - application - unchanged
+        - libavcodec  - set
+    */
+    XvMCSurface*    p_future_surface;
+
+    /** top/bottom field or frame
+        - application - unchanged
+        - libavcodec  - set
+    */
+    unsigned int    picture_structure;
+
+    /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
+        - application - unchanged
+        - libavcodec  - set
+    */
+    unsigned int    flags;
+//}@
+
+    /** Number of macroblock descriptions in the mv_blocks array
+        that have already been passed to the hardware.
+        - application - zeroes it on get_buffer().
+                        A successful ff_draw_horiz_band() may increment it
+                        with filled_mb_block_num or zero both.
+        - libavcodec  - unchanged
+    */
+    int             start_mv_blocks_num;
+
+    /** Number of new macroblock descriptions in the mv_blocks array (after
+        start_mv_blocks_num) that are filled by libavcodec and have to be
+        passed to the hardware.
+        - application - zeroes it on get_buffer() or after successful
+                        ff_draw_horiz_band().
+        - libavcodec  - increment with one of each stored MB
+    */
+    int             filled_mv_blocks_num;
+
+    /** Number of the the next free data block; one data block consists of
+        64 short values in the data_blocks array.
+        All blocks before this one have already been claimed by placing their
+        position into the corresponding block description structure field,
+        that are part of the mv_blocks array.
+        - application - zeroes it on get_buffer().
+                        A successful ff_draw_horiz_band() may zero it together
+                        with start_mb_blocks_num.
+        - libavcodec  - each decoded macroblock increases it by the number
+                        of coded blocks it contains.
+    */
+    int             next_free_data_block_num;
+
+/** extensions may be placed here */
+#if LIBAVCODEC_VERSION_MAJOR < 53
+//@{
+    /** State flags used to work around limitations in the MPlayer video system.
+        0   - Surface is not used.
+        1   - Surface is still held in application to be displayed or is
+              still visible.
+        2   - Surface is still held in libavcodec buffer for prediction.
+    */
+    int             state;
+
+    /** pointer to the surface where the subpicture is rendered */
+    void*           p_osd_target_surface_render;
+//}@
+#endif
+};
+
+#endif /* AVCODEC_XVMC_H */

third_party/ffmpeg/include/libavformat/avio.h

+/*
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * 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
+ */
+#ifndef AVFORMAT_AVIO_H
+#define AVFORMAT_AVIO_H
+
+/**
+ * @file libavformat/avio.h
+ * unbuffered I/O operations
+ *
+ * @warning This file has to be considered an internal but installed
+ * header, so it should not be directly included in your projects.
+ */
+
+#include <stdint.h>
+
+#include "libavutil/common.h"
+
+/* unbuffered I/O */
+
+/**
+ * URL Context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(URLContext) must not be used outside libav*.
+ */
+struct URLContext {
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+    const AVClass *av_class; ///< information for av_log(). Set by url_open().
+#endif
+    struct URLProtocol *prot;
+    int flags;
+    int is_streamed;  /**< true if streamed (no seek possible), default = false */
+    int max_packet_size;  /**< if non zero, the stream is packetized with this max packet size */
+    void *priv_data;
+    char *filename; /**< specified filename */
+};
+
+typedef struct URLContext URLContext;
+
+typedef struct URLPollEntry {
+    URLContext *handle;
+    int events;
+    int revents;
+} URLPollEntry;
+
+#define URL_RDONLY 0
+#define URL_WRONLY 1
+#define URL_RDWR   2
+
+typedef int URLInterruptCB(void);
+
+int url_open_protocol (URLContext **puc, struct URLProtocol *up,
+                       const char *filename, int flags);
+int url_open(URLContext **h, const char *filename, int flags);
+int url_read(URLContext *h, unsigned char *buf, int size);
+int url_write(URLContext *h, unsigned char *buf, int size);
+int64_t url_seek(URLContext *h, int64_t pos, int whence);
+int url_close(URLContext *h);
+int url_exist(const char *filename);
+int64_t url_filesize(URLContext *h);
+
+/**
+ * Return the file descriptor associated with this URL. For RTP, this
+ * will return only the RTP file descriptor, not the RTCP file descriptor.
+ * To get both, use rtp_get_file_handles().
+ *
+ * @return the file descriptor associated with this URL, or <0 on error.
+ */
+int url_get_file_handle(URLContext *h);
+
+/**
+ * Return the maximum packet size associated to packetized file
+ * handle. If the file is not packetized (stream like HTTP or file on
+ * disk), then 0 is returned.
