diff options
| -rw-r--r-- | src/decoder_buffer.c | 26 | ||||
| -rw-r--r-- | src/decoder_buffer.h | 10 |
2 files changed, 36 insertions, 0 deletions
diff --git a/src/decoder_buffer.c b/src/decoder_buffer.c index 76e9126ef..b6fa90004 100644 --- a/src/decoder_buffer.c +++ b/src/decoder_buffer.c @@ -138,3 +138,29 @@ decoder_buffer_consume(struct decoder_buffer *buffer, size_t nbytes) assert(buffer->consumed <= buffer->length); } + +bool +decoder_buffer_skip(struct decoder_buffer *buffer, size_t nbytes) +{ + size_t length; + const void *data; + bool success; + + /* this could probably be optimized by seeking */ + + while (true) { + data = decoder_buffer_read(buffer, &length); + if (data != NULL) { + if (length > nbytes) + length = nbytes; + decoder_buffer_consume(buffer, length); + nbytes -= length; + if (nbytes == 0) + return true; + } + + success = decoder_buffer_fill(buffer); + if (!success) + return false; + } +} diff --git a/src/decoder_buffer.h b/src/decoder_buffer.h index d951a4055..411e3bd88 100644 --- a/src/decoder_buffer.h +++ b/src/decoder_buffer.h @@ -93,4 +93,14 @@ decoder_buffer_read(const struct decoder_buffer *buffer, size_t *length_r); void decoder_buffer_consume(struct decoder_buffer *buffer, size_t nbytes); +/** + * Skips the specified number of bytes, discarding its data. + * + * @param buffer the decoder_buffer object + * @param nbytes the number of bytes to skip + * @return true on success, false on error + */ +bool +decoder_buffer_skip(struct decoder_buffer *buffer, size_t nbytes); + #endif |