+ .capabilities = AV_CODEC_CAP_DR1,
+};
+#endif /* CONFIG_LIBOPENCORE_AMRNB_DECODER */
+
+#if CONFIG_LIBOPENCORE_AMRNB_ENCODER
+/* Common code for fixed and float version*/
+typedef struct AMR_bitrates {
+ int rate;
+ enum Mode mode;
+} AMR_bitrates;
+
+/* Match desired bitrate */
+static int get_bitrate_mode(int bitrate, void *log_ctx)
+{
+ /* make the correspondance between bitrate and mode */
+ static const AMR_bitrates rates[] = {
+ { 4750, MR475 }, { 5150, MR515 }, { 5900, MR59 }, { 6700, MR67 },
+ { 7400, MR74 }, { 7950, MR795 }, { 10200, MR102 }, { 12200, MR122 }
+ };
+ int i, best = -1, min_diff = 0;
+ char log_buf[200];
+
+ for (i = 0; i < 8; i++) {
+ if (rates[i].rate == bitrate)
+ return rates[i].mode;
+ if (best < 0 || abs(rates[i].rate - bitrate) < min_diff) {
+ best = i;
+ min_diff = abs(rates[i].rate - bitrate);
+ }
+ }
+ /* no bitrate matching exactly, log a warning */
+ snprintf(log_buf, sizeof(log_buf), "bitrate not supported: use one of ");
+ for (i = 0; i < 8; i++)
+ av_strlcatf(log_buf, sizeof(log_buf), "%.2fk, ", rates[i].rate / 1000.f);
+ av_strlcatf(log_buf, sizeof(log_buf), "using %.2fk", rates[best].rate / 1000.f);
+ av_log(log_ctx, AV_LOG_WARNING, "%s\n", log_buf);
+
+ return best;
+}
+
+static const AVOption options[] = {
+ { "dtx", "Allow DTX (generate comfort noise)", offsetof(AMRContext, enc_dtx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
+ { NULL }
+};
+
+static const AVClass class = {
+ "libopencore_amrnb", av_default_item_name, options, LIBAVUTIL_VERSION_INT