Prefix all _demuxer, _muxer, _protocol from libavformat and libavdevice.

This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.
(cherry picked from commit c6610a21)

libavdevice/alldevices.c

@@ -23,11 +23,11 @@
 #include "avdevice.h"
 
 #define REGISTER_OUTDEV(X,x) { \
-          extern AVOutputFormat x##_muxer; \
-          if(CONFIG_##X##_OUTDEV)  av_register_output_format(&x##_muxer); }
+          extern AVOutputFormat ff_##x##_muxer; \
+          if(CONFIG_##X##_OUTDEV)  av_register_output_format(&ff_##x##_muxer); }
 #define REGISTER_INDEV(X,x) { \
-          extern AVInputFormat x##_demuxer; \
-          if(CONFIG_##X##_INDEV)   av_register_input_format(&x##_demuxer); }
+          extern AVInputFormat ff_##x##_demuxer; \
+          if(CONFIG_##X##_INDEV)   av_register_input_format(&ff_##x##_demuxer); }
 #define REGISTER_INOUTDEV(X,x)  REGISTER_OUTDEV(X,x); REGISTER_INDEV(X,x)
 
 void avdevice_register_all(void)

libavdevice/alsa-audio-dec.c

@@ -163,7 +163,7 @@ static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat alsa_demuxer = {
+AVInputFormat ff_alsa_demuxer = {
     "alsa",
     NULL_IF_CONFIG_SMALL("ALSA audio input"),
     sizeof(AlsaData),

libavdevice/alsa-audio-enc.c

@@ -93,7 +93,7 @@ static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat alsa_muxer = {
+AVOutputFormat ff_alsa_muxer = {
     "alsa",
     NULL_IF_CONFIG_SMALL("ALSA audio output"),
     "",

libavdevice/bktr.c

@@ -314,7 +314,7 @@ static int grab_read_close(AVFormatContext *s1)
     return 0;
 }
 
-AVInputFormat bktr_demuxer = {
+AVInputFormat ff_bktr_demuxer = {
     "bktr",
     NULL_IF_CONFIG_SMALL("video grab"),
     sizeof(VideoData),

libavdevice/dv1394.c

@@ -227,7 +227,7 @@ static int dv1394_close(AVFormatContext * context)
     return 0;
 }
 
-AVInputFormat dv1394_demuxer = {
+AVInputFormat ff_dv1394_demuxer = {
     .name           = "dv1394",
     .long_name      = NULL_IF_CONFIG_SMALL("DV1394 A/V grab"),
     .priv_data_size = sizeof(struct dv1394_data),

libavdevice/jack_audio.c

@@ -314,7 +314,7 @@ static int audio_read_close(AVFormatContext *context)
     return 0;
 }
 
-AVInputFormat jack_demuxer = {
+AVInputFormat ff_jack_demuxer = {
     "jack",
     NULL_IF_CONFIG_SMALL("JACK Audio Connection Kit"),
     sizeof(JackData),

libavdevice/libdc1394.c

@@ -348,7 +348,7 @@ static int dc1394_v2_close(AVFormatContext * context)
     return 0;
 }
 
-AVInputFormat libdc1394_demuxer = {
+AVInputFormat ff_libdc1394_demuxer = {
     .name           = "libdc1394",
     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
     .priv_data_size = sizeof(struct dc1394_data),
@@ -360,7 +360,7 @@ AVInputFormat libdc1394_demuxer = {
 
 #endif
 #if HAVE_LIBDC1394_1
-AVInputFormat libdc1394_demuxer = {
+AVInputFormat ff_libdc1394_demuxer = {
     .name           = "libdc1394",
     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
     .priv_data_size = sizeof(struct dc1394_data),

libavdevice/oss_audio.c

@@ -293,7 +293,7 @@ static int audio_read_close(AVFormatContext *s1)
 }
 
 #if CONFIG_OSS_INDEV
-AVInputFormat oss_demuxer = {
+AVInputFormat ff_oss_demuxer = {
     "oss",
     NULL_IF_CONFIG_SMALL("Open Sound System capture"),
     sizeof(AudioData),
@@ -306,7 +306,7 @@ AVInputFormat oss_demuxer = {
 #endif
 
 #if CONFIG_OSS_OUTDEV
-AVOutputFormat oss_muxer = {
+AVOutputFormat ff_oss_muxer = {
     "oss",
     NULL_IF_CONFIG_SMALL("Open Sound System playback"),
     "",

libavdevice/v4l.c

@@ -339,7 +339,7 @@ static int grab_read_close(AVFormatContext *s1)
     return 0;
 }
 
-AVInputFormat v4l_demuxer = {
+AVInputFormat ff_v4l_demuxer = {
     "video4linux",
     NULL_IF_CONFIG_SMALL("Video4Linux device grab"),
     sizeof(VideoData),

libavdevice/v4l2.c

@@ -680,7 +680,7 @@ static int v4l2_read_close(AVFormatContext *s1)
     return 0;
 }
 
-AVInputFormat v4l2_demuxer = {
+AVInputFormat ff_v4l2_demuxer = {
     "video4linux2",
     NULL_IF_CONFIG_SMALL("Video4Linux2 device grab"),
     sizeof(struct video_data),

libavdevice/vfwcap.c

@@ -452,7 +452,7 @@ static int vfw_read_packet(AVFormatContext *s, AVPacket *pkt)
     return pkt->size;
 }
 
