On Sun, 19 Feb 2012, Justin Ruggles wrote:

---
libavcodec/libmp3lame.c |    7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/libavcodec/libmp3lame.c b/libavcodec/libmp3lame.c
index 3ac033f..b8ccb26 100644
--- a/libavcodec/libmp3lame.c
+++ b/libavcodec/libmp3lame.c
@@ -35,7 +35,6 @@
typedef struct Mp3AudioContext {
    AVClass *class;
    lame_global_flags *gfp;
-    int stereo;
    uint8_t buffer[BUFFER_SIZE];
    int buffer_index;
    int reservoir;
@@ -48,8 +47,6 @@ static av_cold int MP3lame_encode_init(AVCodecContext *avctx)
    if (avctx->channels > 2)
        return -1;

-    s->stereo = avctx->channels > 1 ? 1 : 0;
-
    if ((s->gfp = lame_init()) == NULL)
        goto err;
    lame_set_in_samplerate(s->gfp, avctx->sample_rate);
@@ -60,7 +57,7 @@ static av_cold int MP3lame_encode_init(AVCodecContext *avctx)
    } else {
        lame_set_quality(s->gfp, avctx->compression_level);
    }
-    lame_set_mode(s->gfp, s->stereo ? JOINT_STEREO : MONO);
+    lame_set_mode(s->gfp, avctx->channels > 1 ? JOINT_STEREO : MONO);
    lame_set_brate(s->gfp, avctx->bit_rate / 1000);
    if (avctx->flags & CODEC_FLAG_QSCALE) {
        lame_set_brate(s->gfp, 0);
@@ -153,7 +150,7 @@ static int MP3lame_encode_frame(AVCodecContext *avctx, 
unsigned char *frame,
    /* lame 3.91 dies on '1-channel interleaved' data */

    if (data) {
-        if (s->stereo) {
+        if (avctx->channels > 1) {
            lame_result = lame_encode_buffer_interleaved(s->gfp, data,
                                                         avctx->frame_size,
                                                         s->buffer + 
s->buffer_index,
--
1.7.1

Looks good to me

// Martin
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