Remove various unused bindings

include/libavcodec/avcodec.pxd

@@ -1,9 +1,5 @@
 from libc.stdint cimport int64_t, uint16_t, uint32_t, uint8_t
 
-cdef extern from "libavcodec/codec.h":
-    struct AVCodecTag:
-        pass
-
 cdef extern from "libavcodec/packet.h" nogil:
     const AVPacketSideData *av_packet_side_data_get(const AVPacketSideData *sd,
                                                 int nb_sd,
@@ -430,8 +426,6 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         AVChannelLayout ch_layout
         int64_t duration
 
-    cdef AVFrame* avcodec_alloc_frame()
-
     cdef struct AVPacket:
         void *buf  # ptr[AVBufferRef]
         int64_t pts
@@ -457,8 +451,6 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         int align
     )
 
-    cdef void avcodec_free_frame(AVFrame **frame)
-
     cdef AVPacket* av_packet_alloc()
     cdef void av_packet_free(AVPacket **)
     cdef int av_new_packet(AVPacket*, int)
@@ -532,13 +524,6 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         int64_t pts, int64_t dts,
         int64_t pos
     )
-    cdef int av_parser_change(
-        AVCodecParserContext *s,
-        AVCodecContext *avctx,
-        uint8_t **poutbuf, int *poutbuf_size,
-        const uint8_t *buf, int buf_size,
-        int keyframe
-    )
     cdef void av_parser_close(AVCodecParserContext *s)
 
     cdef struct AVCodecParameters:

include/libavcodec/hwaccel.pxd

@@ -9,11 +9,5 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         int methods
         AVHWDeviceType device_type
     cdef const AVCodecHWConfig* avcodec_get_hw_config(const AVCodec *codec, int index)
-    cdef enum:
-        AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
     cdef struct AVHWAccel:
-        char *name
-        AVMediaType type
-        AVCodecID id
-        AVPixelFormat pix_fmt
-        int capabilities
+        pass

include/libavfilter/avfiltergraph.pxd

@@ -1,6 +1,4 @@
-
 cdef extern from "libavfilter/avfilter.h" nogil:
-
     cdef struct AVFilterGraph:
         int nb_filters
         AVFilterContext **filters
@@ -14,13 +12,6 @@ cdef extern from "libavfilter/avfilter.h" nogil:
     cdef AVFilterGraph* avfilter_graph_alloc()
     cdef void avfilter_graph_free(AVFilterGraph **ptr)
 
-    cdef int avfilter_graph_parse2(
-        AVFilterGraph *graph,
-        const char *filter_str,
-        AVFilterInOut **inputs,
-        AVFilterInOut **outputs
-    )
-
     cdef AVFilterContext* avfilter_graph_alloc_filter(
         AVFilterGraph *graph,
         const AVFilter *filter,
@@ -44,7 +35,3 @@ cdef extern from "libavfilter/avfilter.h" nogil:
     )
 
     cdef int avfilter_graph_config(AVFilterGraph *graph, void *logctx)
-
-    cdef char* avfilter_graph_dump(AVFilterGraph *graph, const char *options)
-
-    cdef void avfilter_inout_free(AVFilterInOut **inout_list)

include/libavfilter/buffersink.pxd

@@ -1,6 +1,2 @@
 cdef extern from "libavfilter/buffersink.h" nogil:
-
-    int av_buffersink_get_frame(
-        AVFilterContext *ctx,
-        AVFrame *frame
-    )
+    int av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)

include/libavformat/avformat.pxd

@@ -93,16 +93,6 @@ cdef extern from "libavformat/avformat.h" nogil:
         # const AVCodecTag* const *codec_tag
         const AVClass *priv_class
 
-    cdef struct AVProbeData:
-        unsigned char *buf
-        int buf_size
-        const char *filename
-
-    cdef AVInputFormat* av_probe_input_format(
-        AVProbeData *pd,
-        int is_opened
-    )
-
     # http://ffmpeg.org/doxygen/trunk/structAVOutputFormat.html
     cdef struct AVOutputFormat:
         const char *name
@@ -153,15 +143,6 @@ cdef extern from "libavformat/avformat.h" nogil:
         AVFMT_FLAG_FAST_SEEK
         AVFMT_FLAG_AUTO_BSF
 
-    cdef int av_probe_input_buffer(
-        AVIOContext *pb,
-        AVInputFormat **fmt,
-        const char *filename,
-        void *logctx,
-        unsigned int offset,
-        unsigned int max_probe_size
-    )
-
     cdef int av_find_best_stream(
         AVFormatContext *ic,
         AVMediaType type,

include/libavutil/frame.pxd

@@ -1,14 +1,7 @@
 cdef extern from "libavutil/frame.h" nogil:
-
     cdef AVFrame* av_frame_alloc()
     cdef void av_frame_free(AVFrame**)
-    cdef int av_frame_ref(AVFrame *dst, const AVFrame *src)
-    cdef AVFrame* av_frame_clone(const AVFrame *src)
     cdef void av_frame_unref(AVFrame *frame)
-    cdef void av_frame_move_ref(AVFrame *dst, AVFrame *src)
-    cdef int av_frame_get_buffer(AVFrame *frame, int align)
-    cdef int av_frame_is_writable(AVFrame *frame)
     cdef int av_frame_make_writable(AVFrame *frame)
-    cdef int av_frame_copy(AVFrame *dst, const AVFrame *src)
     cdef int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
     cdef AVFrameSideData* av_frame_get_side_data(AVFrame *frame, AVFrameSideDataType type)

include/libavutil/samplefmt.pxd

@@ -26,37 +26,10 @@ cdef extern from "libavutil/samplefmt.h" nogil:
     cdef AVSampleFormat av_get_packed_sample_fmt(AVSampleFormat sample_fmt)
     cdef AVSampleFormat av_get_planar_sample_fmt(AVSampleFormat sample_fmt)
 
-    cdef int av_samples_alloc(
-        uint8_t** audio_data,
-        int* linesize,
-        int nb_channels,
-        int nb_samples,
-        AVSampleFormat sample_fmt,
-        int align
-    )
-
     cdef int av_samples_get_buffer_size(
         int *linesize,
         int nb_channels,
         int nb_samples,
         AVSampleFormat sample_fmt,
         int align
     )
-
-    cdef int av_samples_fill_arrays(
-        uint8_t **audio_data,
-        int *linesize,
-        const uint8_t *buf,
-        int nb_channels,
-        int nb_samples,
-        AVSampleFormat sample_fmt,
-        int align
-    )
-
-    cdef int av_samples_set_silence(
-        uint8_t **audio_data,
-        int offset,
-        int nb_samples,
-        int nb_channels,
-        AVSampleFormat sample_fmt
-    )

include/libswscale/swscale.pxd

@@ -34,19 +34,6 @@ cdef extern from "libswscale/swscale.h" nogil:
     cdef int SWS_CS_SMPTE240M
     cdef int SWS_CS_DEFAULT
 
-    cdef SwsContext* sws_getContext(
-        int src_width,
-        int src_height,
-        AVPixelFormat src_format,
-        int dst_width,
-        int dst_height,
-        AVPixelFormat dst_format,
-        int flags,
-        SwsFilter *src_filter,
-        SwsFilter *dst_filter,
-        double *param,
-    )
-
     cdef int sws_scale(
         SwsContext *ctx,
         const unsigned char *const *src_slice,