-AVInputFormat vfwcap_demuxer = {
+AVInputFormat ff_vfwcap_demuxer = {
     "vfwcap",
     NULL_IF_CONFIG_SMALL("VFW video capture"),
     sizeof(struct vfw_ctx),

libavdevice/x11grab.c

@@ -442,7 +442,7 @@ x11grab_read_close(AVFormatContext *s1)
 }
 
 /** x11 grabber device demuxer declaration */
-AVInputFormat x11_grab_device_demuxer =
+AVInputFormat ff_x11_grab_device_demuxer =
 {
     "x11grab",
     NULL_IF_CONFIG_SMALL("X11grab"),

libavformat/4xm.c

@@ -343,7 +343,7 @@ static int fourxm_read_close(AVFormatContext *s)
     return 0;
 }
 
-AVInputFormat fourxm_demuxer = {
+AVInputFormat ff_fourxm_demuxer = {
     "4xm",
     NULL_IF_CONFIG_SMALL("4X Technologies format"),
     sizeof(FourxmDemuxContext),

libavformat/a64.c

@@ -164,7 +164,7 @@ static int a64_write_trailer(struct AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat a64_muxer = {
+AVOutputFormat ff_a64_muxer = {
     .name = "a64",
     .long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
     .mime_type = NULL,

libavformat/aacdec.c

@@ -81,7 +81,7 @@ static int adts_aac_read_header(AVFormatContext *s,
     return 0;
 }
 
-AVInputFormat aac_demuxer = {
+AVInputFormat ff_aac_demuxer = {
     "aac",
     NULL_IF_CONFIG_SMALL("raw ADTS AAC"),
     0,

libavformat/ac3dec.c

@@ -70,7 +70,7 @@ static int ac3_probe(AVProbeData *p)
     return ac3_eac3_probe(p, CODEC_ID_AC3);
 }
 
-AVInputFormat ac3_demuxer = {
+AVInputFormat ff_ac3_demuxer = {
     "ac3",
     NULL_IF_CONFIG_SMALL("raw AC-3"),
     0,
@@ -89,7 +89,7 @@ static int eac3_probe(AVProbeData *p)
     return ac3_eac3_probe(p, CODEC_ID_EAC3);
 }
 
-AVInputFormat eac3_demuxer = {
+AVInputFormat ff_eac3_demuxer = {
     "eac3",
     NULL_IF_CONFIG_SMALL("raw E-AC-3"),
     0,

libavformat/adtsenc.c

@@ -137,7 +137,7 @@ static int adts_write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat adts_muxer = {
+AVOutputFormat ff_adts_muxer = {
     "adts",
     NULL_IF_CONFIG_SMALL("ADTS AAC"),
     "audio/aac",

libavformat/aea.c

@@ -93,7 +93,7 @@ static int aea_read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat aea_demuxer = {
+AVInputFormat ff_aea_demuxer = {
     "aea",
     NULL_IF_CONFIG_SMALL("MD STUDIO audio"),
     0,

libavformat/aiffdec.c

@@ -311,7 +311,7 @@ static int aiff_read_packet(AVFormatContext *s,
     return 0;
 }
 
-AVInputFormat aiff_demuxer = {
+AVInputFormat ff_aiff_demuxer = {
     "aiff",
     NULL_IF_CONFIG_SMALL("Audio IFF"),
     sizeof(AIFFInputContext),

libavformat/aiffenc.c

@@ -145,7 +145,7 @@ static int aiff_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat aiff_muxer = {
+AVOutputFormat ff_aiff_muxer = {
     "aiff",
     NULL_IF_CONFIG_SMALL("Audio IFF"),
     "audio/aiff",

libavformat/allformats.c

@@ -23,18 +23,18 @@
 #include "rdt.h"
 
 #define REGISTER_MUXER(X,x) { \
-    extern AVOutputFormat x##_muxer; \
-    if(CONFIG_##X##_MUXER) av_register_output_format(&x##_muxer); }
+    extern AVOutputFormat ff_##x##_muxer; \
+    if(CONFIG_##X##_MUXER) av_register_output_format(&ff_##x##_muxer); }
 
 #define REGISTER_DEMUXER(X,x) { \
-    extern AVInputFormat x##_demuxer; \
-    if(CONFIG_##X##_DEMUXER) av_register_input_format(&x##_demuxer); }
+    extern AVInputFormat ff_##x##_demuxer; \
+    if(CONFIG_##X##_DEMUXER) av_register_input_format(&ff_##x##_demuxer); }
 
 #define REGISTER_MUXDEMUX(X,x)  REGISTER_MUXER(X,x); REGISTER_DEMUXER(X,x)
 
 #define REGISTER_PROTOCOL(X,x) { \
-    extern URLProtocol x##_protocol; \
-    if(CONFIG_##X##_PROTOCOL) av_register_protocol2(&x##_protocol, sizeof(x##_protocol)); }
+    extern URLProtocol ff_##x##_protocol; \
+    if(CONFIG_##X##_PROTOCOL) av_register_protocol2(&ff_##x##_protocol, sizeof(ff_##x##_protocol)); }
 
 void av_register_all(void)
 {

libavformat/amr.c

@@ -169,7 +169,7 @@ static int amr_read_packet(AVFormatContext *s,
 }
 
 #if CONFIG_AMR_DEMUXER
-AVInputFormat amr_demuxer = {
+AVInputFormat ff_amr_demuxer = {
     "amr",
     NULL_IF_CONFIG_SMALL("3GPP AMR file format"),
     0, /*priv_data_size*/
@@ -181,7 +181,7 @@ AVInputFormat amr_demuxer = {
 #endif
 
