In file included from /usr/include/x86_64-linux-gnu/libavutil/avutil.h:296:0,
                 from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/common.h:127:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_clip_c(int a, int amin, int amax)
                                  ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:144:34: error: expected ‘,’ or ‘;’ before ‘int64_t’
 static av_always_inline av_const int64_t av_clip64_c(int64_t a, int64_t amin, int64_t amax)
                                  ^~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:159:34: error: expected ‘,’ or ‘;’ before ‘uint8_t’
 static av_always_inline av_const uint8_t av_clip_uint8_c(int a)
                                  ^~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:170:34: error: expected ‘,’ or ‘;’ before ‘int8_t’
 static av_always_inline av_const int8_t av_clip_int8_c(int a)
                                  ^~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:181:34: error: expected ‘,’ or ‘;’ before ‘uint16_t’
 static av_always_inline av_const uint16_t av_clip_uint16_c(int a)
                                  ^~~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:192:34: error: expected ‘,’ or ‘;’ before ‘int16_t’
 static av_always_inline av_const int16_t av_clip_int16_c(int a)
                                  ^~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:203:34: error: expected ‘,’ or ‘;’ before ‘int32_t’
 static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)
                                  ^~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:215:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_clip_intp2_c(int a, int p)
                                  ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:229:34: error: expected ‘,’ or ‘;’ before ‘unsigned’
 static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
                                  ^~~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:241:34: error: expected ‘,’ or ‘;’ before ‘unsigned’
 static av_always_inline av_const unsigned av_mod_uintp2_c(unsigned a, unsigned p)
                                  ^~~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:253:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
 static av_always_inline int av_sat_add32_c(int a, int b)
                         ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:265:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
 static av_always_inline int av_sat_dadd32_c(int a, int b)
                         ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:277:34: error: expected ‘,’ or ‘;’ before ‘float’
 static av_always_inline av_const float av_clipf_c(float a, float amin, float amax)
                                  ^~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:294:34: error: expected ‘,’ or ‘;’ before ‘double’
 static av_always_inline av_const double av_clipd_c(double a, double amin, double amax)
                                  ^~~~~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:308:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_ceil_log2_c(int x)
                                  ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:318:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_popcount_c(uint32_t x)
                                  ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:332:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_popcount64_c(uint64_t x)
                                  ^~~
/usr/include/x86_64-linux-gnu/libavutil/common.h:337:34: error: expected ‘,’ or ‘;’ before ‘int’
 static av_always_inline av_const int av_parity_c(uint32_t v)
                                  ^~~
In file included from /usr/include/x86_64-linux-gnu/libavutil/mem.h:34:0,
                 from /usr/include/x86_64-linux-gnu/libavutil/common.h:464,
                 from /usr/include/x86_64-linux-gnu/libavutil/avutil.h:296,
                 from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/error.h:109:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘char’
 static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
               ^~~~
In file included from /usr/include/x86_64-linux-gnu/libavutil/common.h:464:0,
                 from /usr/include/x86_64-linux-gnu/libavutil/avutil.h:296,
                 from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/mem.h:209:35: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
 av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t size)
                                   ^~~~
/usr/include/x86_64-linux-gnu/libavutil/mem.h:229:35: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
 av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
                                   ^~~~
/usr/include/x86_64-linux-gnu/libavutil/mem.h:668:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
 static inline int av_size_mult(size_t a, size_t b, size_t *r)
               ^~~
In file included from /usr/include/x86_64-linux-gnu/libavutil/avutil.h:298:0,
                 from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/rational.h:71:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘AVRational’
 static inline AVRational av_make_q(int num, int den)
               ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/rational.h:89:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
 static inline int av_cmp_q(AVRational a, AVRational b){
               ^~~
/usr/include/x86_64-linux-gnu/libavutil/rational.h:104:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘double’
 static inline double av_q2d(AVRational a){
               ^~~~~~
/usr/include/x86_64-linux-gnu/libavutil/rational.h:159:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘AVRational’
 static av_always_inline AVRational av_inv_q(AVRational q)
                         ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/libavutil/mathematics.h:34:0,
                 from /usr/include/x86_64-linux-gnu/libavutil/avutil.h:301,
                 from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/intfloat.h:40:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘float’
 static av_always_inline float av_int2float(uint32_t i)
                         ^~~~~
/usr/include/x86_64-linux-gnu/libavutil/intfloat.h:50:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘uint32_t’
 static av_always_inline uint32_t av_float2int(float f)
                         ^~~~~~~~
/usr/include/x86_64-linux-gnu/libavutil/intfloat.h:60:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘double’
 static av_always_inline double av_int2double(uint64_t i)
                         ^~~~~~
/usr/include/x86_64-linux-gnu/libavutil/intfloat.h:70:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘uint64_t’
 static av_always_inline uint64_t av_double2int(double f)
                         ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/libavutil/samplefmt.h:24:0,
                 from /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:31,
                 from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavutil/avutil.h:308:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
 static inline void *av_x_if_null(const void *p, const void *x)
               ^~~~
In file included from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:323:0,
                 from decode.c:1:
/usr/include/x86_64-linux-gnu/libavformat/avio.h:556:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int64_t’
 static av_always_inline int64_t avio_tell(AVIOContext *s)
                         ^~~~~~~