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af: simplification

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If format negotiation fails, and additional filters are inserted to fix
this, don't try to reinitialize the filter immediately. Instead, correct
the audio format, and let the caller retry.

Add a retry counter to af_reinit() to ensure that misbehaving filters
can't put the format negotiation into an endless loop.
This commit is contained in:
wm4 2013-03-23 16:08:17 +01:00
parent 8a53b3f523
commit e4da671820
1 changed files with 20 additions and 35 deletions
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55
audio/filter/af.c
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@ -353,9 +353,6 @@ static int af_fix_format_conversion(struct af_stream *s,
in.format |= af_bits2fmt(in.bps * 8);
if (AF_OK != (rv = new->control(new, AF_CONTROL_FORMAT_FMT, &in.format)))
return rv;
// Initialize format filter
if (AF_OK != (rv = new->control(new, AF_CONTROL_REINIT, &actual)))
return rv == AF_FALSE ? AF_ERROR : rv;
if (p_af)
*p_af = new;
return AF_OK;
@ -391,8 +388,6 @@ static int af_fix_channels(struct af_stream *s, struct af_instance **p_af,
return AF_ERROR;
if (AF_OK != (rv = new->control(new, AF_CONTROL_CHANNELS, &in.nch)))
return rv;
if (AF_OK != (rv = new->control(new, AF_CONTROL_REINIT, &actual)))
return rv == AF_FALSE ? AF_ERROR : rv;
if (p_af)
*p_af = new;
return AF_OK;
@ -410,8 +405,10 @@ int af_reinit(struct af_stream *s)
remove_auto_inserted_filters(s, true);
struct af_instance *af = s->first;
while (af) {
int rv = 0; // Return value
int retry = 0;
while (af && retry < 5) {
if (retry >= 5)
goto negotiate_error;
// Check if this is the first filter
struct mp_audio in = af->prev ? *(af->prev->data) : s->input;
@ -419,7 +416,7 @@ int af_reinit(struct af_stream *s)
in.audio = NULL;
in.len = 0;
rv = af->control(af, AF_CONTROL_REINIT, &in);
int rv = af->control(af, AF_CONTROL_REINIT, &in);
switch (rv) {
case AF_OK:
af = af->next;
@ -428,21 +425,15 @@ int af_reinit(struct af_stream *s)
// Do auto insertion only if force is not specified
if ((AF_INIT_TYPE_MASK & s->cfg.force) != AF_INIT_FORCE) {
int progress = 0;
if ((rv = af_fix_channels(s, &af, in)) < 0)
return rv;
if (rv == AF_OK)
if (af_fix_channels(s, &af, in) == AF_OK)
progress = 1;
if ((rv = af_fix_format_conversion(s, &af, in)) < 0)
return rv;
if (rv == AF_OK)
if (af_fix_format_conversion(s, &af, in) == AF_OK)
progress = 1;
if (!progress) { // Should _never_ happen
mp_msg(
MSGT_AFILTER, MSGL_ERR,
"[libaf] Unable to correct audio format. "
"This error should never occur, please send a bug report.\n");
return AF_ERROR;
if (progress) {
retry++;
continue;
}
goto negotiate_error;
} else {
mp_msg(
MSGT_AFILTER, MSGL_ERR,
@ -483,6 +474,11 @@ int af_reinit(struct af_stream *s)
af_print_filter_chain(s);
return AF_OK;
negotiate_error:
mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Unable to correct audio format. "
"This error should never occur, please send a bug report.\n");
return AF_ERROR;
}
// Uninit and remove all filters
@ -498,23 +494,12 @@ void af_uninit(struct af_stream *s)
*/
static int fixup_output_format(struct af_stream *s)
{
if (s->output.nch != 0) {
struct af_instance *af = NULL;
if (af_fix_channels(s, &af, s->output) == AF_OK) {
if (AF_OK != af_reinit(s))
return AF_ERROR;
}
}
if (s->output.nch != 0)
af_fix_channels(s, NULL, s->output);
if (s->output.format != AF_FORMAT_UNKNOWN) {
struct af_instance *af = NULL;
if (af_fix_format_conversion(s, &af, s->output) == AF_OK) {
if (AF_OK != af_reinit(s))
return AF_ERROR;
}
}
if (s->output.format != AF_FORMAT_UNKNOWN)
af_fix_format_conversion(s, NULL, s->output);
// Re init again just in case
if (AF_OK != af_reinit(s))
return AF_ERROR;