 #if CONFIG_AMR_MUXER
-AVOutputFormat amr_muxer = {
+AVOutputFormat ff_amr_muxer = {
     "amr",
     NULL_IF_CONFIG_SMALL("3GPP AMR file format"),
     "audio/amr",

libavformat/anm.c

@@ -225,7 +225,7 @@ repeat:
     return 0;
 }
 
-AVInputFormat anm_demuxer = {
+AVInputFormat ff_anm_demuxer = {
     "anm",
     NULL_IF_CONFIG_SMALL("Deluxe Paint Animation"),
     sizeof(AnmDemuxContext),

libavformat/apc.c

@@ -80,7 +80,7 @@ static int apc_read_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat apc_demuxer = {
+AVInputFormat ff_apc_demuxer = {
     "apc",
     NULL_IF_CONFIG_SMALL("CRYO APC format"),
     0,

libavformat/ape.c

@@ -391,7 +391,7 @@ static int ape_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
     return 0;
 }
 
-AVInputFormat ape_demuxer = {
+AVInputFormat ff_ape_demuxer = {
     "ape",
     NULL_IF_CONFIG_SMALL("Monkey's Audio"),
     sizeof(APEContext),

libavformat/applehttp.c

@@ -579,7 +579,7 @@ static int applehttp_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat applehttp_demuxer = {
+AVInputFormat ff_applehttp_demuxer = {
     "applehttp",
     NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming format"),
     sizeof(AppleHTTPContext),

libavformat/asf.h

@@ -229,7 +229,7 @@ extern const AVMetadataConv ff_asf_metadata_conv[];
 
 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
 
-extern AVInputFormat asf_demuxer;
+extern AVInputFormat ff_asf_demuxer;
 int ff_guidcmp(const void *g1, const void *g2);
 void ff_get_guid(ByteIOContext *s, ff_asf_guid *g);
 

libavformat/asfdec.c

@@ -1203,7 +1203,7 @@ static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int
     return 0;
 }
 
-AVInputFormat asf_demuxer = {
+AVInputFormat ff_asf_demuxer = {
     "asf",
     NULL_IF_CONFIG_SMALL("ASF format"),
     sizeof(ASFContext),

libavformat/asfenc.c

@@ -855,7 +855,7 @@ static int asf_write_trailer(AVFormatContext *s)
 }
 
 #if CONFIG_ASF_MUXER
-AVOutputFormat asf_muxer = {
+AVOutputFormat ff_asf_muxer = {
     "asf",
     NULL_IF_CONFIG_SMALL("ASF format"),
     "video/x-ms-asf",
@@ -876,7 +876,7 @@ AVOutputFormat asf_muxer = {
 #endif
 
 #if CONFIG_ASF_STREAM_MUXER
-AVOutputFormat asf_stream_muxer = {
+AVOutputFormat ff_asf_stream_muxer = {
     "asf_stream",
     NULL_IF_CONFIG_SMALL("ASF format"),
     "video/x-ms-asf",

libavformat/assdec.c

@@ -202,7 +202,7 @@ static int read_seek2(AVFormatContext *s, int stream_index,
     return 0;
 }
 
-AVInputFormat ass_demuxer = {
+AVInputFormat ff_ass_demuxer = {
     .name           = "ass",
     .long_name      = NULL_IF_CONFIG_SMALL("Advanced SubStation Alpha subtitle format"),
     .priv_data_size = sizeof(ASSContext),

libavformat/assenc.c

@@ -77,7 +77,7 @@ static int write_trailer(AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat ass_muxer = {
+AVOutputFormat ff_ass_muxer = {
     .name           = "ass",
     .long_name      = NULL_IF_CONFIG_SMALL("Advanced SubStation Alpha subtitle format"),
     .mime_type      = "text/x-ssa",

libavformat/au.c

@@ -183,7 +183,7 @@ static int au_read_packet(AVFormatContext *s,
 }
 
 #if CONFIG_AU_DEMUXER
-AVInputFormat au_demuxer = {
+AVInputFormat ff_au_demuxer = {
     "au",
     NULL_IF_CONFIG_SMALL("SUN AU format"),
     0,
@@ -197,7 +197,7 @@ AVInputFormat au_demuxer = {
 #endif
 
 #if CONFIG_AU_MUXER
-AVOutputFormat au_muxer = {
+AVOutputFormat ff_au_muxer = {
     "au",
     NULL_IF_CONFIG_SMALL("SUN AU format"),
     "audio/basic",

libavformat/avidec.c

@@ -1373,7 +1373,7 @@ static int avi_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat avi_demuxer = {
+AVInputFormat ff_avi_demuxer = {
     "avi",
     NULL_IF_CONFIG_SMALL("AVI format"),
     sizeof(AVIContext),

libavformat/avienc.c

@@ -630,7 +630,7 @@ static int avi_write_trailer(AVFormatContext *s)
     return res;
 }
 
