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fix a bad memory access pulsecore/client.c

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2527 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-06-13 21:56:19 +00:00
parent 7bae1baa3e
commit b27cc1d426
14 changed files with 220 additions and 33 deletions
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69
src/pulsecore/sink.c
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@ -498,24 +498,25 @@ static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, uns
return n;
}
static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, size_t length) {
static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) {
pa_sink_input *i;
void *state = NULL;
unsigned p = 0;
unsigned n_unreffed = 0;
pa_sink_assert_ref(s);
pa_assert(result);
pa_assert(result->memblock);
pa_assert(result->length > 0);
/* We optimize for the case where the order of the inputs has not changed */
while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) {
unsigned j;
pa_mix_info* m;
pa_mix_info* m = NULL;
pa_sink_input_assert_ref(i);
m = NULL;
/* Let's try to find the matching entry info the pa_mix_info array */
for (j = 0; j < n; j ++) {
@ -530,14 +531,47 @@ static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, size_t length
}
/* Drop read data */
pa_sink_input_drop(i, length);
pa_sink_input_drop(i, result->length);
if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source))) {
if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) {
void *ostate = NULL;
pa_source_output *o;
pa_memchunk c;
if (m && m->chunk.memblock) {
c = m->chunk;
pa_memblock_ref(c.memblock);
pa_assert(result->length <= c.length);
c.length = result->length;
pa_memchunk_make_writable(&c, 0);
pa_volume_memchunk(&c, &s->sample_spec, &m->volume);
} else {
c = s->silence;
pa_memblock_ref(c.memblock);
pa_assert(result->length <= c.length);
c.length = result->length;
}
while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) {
pa_source_output_assert_ref(o);
pa_assert(o->direct_on_input == i);
pa_source_post_direct(s->monitor_source, o, &c);
}
pa_memblock_unref(c.memblock);
}
}
if (m) {
pa_sink_input_unref(m->userdata);
m->userdata = NULL;
if (m->chunk.memblock)
pa_memblock_unref(m->chunk.memblock);
pa_memchunk_reset(&m->chunk);
pa_memchunk_reset(&m->chunk);
pa_sink_input_unref(m->userdata);
m->userdata = NULL;
n_unreffed += 1;
}
@ -554,6 +588,9 @@ static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, size_t length
pa_memblock_unref(info->chunk.memblock);
}
}
if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source)))
pa_source_post(s->monitor_source, result);
}
void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
@ -624,10 +661,7 @@ void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
}
if (s->thread_info.state == PA_SINK_RUNNING)
inputs_drop(s, info, n, result->length);
if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source)))
pa_source_post(s->monitor_source, result);
inputs_drop(s, info, n, result);
pa_sink_unref(s);
}
@ -653,6 +687,8 @@ void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
if (length > block_size_max)
length = pa_frame_align(block_size_max, &s->sample_spec);
pa_assert(length > 0);
n = s->thread_info.state == PA_SINK_RUNNING ? fill_mix_info(s, &length, info, MAX_MIX_CHANNELS) : 0;
if (n == 0) {
@ -676,8 +712,8 @@ void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
vchunk = info[0].chunk;
pa_memblock_ref(vchunk.memblock);
if (vchunk.length > target->length)
vchunk.length = target->length;
if (vchunk.length > length)
vchunk.length = length;
if (!pa_cvolume_is_norm(&volume)) {
pa_memchunk_make_writable(&vchunk, 0);
@ -703,10 +739,7 @@ void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
}
if (s->thread_info.state == PA_SINK_RUNNING)
inputs_drop(s, info, n, target->length);
if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source)))
pa_source_post(s->monitor_source, target);
inputs_drop(s, info, n, target);
pa_sink_unref(s);
}