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authorwm4 <wm4@nowhere>2013-05-13 00:38:35 +0200
committerwm4 <wm4@nowhere>2013-05-13 00:39:07 +0200
commit279f4b59dc08950a90379ef5905736167c79a438 (patch)
treedd00ee2e8fe1ae2476e3350574ed364c593b4da0 /audio/filter/af_lavrresample.c
parent35c8f7b6082871d690c4355d5173dde939bf60ec (diff)
downloadmpv-279f4b59dc08950a90379ef5905736167c79a438.tar.bz2
mpv-279f4b59dc08950a90379ef5905736167c79a438.tar.xz
audio: fix compilation with older libavresample versions
The libavresample version of the current Libav stable release lacks the avresample_set_channel_mapping() function. (FFmpeg's libswresample seems to be fine, because they added swr_set_channel_mapping() first.) Add a cheap/slow workaround to do channel reordering on our own. We don't use the recently removed MPlayer code (see commit 586b75a), because that is not generic enough. The functionality should be the same as with full-featured libavresample, and any differences are bugs. It's probably slower, though.
Diffstat (limited to 'audio/filter/af_lavrresample.c')
-rw-r--r--audio/filter/af_lavrresample.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/audio/filter/af_lavrresample.c b/audio/filter/af_lavrresample.c
index 4372100ea0..162f196477 100644
--- a/audio/filter/af_lavrresample.c
+++ b/audio/filter/af_lavrresample.c
@@ -34,6 +34,7 @@
#if defined(CONFIG_LIBAVRESAMPLE)
#include <libavresample/avresample.h>
+#define USE_SET_CHANNEL_MAPPING HAVE_AVRESAMPLE_SET_CHANNEL_MAPPING
#elif defined(CONFIG_LIBSWRESAMPLE)
#include <libswresample/swresample.h>
#define AVAudioResampleContext SwrContext
@@ -44,6 +45,7 @@
#define avresample_convert(ctx, out, out_planesize, out_samples, in, in_planesize, in_samples) \
swr_convert(ctx, out, out_samples, (const uint8_t**)(in), in_samples)
#define avresample_set_channel_mapping swr_set_channel_mapping
+#define USE_SET_CHANNEL_MAPPING 1
#else
#error "config.h broken"
#endif
@@ -52,6 +54,7 @@
#include "core/subopt-helper.h"
#include "audio/filter/af.h"
#include "audio/fmt-conversion.h"
+#include "audio/reorder_ch.h"
struct af_resample_opts {
int filter_size;
@@ -217,11 +220,13 @@ static int control(struct af_instance *af, int cmd, void *arg)
av_opt_set_int(s->avrctx_out, "in_sample_rate", s->ctx.out_rate, 0);
av_opt_set_int(s->avrctx_out, "out_sample_rate", s->ctx.out_rate, 0);
+#if USE_SET_CHANNEL_MAPPING
// API has weird requirements, quoting avresample.h:
// * This function can only be called when the allocated context is not open.
// * Also, the input channel layout must have already been set.
avresample_set_channel_mapping(s->avrctx, s->reorder_in);
avresample_set_channel_mapping(s->avrctx_out, s->reorder_out);
+#endif
if (avresample_open(s->avrctx) < 0 ||
avresample_open(s->avrctx_out) < 0)
@@ -322,12 +327,17 @@ static struct mp_audio *play(struct af_instance *af, struct mp_audio *data)
s->ctx.out_rate, s->ctx.in_rate,
AV_ROUND_UP);
+#if USE_SET_CHANNEL_MAPPING
+ reorder_channels(data->audio, s->reorder_in, data->bps, data->nch, in_samples);
+#endif
+
out_samples = avresample_convert(s->avrctx,
(uint8_t **) &out->audio, out_size, out_samples,
(uint8_t **) &in->audio, in_size, in_samples);
*data = *out;
+#if USE_SET_CHANNEL_MAPPING
if (needs_reorder(s->reorder_out, out->nch)) {
if (talloc_get_size(s->reorder_buffer) < out_size)
s->reorder_buffer = talloc_realloc_size(s, s->reorder_buffer, out_size);
@@ -336,6 +346,9 @@ static struct mp_audio *play(struct af_instance *af, struct mp_audio *data)
(uint8_t **) &data->audio, out_size, out_samples,
(uint8_t **) &out->audio, out_size, out_samples);
}
+#else
+ reorder_channels(data->audio, s->reorder_out, out->bps, out->nch, out_samples);
+#endif
data->len = out->bps * out_samples * out->nch;
return data;