-AVOutputFormat avi_muxer = {
+AVOutputFormat ff_avi_muxer = {
     "avi",
     NULL_IF_CONFIG_SMALL("AVI format"),
     "video/x-msvideo",

libavformat/avisynth.c

@@ -207,7 +207,7 @@ static int avisynth_read_seek(AVFormatContext *s, int stream_index, int64_t pts,
   return 0;
 }
 
-AVInputFormat avisynth_demuxer = {
+AVInputFormat ff_avisynth_demuxer = {
   "avs",
   NULL_IF_CONFIG_SMALL("AVISynth"),
   sizeof(AVISynthContext),

libavformat/avs.c

@@ -215,7 +215,7 @@ static int avs_read_close(AVFormatContext * s)
     return 0;
 }
 
-AVInputFormat avs_demuxer = {
+AVInputFormat ff_avs_demuxer = {
     "avs",
     NULL_IF_CONFIG_SMALL("AVS format"),
     sizeof(AvsFormat),

libavformat/bethsoftvid.c

@@ -224,7 +224,7 @@ static int vid_read_packet(AVFormatContext *s,
     return 0;
 }
 
-AVInputFormat bethsoftvid_demuxer = {
+AVInputFormat ff_bethsoftvid_demuxer = {
     "bethsoftvid",
     NULL_IF_CONFIG_SMALL("Bethesda Softworks VID format"),
     sizeof(BVID_DemuxContext),

libavformat/bfi.c

@@ -158,7 +158,7 @@ static int bfi_read_packet(AVFormatContext * s, AVPacket * pkt)
     return ret;
 }
 
-AVInputFormat bfi_demuxer = {
+AVInputFormat ff_bfi_demuxer = {
     "bfi",
     NULL_IF_CONFIG_SMALL("Brute Force & Ignorance"),
     sizeof(BFIContext),

libavformat/bink.c

@@ -257,7 +257,7 @@ static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, in
     return 0;
 }
 
-AVInputFormat bink_demuxer = {
+AVInputFormat ff_bink_demuxer = {
     "bink",
     NULL_IF_CONFIG_SMALL("Bink"),
     sizeof(BinkDemuxContext),

libavformat/c93.c

@@ -192,7 +192,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat c93_demuxer = {
+AVInputFormat ff_c93_demuxer = {
     "c93",
     NULL_IF_CONFIG_SMALL("Interplay C93"),
     sizeof(C93DemuxContext),

libavformat/cafdec.c

@@ -381,7 +381,7 @@ static int read_seek(AVFormatContext *s, int stream_index,
     return 0;
 }
 
-AVInputFormat caf_demuxer = {
+AVInputFormat ff_caf_demuxer = {
     "caf",
     NULL_IF_CONFIG_SMALL("Apple Core Audio Format"),
     sizeof(CaffContext),

libavformat/cavsvideodec.c

@@ -65,7 +65,7 @@ static int cavsvideo_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat cavsvideo_demuxer = {
+AVInputFormat ff_cavsvideo_demuxer = {
     "cavsvideo",
     NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),
     0,

libavformat/cdg.c

@@ -55,7 +55,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat cdg_demuxer = {
+AVInputFormat ff_cdg_demuxer = {
     "cdg",
     NULL_IF_CONFIG_SMALL("CD Graphics Format"),
     0,

libavformat/concat.c

@@ -188,7 +188,7 @@ static int64_t concat_seek(URLContext *h, int64_t pos, int whence)
     return result;
 }
 
-URLProtocol concat_protocol = {
+URLProtocol ff_concat_protocol = {
     "concat",
     concat_open,
     concat_read,

libavformat/crcenc.c

@@ -54,7 +54,7 @@ static int crc_write_trailer(struct AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat crc_muxer = {
+AVOutputFormat ff_crc_muxer = {
     "crc",
     NULL_IF_CONFIG_SMALL("CRC testing format"),
     NULL,

libavformat/daud.c

@@ -65,7 +65,7 @@ static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
 }
 
 #if CONFIG_DAUD_DEMUXER
-AVInputFormat daud_demuxer = {
+AVInputFormat ff_daud_demuxer = {
     "daud",
     NULL_IF_CONFIG_SMALL("D-Cinema audio format"),
     0,
@@ -79,7 +79,7 @@ AVInputFormat daud_demuxer = {
 #endif
 
 #if CONFIG_DAUD_MUXER
-AVOutputFormat daud_muxer =
+AVOutputFormat ff_daud_muxer =
 {
     "daud",
     NULL_IF_CONFIG_SMALL("D-Cinema audio format"),

libavformat/diracdec.c

@@ -31,7 +31,7 @@ static int dirac_probe(AVProbeData *p)
         return 0;
 }
 
-AVInputFormat dirac_demuxer = {
+AVInputFormat ff_dirac_demuxer = {
     "dirac",
     NULL_IF_CONFIG_SMALL("raw Dirac"),
     0,

libavformat/dnxhddec.c

@@ -42,7 +42,7 @@ static int dnxhd_probe(AVProbeData *p)
     return AVPROBE_SCORE_MAX;
 }
 