+ *
+ * @param h file handle
+ * @return maximum packet size in bytes
+ */
+int url_get_max_packet_size(URLContext *h);
+void url_get_filename(URLContext *h, char *buf, int buf_size);
+
+/**
+ * The callback is called in blocking functions to test regulary if
+ * asynchronous interruption is needed. AVERROR(EINTR) is returned
+ * in this case by the interrupted function. 'NULL' means no interrupt
+ * callback is given.
+ */
+void url_set_interrupt_cb(URLInterruptCB *interrupt_cb);
+
+/* not implemented */
+int url_poll(URLPollEntry *poll_table, int n, int timeout);
+
+/**
+ * Pause and resume playing - only meaningful if using a network streaming
+ * protocol (e.g. MMS).
+ * @param pause 1 for pause, 0 for resume
+ */
+int av_url_read_pause(URLContext *h, int pause);
+
+/**
+ * Seek to a given timestamp relative to some component stream.
+ * Only meaningful if using a network streaming protocol (e.g. MMS.).
+ * @param stream_index The stream index that the timestamp is relative to.
+ *        If stream_index is (-1) the timestamp should be in AV_TIME_BASE
+ *        units from the beginning of the presentation.
+ *        If a stream_index >= 0 is used and the protocol does not support
+ *        seeking based on component streams, the call will fail with ENOTSUP.
+ * @param timestamp timestamp in AVStream.time_base units
+ *        or if there is no stream specified then in AV_TIME_BASE units.
+ * @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE
+ *        and AVSEEK_FLAG_ANY. The protocol may silently ignore
+ *        AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will
+ *        fail with ENOTSUP if used and not supported.
+ * @return >= 0 on success
+ * @see AVInputFormat::read_seek
+ */
+int64_t av_url_read_seek(URLContext *h, int stream_index,
+                         int64_t timestamp, int flags);
+
+/**
+ * Passing this as the "whence" parameter to a seek function causes it to
+ * return the filesize without seeking anywhere. Supporting this is optional.
+ * If it is not supported then the seek function will return <0.
+ */
+#define AVSEEK_SIZE 0x10000
+
+typedef struct URLProtocol {
+    const char *name;
+    int (*url_open)(URLContext *h, const char *filename, int flags);
+    int (*url_read)(URLContext *h, unsigned char *buf, int size);
+    int (*url_write)(URLContext *h, unsigned char *buf, int size);
+    int64_t (*url_seek)(URLContext *h, int64_t pos, int whence);
+    int (*url_close)(URLContext *h);
+    struct URLProtocol *next;
+    int (*url_read_pause)(URLContext *h, int pause);
+    int64_t (*url_read_seek)(URLContext *h, int stream_index,
+                             int64_t timestamp, int flags);
+    int (*url_get_file_handle)(URLContext *h);
+} URLProtocol;
+
+#if LIBAVFORMAT_VERSION_MAJOR < 53
+extern URLProtocol *first_protocol;
+#endif
+
+extern URLInterruptCB *url_interrupt_cb;
+
+/**
+ * If protocol is NULL, returns the first registered protocol,
+ * if protocol is non-NULL, returns the next registered protocol after protocol,
+ * or NULL if protocol is the last one.
+ */
+URLProtocol *av_protocol_next(URLProtocol *p);
+
+#if LIBAVFORMAT_VERSION_MAJOR < 53
+/**
+ * @deprecated Use av_register_protocol() instead.
+ */
+attribute_deprecated int register_protocol(URLProtocol *protocol);
+#endif
+
+int av_register_protocol(URLProtocol *protocol);
+
+/**
+ * Bytestream IO Context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(ByteIOContext) must not be used outside libav*.
+ */
+typedef struct {
+    unsigned char *buffer;
+    int buffer_size;
+    unsigned char *buf_ptr, *buf_end;
+    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);
+    int64_t pos; /**< position in the file of the current buffer */
+    int must_flush; /**< true if the next seek should flush */
+    int eof_reached; /**< true if eof reached */
+    int write_flag;  /**< true if open for writing */
+    int is_streamed;
+    int max_packet_size;
+    unsigned long checksum;
+    unsigned char *checksum_ptr;
+    unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size);
+    int error;         ///< contains the error code or 0 if no error happened
+    int (*read_pause)(void *opaque, int pause);
+    int64_t (*read_seek)(void *opaque, int stream_index,
+                         int64_t timestamp, int flags);
+} ByteIOContext;
+
+int init_put_byte(ByteIOContext *s,
+                  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));
+ByteIOContext *av_alloc_put_byte(
+                  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));
+
+void put_byte(ByteIOContext *s, int b);
+void put_buffer(ByteIOContext *s, const unsigned char *buf, int size);
+void put_le64(ByteIOContext *s, uint64_t val);
+void put_be64(ByteIOContext *s, uint64_t val);
+void put_le32(ByteIOContext *s, unsigned int val);
+void put_be32(ByteIOContext *s, unsigned int val);
+void put_le24(ByteIOContext *s, unsigned int val);
+void put_be24(ByteIOContext *s, unsigned int val);
+void put_le16(ByteIOContext *s, unsigned int val);
+void put_be16(ByteIOContext *s, unsigned int val);
+void put_tag(ByteIOContext *s, const char *tag);
+
+void put_strz(ByteIOContext *s, const char *buf);
+
+/**
+ * fseek() equivalent for ByteIOContext.
