lavc/videotoolboxenc: simplify frame creation logic between OS X and iOS.

Signed-off-by: Rick Kern <kernrj@gmail.com>

libavcodec/videotoolboxenc.c

@@ -2011,19 +2011,6 @@ static int get_cv_pixel_info(
     return 0;
 }
 
-#if !TARGET_OS_IPHONE
-//Not used on iOS - frame is always copied.
-static void free_avframe(
-    void       *release_ctx,
-    const void *data,
-    size_t      size,
-    size_t      plane_count,
-    const void *plane_addresses[])
-{
-    AVFrame *frame = release_ctx;
-    av_frame_free(&frame);
-}
-#else
 //Not used on OSX - frame is never copied.
 static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
                                         const AVFrame    *frame,
@@ -2116,7 +2103,6 @@ static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
 
     return 0;
 }
-#endif //!TARGET_OS_IPHONE
 
 static int create_cv_pixel_buffer(AVCodecContext   *avctx,
                                   const AVFrame    *frame,
@@ -2129,18 +2115,8 @@ static int create_cv_pixel_buffer(AVCodecContext   *avctx,
     size_t strides[AV_NUM_DATA_POINTERS];
     int status;
     size_t contiguous_buf_size;
-#if TARGET_OS_IPHONE
     CVPixelBufferPoolRef pix_buf_pool;
     VTEncContext* vtctx = avctx->priv_data;
-#else
-    CFMutableDictionaryRef pix_buf_attachments = CFDictionaryCreateMutable(
-                                                   kCFAllocatorDefault,
-                                                   10,
-                                                   &kCFCopyStringDictionaryKeyCallBacks,
-                                                   &kCFTypeDictionaryValueCallBacks);
-
-    if (!pix_buf_attachments) return AVERROR(ENOMEM);
-#endif
 
     if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
         av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
@@ -2180,7 +2156,6 @@ static int create_cv_pixel_buffer(AVCodecContext   *avctx,
         return AVERROR_EXTERNAL;
     }
 
-#if TARGET_OS_IPHONE
     pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
     if (!pix_buf_pool) {
         /* On iOS, the VT session is invalidated when the APP switches from
@@ -2222,43 +2197,6 @@ static int create_cv_pixel_buffer(AVCodecContext   *avctx,
         *cv_img = NULL;
         return status;
     }
-#else
-    AVFrame *enc_frame = av_frame_alloc();
-    if (!enc_frame) return AVERROR(ENOMEM);
-
-    status = av_frame_ref(enc_frame, frame);
-    if (status) {
-        av_frame_free(&enc_frame);
-        return status;
-    }
-
-    status = CVPixelBufferCreateWithPlanarBytes(
-        kCFAllocatorDefault,
-        enc_frame->width,
-        enc_frame->height,
-        color,
-        NULL,
-        contiguous_buf_size,
-        plane_count,
-        (void **)enc_frame->data,
-        widths,
-        heights,
-        strides,
-        free_avframe,
-        enc_frame,
-        NULL,
-        cv_img
-    );
-
-    add_color_attr(avctx, pix_buf_attachments);
-    CVBufferSetAttachments(*cv_img, pix_buf_attachments, kCVAttachmentMode_ShouldPropagate);
-    CFRelease(pix_buf_attachments);
-
-    if (status) {
-        av_log(avctx, AV_LOG_ERROR, "Error: Could not create CVPixelBuffer: %d\n", status);
-        return AVERROR_EXTERNAL;
-    }
-#endif
 
     return 0;
 }