+hb_title_t * hb_get_title_by_index( hb_handle_t *, int );
+
+void hb_avcodec_init()
+{
+ hb_avcodec_lock = hb_lock_init();
+ av_register_all();
+}
+
+int hb_avcodec_open(AVCodecContext *avctx, AVCodec *codec)
+{
+ int ret;
+ hb_lock( hb_avcodec_lock );
+ ret = avcodec_open(avctx, codec);
+ hb_unlock( hb_avcodec_lock );
+ return ret;
+}
+
+int hb_av_find_stream_info(AVFormatContext *ic)
+{
+ int ret;
+ hb_lock( hb_avcodec_lock );
+ ret = av_find_stream_info( ic );
+ hb_unlock( hb_avcodec_lock );
+ return ret;
+}
+
+struct SwsContext*
+hb_sws_get_context(int srcW, int srcH, enum PixelFormat srcFormat,
+ int dstW, int dstH, enum PixelFormat dstFormat,
+ int flags)
+{
+ struct SwsContext * ctx;
+
+#if 0
+ // sws_getContext is being depricated. But it appears that
+ // the new method isn't quite wrung out yet. So when it is
+ // this code should be fixed up and enabled.
+ ctx = sws_alloc_context();
+ if ( ctx )
+ {
+ av_set_int(ctx, "srcw", srcW);
+ av_set_int(ctx, "srch", srcH);
+ av_set_int(ctx, "src_format", srcFormat);
+ av_set_int(ctx, "dstw", dstW);
+ av_set_int(ctx, "dsth", dstH);
+ av_set_int(ctx, "dst_format", dstFormat);
+ av_set_int(ctx, "sws_flags", flags);
+
+ if (sws_init_context(ctx, NULL, NULL) < 0) {
+ fprintf(stderr, "Cannot initialize resampling context\n");
+ sws_freeContext(ctx);
+ ctx = NULL;
+ }
+ }
+#else
+ ctx = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
+ flags, NULL, NULL, NULL);
+#endif
+ return ctx;
+}
+
+int hb_avcodec_close(AVCodecContext *avctx)
+{
+ int ret;
+ hb_lock( hb_avcodec_lock );
+ ret = avcodec_close(avctx);
+ hb_unlock( hb_avcodec_lock );
+ return ret;
+}
+
+int hb_ff_layout_xlat(int64_t ff_channel_layout, int channels)
+{
+ int hb_layout;
+
+ switch (ff_channel_layout)
+ {
+ case CH_LAYOUT_MONO:
+ hb_layout = HB_INPUT_CH_LAYOUT_MONO;
+ break;
+ case CH_LAYOUT_STEREO:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ case CH_LAYOUT_SURROUND:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F;
+ break;
+ case CH_LAYOUT_4POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F1R;
+ break;
+ case CH_LAYOUT_2_2:
+ hb_layout = HB_INPUT_CH_LAYOUT_2F2R;
+ break;
+ case CH_LAYOUT_QUAD:
+ hb_layout = HB_INPUT_CH_LAYOUT_2F2R;
+ break;
+ case CH_LAYOUT_5POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case CH_LAYOUT_5POINT1:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_5POINT0_BACK:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case CH_LAYOUT_5POINT1_BACK:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_7POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R;
+ break;
+ case CH_LAYOUT_7POINT1:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_STEREO_DOWNMIX:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ default:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ }
+ // Now make sure the chosen layout agrees with the number of channels
+ // ffmpeg tells us there are. It seems ffmpeg is sometimes confused
+ // about this. So we will make a best guess based on the number
+ // of channels.
+ int chans = HB_INPUT_CH_LAYOUT_GET_DISCRETE_COUNT( hb_layout );
+ if ( chans == channels )
+ {
+ return hb_layout;
+ }
+ hb_log( "Channels reported by ffmpeg (%d) != computed layout channels (%d).", channels, chans );
+ switch (channels)
+ {
+ case 1:
+ hb_layout = HB_INPUT_CH_LAYOUT_MONO;
+ break;
+ case 2:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ case 3:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F;
+ break;
+ case 4:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F1R;
+ break;
+ case 5:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case 6:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case 7:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R;
+ break;
+ case 8:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ default:
+ hb_log("Unsupported number of audio channels (%d).\n", channels);
+ hb_layout = 0;
+ break;
+ }
+ return hb_layout;
+}