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ffplay: simplify audio_open, rename parameters to more explanatory names

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2012-04-14 18:27:58 +02:00
parent 7342037973
commit 7821264c26
1 changed files with 12 additions and 12 deletions
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24
ffplay.c
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@ -2242,18 +2242,18 @@ static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
}
static int audio_open(void *opaque, int64_t channel_layout, int channels, int sample_rate, struct AudioParams *audio)
static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
{
SDL_AudioSpec wanted_spec, spec;
const char *env;
int64_t wanted_channel_layout = 0;
int wanted_nb_channels;
env = SDL_getenv("SDL_AUDIO_CHANNELS");
if (env)
wanted_channel_layout = av_get_default_channel_layout(SDL_atoi(env));
if (!wanted_channel_layout) {
wanted_channel_layout = (channel_layout && channels == av_get_channel_layout_nb_channels(channel_layout)) ? channel_layout : av_get_default_channel_layout(channels);
if (env) {
wanted_nb_channels = SDL_atoi(env);
wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
}
if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
/* SDL only supports 1, 2, 4 or 6 channels at the moment, so we have to make sure not to request anything else. */
@ -2263,7 +2263,7 @@ static int audio_open(void *opaque, int64_t channel_layout, int channels, int sa
}
}
wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
wanted_spec.freq = sample_rate;
wanted_spec.freq = wanted_sample_rate;
if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
fprintf(stderr, "Invalid sample rate or channel count!\n");
return -1;
@ -2289,10 +2289,10 @@ static int audio_open(void *opaque, int64_t channel_layout, int channels, int sa
}
}
audio->fmt = AV_SAMPLE_FMT_S16;
audio->freq = spec.freq;
audio->channel_layout = wanted_channel_layout;
audio->channels = spec.channels;
audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
audio_hw_params->freq = spec.freq;
audio_hw_params->channel_layout = wanted_channel_layout;
audio_hw_params->channels = spec.channels;
return spec.size;
}