From a07934d51b40b0f48be531a359d39c091c414643 Mon Sep 17 00:00:00 2001 From: Marton Balint Date: Sun, 3 Apr 2016 21:23:41 +0200 Subject: ffplay: fix silence insertion on error or pause Insertion of silence was a bit broken since df34b700981de606ca4847e1ed0bfdf9ac3e9104 because the info whether or not the source buffer supposed to be silence must be kept between callbacks. Failing to do so causes rogue samples from the last buffer to be presented, I guess even a crash can occur under some circumstances. This patch uses a NULL audio_buf to keep the silence state across audio callbacks. Reviewed-by: Lukasz Marek Signed-off-by: Marton Balint --- ffplay.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'ffplay.c') diff --git a/ffplay.c b/ffplay.c index aab03d1..123f4bc 100644 --- a/ffplay.c +++ b/ffplay.c @@ -2531,7 +2531,7 @@ static int audio_decode_frame(VideoState *is) static void sdl_audio_callback(void *opaque, Uint8 *stream, int len) { VideoState *is = opaque; - int audio_size, len1, silence = 0; + int audio_size, len1; audio_callback_time = av_gettime_relative(); @@ -2540,7 +2540,7 @@ static void sdl_audio_callback(void *opaque, Uint8 *stream, int len) audio_size = audio_decode_frame(is); if (audio_size < 0) { /* if error, just output silence */ - silence = 1; + is->audio_buf = NULL; is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size; } else { if (is->show_mode != SHOW_MODE_VIDEO) @@ -2552,11 +2552,11 @@ static void sdl_audio_callback(void *opaque, Uint8 *stream, int len) len1 = is->audio_buf_size - is->audio_buf_index; if (len1 > len) len1 = len; - if (!is->muted && !silence && is->audio_volume == SDL_MIX_MAXVOLUME) + if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME) memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1); else { memset(stream, 0, len1); - if (!is->muted && !silence) + if (!is->muted && is->audio_buf) SDL_MixAudio(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1, is->audio_volume); } len -= len1; -- cgit v1.1