-AVInputFormat dnxhd_demuxer = {
+AVInputFormat ff_dnxhd_demuxer = {
     "dnxhd",
     NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
     0,

libavformat/dsicin.c

@@ -216,7 +216,7 @@ static int cin_read_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat dsicin_demuxer = {
+AVInputFormat ff_dsicin_demuxer = {
     "dsicin",
     NULL_IF_CONFIG_SMALL("Delphine Software International CIN format"),
     sizeof(CinDemuxContext),

libavformat/dtsdec.c

@@ -65,7 +65,7 @@ static int dts_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat dts_demuxer = {
+AVInputFormat ff_dts_demuxer = {
     "dts",
     NULL_IF_CONFIG_SMALL("raw DTS"),
     0,

libavformat/dv.c

@@ -518,7 +518,7 @@ static int dv_probe(AVProbeData *p)
 }
 
 #if CONFIG_DV_DEMUXER
-AVInputFormat dv_demuxer = {
+AVInputFormat ff_dv_demuxer = {
     "dv",
     NULL_IF_CONFIG_SMALL("DV video format"),
     sizeof(RawDVContext),

libavformat/dvenc.c

@@ -399,7 +399,7 @@ static int dv_write_trailer(struct AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat dv_muxer = {
+AVOutputFormat ff_dv_muxer = {
     "dv",
     NULL_IF_CONFIG_SMALL("DV video format"),
     NULL,

libavformat/dxa.c

@@ -209,7 +209,7 @@ static int dxa_read_packet(AVFormatContext *s, AVPacket *pkt)
     return AVERROR(EIO);
 }
 
-AVInputFormat dxa_demuxer = {
+AVInputFormat ff_dxa_demuxer = {
     "dxa",
     NULL_IF_CONFIG_SMALL("DXA"),
     sizeof(DXAContext),

libavformat/eacdata.c

@@ -90,7 +90,7 @@ static int cdata_read_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat ea_cdata_demuxer = {
+AVInputFormat ff_ea_cdata_demuxer = {
     "ea_cdata",
     NULL_IF_CONFIG_SMALL("Electronic Arts cdata"),
     sizeof(CdataDemuxContext),

libavformat/electronicarts.c

@@ -568,7 +568,7 @@ get_video_packet:
     return ret;
 }
 
-AVInputFormat ea_demuxer = {
+AVInputFormat ff_ea_demuxer = {
     "ea",
     NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
     sizeof(EaDemuxContext),

libavformat/ffmdec.c

@@ -518,7 +518,7 @@ static int ffm_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat ffm_demuxer = {
+AVInputFormat ff_ffm_demuxer = {
     "ffm",
     NULL_IF_CONFIG_SMALL("FFM (FFserver live feed) format"),
     sizeof(FFMContext),

libavformat/ffmenc.c

@@ -240,7 +240,7 @@ static int ffm_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat ffm_muxer = {
+AVOutputFormat ff_ffm_muxer = {
     "ffm",
     NULL_IF_CONFIG_SMALL("FFM (FFserver live feed) format"),
     "",

libavformat/ffmetadec.c

@@ -163,7 +163,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
     return AVERROR_EOF;
 }
 
-AVInputFormat ffmetadata_demuxer = {
+AVInputFormat ff_ffmetadata_demuxer = {
     .name        = "ffmetadata",
     .long_name   = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text format"),
     .read_probe  = probe,

libavformat/ffmetaenc.c

@@ -89,7 +89,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat ffmetadata_muxer = {
+AVOutputFormat ff_ffmetadata_muxer = {
     .name          = "ffmetadata",
     .long_name     = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text format"),
     .extensions    = "ffmeta",

libavformat/file.c

@@ -94,7 +94,7 @@ static int file_close(URLContext *h)
     return close(fd);
 }
 
-URLProtocol file_protocol = {
+URLProtocol ff_file_protocol = {
     "file",
     file_open,
     file_read,
@@ -130,7 +130,7 @@ static int pipe_open(URLContext *h, const char *filename, int flags)
     return 0;
 }
 
-URLProtocol pipe_protocol = {
+URLProtocol ff_pipe_protocol = {
     "pipe",
     pipe_open,
     file_read,

libavformat/filmstripdec.c

@@ -98,7 +98,7 @@ static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, in
     return 0;
 }
 
-AVInputFormat filmstrip_demuxer = {
+AVInputFormat ff_filmstrip_demuxer = {
     "filmstrip",
     NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
     sizeof(FilmstripDemuxContext),

libavformat/filmstripenc.c

@@ -71,7 +71,7 @@ static int write_trailer(AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat filmstrip_muxer = {
+AVOutputFormat ff_filmstrip_muxer = {
     "filmstrip",
     NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
     NULL,

libavformat/flacdec.c

@@ -123,7 +123,7 @@ static int flac_probe(AVProbeData *p)
     else                                            return AVPROBE_SCORE_MAX/2;
 }
 
-AVInputFormat flac_demuxer = {
+AVInputFormat ff_flac_demuxer = {
     "flac",
     NULL_IF_CONFIG_SMALL("raw FLAC"),
     0,

libavformat/flacenc.c

@@ -118,7 +118,7 @@ static int flac_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat flac_muxer = {
+AVOutputFormat ff_flac_muxer = {
     "flac",
     NULL_IF_CONFIG_SMALL("raw FLAC"),
     "audio/x-flac",

libavformat/flic.c

@@ -259,7 +259,7 @@ static int flic_read_packet(AVFormatContext *s,
     return ret;
 }
 