+ * @return new position or AVERROR.
+ */
+int64_t url_fseek(ByteIOContext *s, int64_t offset, int whence);
+
+/**
+ * Skip given number of bytes forward.
+ * @param offset number of bytes
+ */
+void url_fskip(ByteIOContext *s, int64_t offset);
+
+/**
+ * ftell() equivalent for ByteIOContext.
+ * @return position or AVERROR.
+ */
+int64_t url_ftell(ByteIOContext *s);
+
+/**
+ * Gets the filesize.
+ * @return filesize or AVERROR
+ */
+int64_t url_fsize(ByteIOContext *s);
+
+/**
+ * feof() equivalent for ByteIOContext.
+ * @return non zero if and only if end of file
+ */
+int url_feof(ByteIOContext *s);
+
+int url_ferror(ByteIOContext *s);
+
+int av_url_read_fpause(ByteIOContext *h, int pause);
+int64_t av_url_read_fseek(ByteIOContext *h, int stream_index,
+                          int64_t timestamp, int flags);
+
+#define URL_EOF (-1)
+/** @note return URL_EOF (-1) if EOF */
+int url_fgetc(ByteIOContext *s);
+
+/** @warning currently size is limited */
+#ifdef __GNUC__
+int url_fprintf(ByteIOContext *s, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
+#else
+int url_fprintf(ByteIOContext *s, const char *fmt, ...);
+#endif
+
+/** @note unlike fgets, the EOL character is not returned and a whole
+    line is parsed. return NULL if first char read was EOF */
+char *url_fgets(ByteIOContext *s, char *buf, int buf_size);
+
+void put_flush_packet(ByteIOContext *s);
+
+
+/**
+ * Reads size bytes from ByteIOContext into buf.
+ * @returns number of bytes read or AVERROR
+ */
+int get_buffer(ByteIOContext *s, unsigned char *buf, int size);
+
+/**
+ * Reads size bytes from ByteIOContext into buf.
+ * This reads at most 1 packet. If that is not enough fewer bytes will be
+ * returned.
+ * @returns number of bytes read or AVERROR
+ */
+int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size);
+
+/** @note return 0 if EOF, so you cannot use it if EOF handling is
+    necessary */
+int get_byte(ByteIOContext *s);
+unsigned int get_le24(ByteIOContext *s);
+unsigned int get_le32(ByteIOContext *s);
+uint64_t get_le64(ByteIOContext *s);
+unsigned int get_le16(ByteIOContext *s);
+
+char *get_strz(ByteIOContext *s, char *buf, int maxlen);
+unsigned int get_be16(ByteIOContext *s);
+unsigned int get_be24(ByteIOContext *s);
+unsigned int get_be32(ByteIOContext *s);
+uint64_t get_be64(ByteIOContext *s);
+
+uint64_t ff_get_v(ByteIOContext *bc);
+
+static inline int url_is_streamed(ByteIOContext *s)
+{
+    return s->is_streamed;
+}
+
+/** @note when opened as read/write, the buffers are only used for
+    writing */
+int url_fdopen(ByteIOContext **s, URLContext *h);
+
+/** @warning must be called before any I/O */
+int url_setbufsize(ByteIOContext *s, int buf_size);
+/** Reset the buffer for reading or writing.
+ * @note Will drop any data currently in the buffer without transmitting it.
+ * @param flags URL_RDONLY to set up the buffer for reading, or URL_WRONLY
+ *        to set up the buffer for writing. */
+int url_resetbuf(ByteIOContext *s, int flags);
+
+/** @note when opened as read/write, the buffers are only used for
+    writing */
+int url_fopen(ByteIOContext **s, const char *filename, int flags);
+int url_fclose(ByteIOContext *s);
+URLContext *url_fileno(ByteIOContext *s);
+
+/**
+ * Return the maximum packet size associated to packetized buffered file
+ * handle. If the file is not packetized (stream like http or file on
+ * disk), then 0 is returned.
