avcodec/libdcadec: require first public release

Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -1883,7 +1883,6 @@ TYPES_LIST="
     CONDITION_VARIABLE_Ptr
     socklen_t
     struct_addrinfo
-    struct_dcadec_exss_info_matrix_encoding
     struct_group_source_req
     struct_ip_mreq_source
     struct_ipv6_mreq
@@ -5348,8 +5347,7 @@ enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
-enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create &&
-                             check_struct libdcadec/dca_context.h "struct dcadec_exss_info" matrix_encoding
+enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&

libavcodec/libdcadec.c

@@ -42,7 +42,7 @@ static int dcadec_decode_frame(AVCodecContext *avctx, void *data,
 {
     DCADecContext *s = avctx->priv_data;
     AVFrame *frame = data;
-    av_unused struct dcadec_exss_info *exss;
+    struct dcadec_exss_info *exss;
     int ret, i, k;
     int **samples, nsamples, channel_mask, sample_rate, bits_per_sample, profile;
     uint32_t mrk;
@@ -78,6 +78,8 @@ static int dcadec_decode_frame(AVCodecContext *avctx, void *data,
                                      &sample_rate, &bits_per_sample, &profile)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "dcadec_context_filter() failed: %d (%s)\n", -ret, dcadec_strerror(ret));
         return AVERROR_EXTERNAL;
+    } else if (ret > 0) {
+        av_log(avctx, AV_LOG_WARNING, "dcadec_context_filter() warning: %d (%s)\n", ret, dcadec_strerror(ret));
     }
 
     avctx->channels       = av_get_channel_layout_nb_channels(channel_mask);
@@ -129,7 +131,6 @@ static int dcadec_decode_frame(AVCodecContext *avctx, void *data,
     } else
         avctx->bit_rate = 0;
 
-#if HAVE_STRUCT_DCADEC_EXSS_INFO_MATRIX_ENCODING
     if (exss = dcadec_context_get_exss_info(s->ctx)) {
         enum AVMatrixEncoding matrix_encoding = AV_MATRIX_ENCODING_NONE;
 
@@ -158,7 +159,6 @@ static int dcadec_decode_frame(AVCodecContext *avctx, void *data,
             (ret = ff_side_data_update_matrix_encoding(frame, matrix_encoding)) < 0)
             return ret;
     }
-#endif
 
     frame->nb_samples = nsamples;
     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)