-AVInputFormat flic_demuxer = {
+AVInputFormat ff_flic_demuxer = {
     "flic",
     NULL_IF_CONFIG_SMALL("FLI/FLC/FLX animation format"),
     sizeof(FlicDemuxContext),

libavformat/flvdec.c

@@ -491,7 +491,7 @@ static int flv_read_seek2(AVFormatContext *s, int stream_index,
 }
 #endif
 
-AVInputFormat flv_demuxer = {
+AVInputFormat ff_flv_demuxer = {
     "flv",
     NULL_IF_CONFIG_SMALL("FLV format"),
     sizeof(FLVContext),

libavformat/flvenc.c

@@ -437,7 +437,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat flv_muxer = {
+AVOutputFormat ff_flv_muxer = {
     "flv",
     NULL_IF_CONFIG_SMALL("FLV format"),
     "video/x-flv",

libavformat/framecrcenc.c

@@ -33,7 +33,7 @@ static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat framecrc_muxer = {
+AVOutputFormat ff_framecrc_muxer = {
     "framecrc",
     NULL_IF_CONFIG_SMALL("framecrc testing format"),
     NULL,

libavformat/gif.c

@@ -344,7 +344,7 @@ static int gif_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat gif_muxer = {
+AVOutputFormat ff_gif_muxer = {
     "gif",
     NULL_IF_CONFIG_SMALL("GIF Animation"),
     "image/gif",

libavformat/gopher.c

@@ -119,7 +119,7 @@ static int gopher_read(URLContext *h, uint8_t *buf, int size)
 }
 
 
-URLProtocol gopher_protocol = {
+URLProtocol ff_gopher_protocol = {
     "gopher",
     gopher_open,
     gopher_read,

libavformat/gxf.c

@@ -515,7 +515,7 @@ static int64_t gxf_read_timestamp(AVFormatContext *s, int stream_index,
     return res;
 }
 
-AVInputFormat gxf_demuxer = {
+AVInputFormat ff_gxf_demuxer = {
     "gxf",
     NULL_IF_CONFIG_SMALL("GXF format"),
     0,

libavformat/gxfenc.c

@@ -927,7 +927,7 @@ static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pk
                                av_interleave_packet_per_dts, gxf_compare_field_nb);
 }
 
-AVOutputFormat gxf_muxer = {
+AVOutputFormat ff_gxf_muxer = {
     "gxf",
     NULL_IF_CONFIG_SMALL("GXF format"),
     NULL,

libavformat/h261dec.c

@@ -62,7 +62,7 @@ static int h261_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat h261_demuxer = {
+AVInputFormat ff_h261_demuxer = {
     "h261",
     NULL_IF_CONFIG_SMALL("raw H.261"),
     0,

libavformat/h263dec.c

@@ -64,7 +64,7 @@ static int h263_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat h263_demuxer = {
+AVInputFormat ff_h263_demuxer = {
     "h263",
     NULL_IF_CONFIG_SMALL("raw H.263"),
     0,

libavformat/h264dec.c

@@ -67,7 +67,7 @@ static int h264_probe(AVProbeData *p)
     return 0;
 }
 
-AVInputFormat h264_demuxer = {
+AVInputFormat ff_h264_demuxer = {
     "h264",
     NULL_IF_CONFIG_SMALL("raw H.264 video format"),
     0,

libavformat/http.c

@@ -503,7 +503,7 @@ http_get_file_handle(URLContext *h)
     return url_get_file_handle(s->hd);
 }
 
-URLProtocol http_protocol = {
+URLProtocol ff_http_protocol = {
     "http",
     http_open,
     http_read,

libavformat/idcin.c

@@ -286,7 +286,7 @@ static int idcin_read_packet(AVFormatContext *s,
     return ret;
 }
 
-AVInputFormat idcin_demuxer = {
+AVInputFormat ff_idcin_demuxer = {
     "idcin",
     NULL_IF_CONFIG_SMALL("id Cinematic format"),
     sizeof(IdcinDemuxContext),

libavformat/idroqdec.c

@@ -216,7 +216,7 @@ static int roq_read_packet(AVFormatContext *s,
     return ret;
 }
 
-AVInputFormat roq_demuxer = {
+AVInputFormat ff_roq_demuxer = {
     "RoQ",
     NULL_IF_CONFIG_SMALL("id RoQ format"),
     sizeof(RoqDemuxContext),

libavformat/idroqenc.c

@@ -35,7 +35,7 @@ static int roq_write_header(struct AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat roq_muxer =
+AVOutputFormat ff_roq_muxer =
 {
     "RoQ",
     NULL_IF_CONFIG_SMALL("raw id RoQ format"),

libavformat/iff.c

@@ -314,7 +314,7 @@ static int iff_read_packet(AVFormatContext *s,
     return ret;
 }
 
