[FFmpeg-devel] [PATCH] ffplay: factorize expression in audio_decode_frame()

Stefano Sabatini stefasab at gmail.com
Sat Jun 30 00:08:06 CEST 2012


Possibly improve readability.
---
 ffplay.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ffplay.c b/ffplay.c
index 2739f47..2d8395c 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -1991,6 +1991,7 @@ static int audio_decode_frame(VideoState *is, double *pts_ptr)
             if (is->swr_ctx) {
                 const uint8_t *in[] = { is->frame->data[0] };
                 uint8_t *out[] = {is->audio_buf2};
+                int out_count = sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt);
                 if (wanted_nb_samples != is->frame->nb_samples) {
                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
@@ -1998,13 +1999,13 @@ static int audio_decode_frame(VideoState *is, double *pts_ptr)
                         break;
                     }
                 }
-                len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
+                len2 = swr_convert(is->swr_ctx, out, out_count,
                                                 in, is->frame->nb_samples);
                 if (len2 < 0) {
                     fprintf(stderr, "swr_convert() failed\n");
                     break;
                 }
-                if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
+                if (len2 == out_count) {
                     fprintf(stderr, "warning: audio buffer is probably too small\n");
                     swr_init(is->swr_ctx);
                 }
-- 
1.7.5.4



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