avcodec: add g732_1 parser

1 files changed, 60 insertions, 0 deletions

diff --git a/libavcodec/g723_1_parser.c b/libavcodec/g723_1_parser.c
new file mode 100644
index 0000000000..0305ca329d
--- /dev/null
+++ b/libavcodec/g723_1_parser.c
@@ -0,0 +1,60 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * G723_1 audio parser
+ */
+
+#include "parser.h"
+#include "g723_1.h"
+
+typedef struct G723_1ParseContext {
+    ParseContext pc;
+} G723_1ParseContext;
+
+static int g723_1_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
+                        const uint8_t **poutbuf, int *poutbuf_size,
+                        const uint8_t *buf, int buf_size)
+{
+    G723_1ParseContext *s = s1->priv_data;
+    ParseContext *pc = &s->pc;
+    int next = END_NOT_FOUND;
+
+    if (buf_size > 0)
+        next = frame_size[buf[0] & 3] * FFMAX(1, avctx->channels);
+
+    if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) {
+        *poutbuf      = NULL;
+        *poutbuf_size = 0;
+        return buf_size;
+    }
+
+    s1->duration = 240;
+
+    *poutbuf      = buf;
+    *poutbuf_size = buf_size;
+    return next;
+}
+
+AVCodecParser ff_g723_1_parser = {
+    .codec_ids      = { AV_CODEC_ID_G723_1 },
+    .priv_data_size = sizeof(G723_1ParseContext),
+    .parser_parse   = g723_1_parse,
+    .parser_close   = ff_parse_close,
+};