+ *
+ * @param s buffered file handle
+ * @return maximum packet size in bytes
+ */
+int url_fget_max_packet_size(ByteIOContext *s);
+
+int url_open_buf(ByteIOContext **s, uint8_t *buf, int buf_size, int flags);
+
+/** return the written or read size */
+int url_close_buf(ByteIOContext *s);
+
+/**
+ * Open a write only memory stream.
+ *
+ * @param s new IO context
+ * @return zero if no error.
+ */
+int url_open_dyn_buf(ByteIOContext **s);
+
+/**
+ * Open a write only packetized memory stream with a maximum packet
+ * size of 'max_packet_size'.  The stream is stored in a memory buffer
+ * with a big endian 4 byte header giving the packet size in bytes.
+ *
+ * @param s new IO context
+ * @param max_packet_size maximum packet size (must be > 0)
+ * @return zero if no error.
+ */
+int url_open_dyn_packet_buf(ByteIOContext **s, int max_packet_size);
+
+/**
+ * Return the written size and a pointer to the buffer. The buffer
+ *  must be freed with av_free().
+ * @param s IO context
+ * @param pbuffer pointer to a byte buffer
+ * @return the length of the byte buffer
+ */
+int url_close_dyn_buf(ByteIOContext *s, uint8_t **pbuffer);
+
+unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
+                                    unsigned int len);
+unsigned long get_checksum(ByteIOContext *s);
+void init_checksum(ByteIOContext *s,
+                   unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
+                   unsigned long checksum);
+
+/* udp.c */
+int udp_set_remote_url(URLContext *h, const char *uri);
+int udp_get_local_port(URLContext *h);
+#if (LIBAVFORMAT_VERSION_MAJOR <= 52)
+int udp_get_file_handle(URLContext *h);
+#endif
+
+#endif /* AVFORMAT_AVIO_H */

third_party/ffmpeg/include/libavutil/adler32.h

+/*
+ * copyright (c) 2006 Mans Rullgard
+ *
+ * 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
+ */
+
+#ifndef AVUTIL_ADLER32_H
+#define AVUTIL_ADLER32_H
+
+#include <stdint.h>
+#include "common.h"
+
+unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf,
+                                unsigned int len) av_pure;
+
+#endif /* AVUTIL_ADLER32_H */

third_party/ffmpeg/include/libavutil/avstring.h

+/*
+ * Copyright (c) 2007 Mans Rullgard
+ *
+ * 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
+ */
+
+#ifndef AVUTIL_AVSTRING_H
+#define AVUTIL_AVSTRING_H
+
+#include <stddef.h>
+
+/**
+ * Return non-zero if pfx is a prefix of str. If it is, *ptr is set to
+ * the address of the first character in str after the prefix.
+ *
+ * @param str input string
+ * @param pfx prefix to test
+ * @param ptr updated if the prefix is matched inside str
+ * @return non-zero if the prefix matches, zero otherwise
+ */
+int av_strstart(const char *str, const char *pfx, const char **ptr);
+
+/**
+ * Return non-zero if pfx is a prefix of str independent of case. If
+ * it is, *ptr is set to the address of the first character in str
+ * after the prefix.
+ *
+ * @param str input string
+ * @param pfx prefix to test
+ * @param ptr updated if the prefix is matched inside str
+ * @return non-zero if the prefix matches, zero otherwise
+ */
+int av_stristart(const char *str, const char *pfx, const char **ptr);
+
+/**
+ * Copy the string src to dst, but no more than size - 1 bytes, and
+ * null-terminate dst.
+ *
+ * This function is the same as BSD strlcpy().
+ *
+ * @param dst destination buffer
+ * @param src source string
+ * @param size size of destination buffer
+ * @return the length of src
+ */
+size_t av_strlcpy(char *dst, const char *src, size_t size);
+
+/**
+ * Append the string src to the string dst, but to a total length of
+ * no more than size - 1 bytes, and null-terminate dst.
+ *
+ * This function is similar to BSD strlcat(), but differs when
+ * size <= strlen(dst).
+ *
+ * @param dst destination buffer
+ * @param src source string
+ * @param size size of destination buffer
+ * @return the total length of src and dst
+ */
+size_t av_strlcat(char *dst, const char *src, size_t size);
+
+/**
+ * Append output to a string, according to a format. Never write out of
+ * the destination buffer, and and always put a terminating 0 within
+ * the buffer.
+ * @param dst destination buffer (string to which the output is
+ *  appended)
+ * @param size total size of the destination buffer
+ * @param fmt printf-compatible format string, specifying how the
+ *  following parameters are used
+ * @return the length of the string that would have been generated
+ *  if enough space had been available
+ */
+size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...);
+
+#endif /* AVUTIL_AVSTRING_H */