-AVInputFormat iff_demuxer = {
+AVInputFormat ff_iff_demuxer = {
     "IFF",
     NULL_IF_CONFIG_SMALL("IFF format"),
     sizeof(IffDemuxContext),

libavformat/img2.c

@@ -412,7 +412,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
 
 /* input */
 #if CONFIG_IMAGE2_DEMUXER
-AVInputFormat image2_demuxer = {
+AVInputFormat ff_image2_demuxer = {
     .name           = "image2",
     .long_name      = NULL_IF_CONFIG_SMALL("image2 sequence"),
     .priv_data_size = sizeof(VideoData),
@@ -423,7 +423,7 @@ AVInputFormat image2_demuxer = {
 };
 #endif
 #if CONFIG_IMAGE2PIPE_DEMUXER
-AVInputFormat image2pipe_demuxer = {
+AVInputFormat ff_image2pipe_demuxer = {
     .name           = "image2pipe",
     .long_name      = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
     .priv_data_size = sizeof(VideoData),
@@ -434,7 +434,7 @@ AVInputFormat image2pipe_demuxer = {
 
 /* output */
 #if CONFIG_IMAGE2_MUXER
-AVOutputFormat image2_muxer = {
+AVOutputFormat ff_image2_muxer = {
     .name           = "image2",
     .long_name      = NULL_IF_CONFIG_SMALL("image2 sequence"),
     .extensions     = "bmp,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
@@ -447,7 +447,7 @@ AVOutputFormat image2_muxer = {
 };
 #endif
 #if CONFIG_IMAGE2PIPE_MUXER
-AVOutputFormat image2pipe_muxer = {
+AVOutputFormat ff_image2pipe_muxer = {
     .name           = "image2pipe",
     .long_name      = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
     .priv_data_size = sizeof(VideoData),

libavformat/ingenientdec.c

@@ -58,7 +58,7 @@ static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat ingenient_demuxer = {
+AVInputFormat ff_ingenient_demuxer = {
     "ingenient",
     NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
     0,

libavformat/ipmovie.c

@@ -620,7 +620,7 @@ static int ipmovie_read_packet(AVFormatContext *s,
     return ret;
 }
 
-AVInputFormat ipmovie_demuxer = {
+AVInputFormat ff_ipmovie_demuxer = {
     "ipmovie",
     NULL_IF_CONFIG_SMALL("Interplay MVE format"),
     sizeof(IPMVEContext),

libavformat/iss.c

@@ -122,7 +122,7 @@ static int iss_read_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat iss_demuxer = {
+AVInputFormat ff_iss_demuxer = {
     "ISS",
     NULL_IF_CONFIG_SMALL("Funcom ISS format"),
     sizeof(IssDemuxContext),

libavformat/iv8.c

@@ -84,7 +84,7 @@ retry:
     return ret;
 }
 
-AVInputFormat iv8_demuxer = {
+AVInputFormat ff_iv8_demuxer = {
     "iv8",
     NULL_IF_CONFIG_SMALL("A format generated by IndigoVision 8000 video server"),
     0,

libavformat/ivfdec.c

@@ -79,7 +79,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat ivf_demuxer = {
+AVInputFormat ff_ivf_demuxer = {
     "ivf",
     NULL_IF_CONFIG_SMALL("On2 IVF"),
     0,

libavformat/ivfenc.c

@@ -58,7 +58,7 @@ static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat ivf_muxer = {
+AVOutputFormat ff_ivf_muxer = {
     .name = "ivf",
     .long_name = NULL_IF_CONFIG_SMALL("On2 IVF"),
     .extensions = "ivf",

libavformat/libnut.c

@@ -150,7 +150,7 @@ static int nut_write_trailer(AVFormatContext * avf) {
     return 0;
 }
 
-AVOutputFormat libnut_muxer = {
+AVOutputFormat ff_libnut_muxer = {
     "libnut",
     "nut format",
     "video/x-nut",
@@ -297,7 +297,7 @@ static int nut_read_close(AVFormatContext *s) {
     return 0;
 }
 
-AVInputFormat libnut_demuxer = {
+AVInputFormat ff_libnut_demuxer = {
     "libnut",
     NULL_IF_CONFIG_SMALL("NUT format"),
     sizeof(NUTContext),

libavformat/librtmp.c

@@ -157,7 +157,7 @@ static int rtmp_get_file_handle(URLContext *s)
     return RTMP_Socket(r);
 }
 
-URLProtocol rtmp_protocol = {
+URLProtocol ff_rtmp_protocol = {
     "rtmp",
     rtmp_open,
     rtmp_read,
@@ -170,7 +170,7 @@ URLProtocol rtmp_protocol = {
     rtmp_get_file_handle
 };
 
-URLProtocol rtmpt_protocol = {
+URLProtocol ff_rtmpt_protocol = {
     "rtmpt",
     rtmp_open,
     rtmp_read,
@@ -183,7 +183,7 @@ URLProtocol rtmpt_protocol = {
     rtmp_get_file_handle
 };
 
-URLProtocol rtmpe_protocol = {
+URLProtocol ff_rtmpe_protocol = {
     "rtmpe",
     rtmp_open,
     rtmp_read,
@@ -196,7 +196,7 @@ URLProtocol rtmpe_protocol = {
     rtmp_get_file_handle
 };
 
-URLProtocol rtmpte_protocol = {
+URLProtocol ff_rtmpte_protocol = {
     "rtmpte",
     rtmp_open,
     rtmp_read,
@@ -209,7 +209,7 @@ URLProtocol rtmpte_protocol = {
     rtmp_get_file_handle
 };
 
