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authorMax Kellermann <max@duempel.org>2009-02-09 16:36:11 +0100
committerMax Kellermann <max@duempel.org>2009-02-09 16:38:25 +0100
commit1ac328b553df550c25bd0000e190d4cdd7c54a08 (patch)
treef18f9adf6240005f4536888311132340256751aa /src/output
parent7fc25ad567a0b8b4f7c05832adc17e9fdcc2cefb (diff)
downloadmpd-1ac328b553df550c25bd0000e190d4cdd7c54a08.tar.gz
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shout: clear buffer before calling the encoder
Always assume the buffer is empty before calling the encoder. Always flush the buffer immediately after there has been added something. This reduces the risk of buffer overruns, because there will never be a "rest" in the current buffer.
Diffstat (limited to 'src/output')
-rw-r--r--src/output/shout_mp3.c6
-rw-r--r--src/output/shout_ogg.c17
-rw-r--r--src/output/shout_plugin.c9
3 files changed, 14 insertions, 18 deletions
diff --git a/src/output/shout_mp3.c b/src/output/shout_mp3.c
index 86d39fc66..6086c843e 100644
--- a/src/output/shout_mp3.c
+++ b/src/output/shout_mp3.c
@@ -43,8 +43,8 @@ static int shout_mp3_encoder_clear_encoder(struct shout_data *sd)
struct shout_buffer *buf = &sd->buf;
int ret;
- if ((ret = lame_encode_flush(ld->gfp, buf->data + buf->len,
- buf->len)) < 0)
+ ret = lame_encode_flush(ld->gfp, buf->data, sizeof(buf->data));
+ if (ret < 0)
g_warning("error flushing lame buffers\n");
lame_close(ld->gfp);
@@ -164,7 +164,7 @@ static int shout_mp3_encoder_encode(struct shout_data *sd,
bytes_out = lame_encode_buffer_float(ld->gfp, left, right,
samples, buf->data,
- sizeof(buf->data) - buf->len);
+ sizeof(buf->data));
g_free(left);
if (right != left)
diff --git a/src/output/shout_ogg.c b/src/output/shout_ogg.c
index d5766d0a3..ebf84c0bf 100644
--- a/src/output/shout_ogg.c
+++ b/src/output/shout_ogg.c
@@ -75,23 +75,14 @@ static void copy_tag_to_vorbis_comment(struct shout_data *sd)
static int copy_ogg_buffer_to_shout_buffer(ogg_page *og,
struct shout_buffer *buf)
{
- if (sizeof(buf->data) - buf->len >= (size_t)og->header_len) {
- memcpy(buf->data + buf->len,
- og->header, og->header_len);
- buf->len += og->header_len;
- } else {
+ if ((size_t)og->header_len + (size_t)og->body_len > sizeof(buf->data)) {
g_warning("%s: not enough buffer space!\n", __func__);
return -1;
}
- if (sizeof(buf->data) - buf->len >= (size_t)og->body_len) {
- memcpy(buf->data + buf->len,
- og->body, og->body_len);
- buf->len += og->body_len;
- } else {
- g_warning("%s: not enough buffer space!\n", __func__);
- return -1;
- }
+ memcpy(buf->data, og->header, og->header_len);
+ memcpy(buf->data + og->header_len, og->body, og->body_len);
+ buf->len = og->header_len + og->body_len;
return 0;
}
diff --git a/src/output/shout_plugin.c b/src/output/shout_plugin.c
index fcb178459..4ad40acab 100644
--- a/src/output/shout_plugin.c
+++ b/src/output/shout_plugin.c
@@ -58,7 +58,6 @@ static struct shout_data *new_shout_data(void)
ret->bitrate = -1;
ret->quality = -2.0;
ret->timeout = DEFAULT_CONN_TIMEOUT;
- ret->buf.len = 0;
return ret;
}
@@ -287,13 +286,14 @@ static int write_page(struct shout_data *sd)
err = shout_send(sd->shout_conn, sd->buf.data, sd->buf.len);
if (handle_shout_error(sd, err) < 0)
return -1;
- sd->buf.len = 0;
return 0;
}
static void close_shout_conn(struct shout_data * sd)
{
+ sd->buf.len = 0;
+
if (sd->encoder->clear_encoder_func(sd))
write_page(sd);
@@ -359,6 +359,8 @@ static int open_shout_conn(void *data)
if (status != 0)
return status;
+ sd->buf.len = 0;
+
if (sd->encoder->init_encoder_func(sd) < 0) {
shout_close(sd->shout_conn);
return -1;
@@ -386,6 +388,8 @@ my_shout_play(void *data, const char *chunk, size_t size)
{
struct shout_data *sd = (struct shout_data *)data;
+ sd->buf.len = 0;
+
if (sd->encoder->encode_func(sd, chunk, size))
return false;
@@ -410,6 +414,7 @@ static void my_shout_set_tag(void *data,
char song[1024];
bool ret;
+ sd->buf.len = 0;
sd->tag = tag;
ret = sd->encoder->send_metadata_func(sd, song, sizeof(song));
if (ret) {