avformat/aviobuf: add ff_read_line_to_bprint and ff_read_line_to_bprint_overwrite functions

To be able to read lines longer than a static buffer size.

Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 26 insertions, 0 deletions

diff --git a/libavformat/internal.h b/libavformat/internal.h
index 0d08576c29..2ac7e2e1a0 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -299,6 +299,32 @@ void ff_put_v(AVIOContext *bc, uint64_t val);
  */
 int ff_get_line(AVIOContext *s, char *buf, int maxlen);
 
+/**
+ * Read a whole line of text from AVIOContext to an AVBPrint buffer. Stop
+ * reading after reaching a \\r, a \\n, a \\r\\n, a \\0 or EOF.  The line
+ * ending characters are NOT included in the buffer, but they are skipped on
+ * the input.
+ *
+ * @param s the read-only AVIOContext
+ * @param bp the AVBPrint buffer
+ * @return the length of the read line, not including the line endings,
+ *         negative on error.
+ */
+int64_t ff_read_line_to_bprint(AVIOContext *s, AVBPrint *bp);
+
+/**
+ * Read a whole line of text from AVIOContext to an AVBPrint buffer overwriting
+ * its contents. Stop reading after reaching a \\r, a \\n, a \\r\\n, a \\0 or
+ * EOF. The line ending characters are NOT included in the buffer, but they
+ * are skipped on the input.
+ *
+ * @param s the read-only AVIOContext
+ * @param bp the AVBPrint buffer
+ * @return the length of the read line not including the line endings,
+ *         negative on error, or if the buffer becomes truncated.
+ */
+int64_t ff_read_line_to_bprint_overwrite(AVIOContext *s, AVBPrint *bp);
+
 #define SPACE_CHARS " \t\r\n"
 
 /**