-URLProtocol rtmps_protocol = {
+URLProtocol ff_rtmps_protocol = {
     "rtmps",
     rtmp_open,
     rtmp_read,

libavformat/lmlm4.c

@@ -117,7 +117,7 @@ static int lmlm4_read_packet(AVFormatContext *s, AVPacket *pkt) {
     return ret;
 }
 
-AVInputFormat lmlm4_demuxer = {
+AVInputFormat ff_lmlm4_demuxer = {
     "lmlm4",
     NULL_IF_CONFIG_SMALL("lmlm4 raw format"),
     0,

libavformat/lxfdec.c

@@ -336,7 +336,7 @@ static int lxf_read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat lxf_demuxer = {
+AVInputFormat ff_lxf_demuxer = {
     .name           = "lxf",
     .long_name      = NULL_IF_CONFIG_SMALL("VR native stream format (LXF)"),
     .priv_data_size = sizeof(LXFDemuxContext),

libavformat/m4vdec.c

@@ -49,7 +49,7 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
     return 0;
 }
 
-AVInputFormat m4v_demuxer = {
+AVInputFormat ff_m4v_demuxer = {
     "m4v",
     NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),
     0,

libavformat/matroskadec.c

@@ -1920,7 +1920,7 @@ static int matroska_read_close(AVFormatContext *s)
     return 0;
 }
 
-AVInputFormat matroska_demuxer = {
+AVInputFormat ff_matroska_demuxer = {
     "matroska,webm",
     NULL_IF_CONFIG_SMALL("Matroska/WebM file format"),
     sizeof(MatroskaDemuxContext),

libavformat/matroskaenc.c

@@ -1177,7 +1177,7 @@ static int mkv_write_trailer(AVFormatContext *s)
 }
 
 #if CONFIG_MATROSKA_MUXER
-AVOutputFormat matroska_muxer = {
+AVOutputFormat ff_matroska_muxer = {
     "matroska",
     NULL_IF_CONFIG_SMALL("Matroska file format"),
     "video/x-matroska",
@@ -1195,7 +1195,7 @@ AVOutputFormat matroska_muxer = {
 #endif
 
 #if CONFIG_WEBM_MUXER
-AVOutputFormat webm_muxer = {
+AVOutputFormat ff_webm_muxer = {
     "webm",
     NULL_IF_CONFIG_SMALL("WebM file format"),
     "video/webm",
@@ -1211,7 +1211,7 @@ AVOutputFormat webm_muxer = {
 #endif
 
 #if CONFIG_MATROSKA_AUDIO_MUXER
-AVOutputFormat matroska_audio_muxer = {
+AVOutputFormat ff_matroska_audio_muxer = {
     "matroska",
     NULL_IF_CONFIG_SMALL("Matroska file format"),
     "audio/x-matroska",

libavformat/md5enc.c

@@ -65,7 +65,7 @@ static int write_trailer(struct AVFormatContext *s)
     return 0;
 }
 
-AVOutputFormat md5_muxer = {
+AVOutputFormat ff_md5_muxer = {
     "md5",
     NULL_IF_CONFIG_SMALL("MD5 testing format"),
     NULL,
@@ -95,7 +95,7 @@ static int framemd5_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVOutputFormat framemd5_muxer = {
+AVOutputFormat ff_framemd5_muxer = {
     "framemd5",
     NULL_IF_CONFIG_SMALL("Per-frame MD5 testing format"),
     NULL,

libavformat/md5proto.c

@@ -82,7 +82,7 @@ static int md5_get_handle(URLContext *h)
     return (intptr_t)h->priv_data;
 }
 
-URLProtocol md5_protocol = {
+URLProtocol ff_md5_protocol = {
     .name                = "md5",
     .url_open            = md5_open,
     .url_write           = md5_write,

libavformat/mm.c

@@ -188,7 +188,7 @@ static int read_packet(AVFormatContext *s,
     return 0;
 }
 
-AVInputFormat mm_demuxer = {
+AVInputFormat ff_mm_demuxer = {
     "mm",
     NULL_IF_CONFIG_SMALL("American Laser Games MM format"),
     sizeof(MmDemuxContext),

libavformat/mmf.c

@@ -291,7 +291,7 @@ static int mmf_read_packet(AVFormatContext *s,
 }
 
 #if CONFIG_MMF_DEMUXER
-AVInputFormat mmf_demuxer = {
+AVInputFormat ff_mmf_demuxer = {
     "mmf",
     NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
     sizeof(MMFContext),
@@ -303,7 +303,7 @@ AVInputFormat mmf_demuxer = {
 };
 #endif
 #if CONFIG_MMF_MUXER
-AVOutputFormat mmf_muxer = {
+AVOutputFormat ff_mmf_muxer = {
     "mmf",
     NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
     "application/vnd.smaf",

libavformat/mmsh.c

@@ -359,7 +359,7 @@ static int mmsh_read(URLContext *h, uint8_t *buf, int size)
     return res;
 }
 
-URLProtocol mmsh_protocol = {
+URLProtocol ff_mmsh_protocol = {
     .name      = "mmsh",
     .url_open  = mmsh_open,
     .url_read  = mmsh_read,

libavformat/mmst.c

@@ -621,7 +621,7 @@ static int mms_read(URLContext *h, uint8_t *buf, int size)
     return result;
 }
 
-URLProtocol mmst_protocol = {
+URLProtocol ff_mmst_protocol = {
     "mmst",
     mms_open,
     mms_read,