Remove unused C defs

Author: WyattBlue

include/libavcodec/avcodec.pxd

@@ -327,7 +327,7 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         AVChannelLayout ch_layout
         int frame_size
 
-        #: .. todo:: ``get_buffer`` is deprecated for get_buffer2 in newer versions of FFmpeg.
+        # TODO: ``get_buffer`` is deprecated for get_buffer2 in newer versions of FFmpeg.
         int get_buffer(AVCodecContext *ctx, AVFrame *frame)
         void release_buffer(AVCodecContext *ctx, AVFrame *frame)
 
@@ -446,56 +446,48 @@ cdef extern from "libavcodec/avcodec.h" nogil:
         uint8_t *data[4]
         int linesize[4]
         uint8_t **extended_data
-
-        int format  # Should be AVPixelFormat or AVSampleFormat
-        AVPictureType pict_type
-
         int width
         int height
-
-        int nb_side_data
-        AVFrameSideData **side_data
-
         int nb_samples
-        int sample_rate
-
-        AVChannelLayout ch_layout
+        int format  # -1 if unknown, AVPixelFormat or AVSampleFormat
+        AVPictureType pict_type
 
         int64_t pts
         int64_t pkt_dts
-
-        int pkt_size
-
-        uint8_t **base
         void *opaque
-        AVBufferRef *opaque_ref
-        AVDictionary *metadata
+        int sample_rate
+        int nb_side_data
+        AVFrameSideData **side_data
         int flags
-        int decode_error_flags
         AVColorRange color_range
         AVColorPrimaries color_primaries
         AVColorTransferCharacteristic color_trc
         AVColorSpace colorspace
 
+        AVDictionary *metadata
+        int decode_error_flags
+
+        AVBufferRef *opaque_ref
+        AVChannelLayout ch_layout
         int64_t duration
 
     cdef AVFrame* avcodec_alloc_frame()
 
     cdef struct AVPacket:
+        void *buf  # ptr[AVBufferRef]
         int64_t pts
         int64_t dts
         uint8_t *data
-        AVRational time_base
         int size
         int stream_index
         int flags
         AVPacketSideData *side_data
         int side_data_elems
-        int duration
+        int64_t duration
         int64_t pos
         void *opaque
         AVBufferRef *opaque_ref
-
+        AVRational time_base
 
     cdef int avcodec_fill_audio_frame(
         AVFrame *frame,
@@ -556,15 +548,8 @@ cdef extern from "libavcodec/avcodec.h" nogil:
     )
 
     cdef void avsubtitle_free(AVSubtitle*)
-
-    cdef void avcodec_get_frame_defaults(AVFrame* frame)
-
     cdef void avcodec_flush_buffers(AVCodecContext *ctx)
 
-    # TODO: avcodec_default_get_buffer is deprecated for avcodec_default_get_buffer2 in newer versions of FFmpeg
-    cdef int avcodec_default_get_buffer(AVCodecContext *ctx, AVFrame *frame)
-    cdef void avcodec_default_release_buffer(AVCodecContext *ctx, AVFrame *frame)
-
     # === New-style Transcoding
     cdef int avcodec_send_packet(AVCodecContext *avctx, AVPacket *packet)
     cdef int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
@@ -576,8 +561,6 @@ cdef extern from "libavcodec/avcodec.h" nogil:
     cdef struct AVCodecParser:
         int codec_ids[5]
 
-    cdef AVCodecParser* av_parser_next(AVCodecParser *c)
-
     cdef struct AVCodecParserContext:
         pass