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decoder/pcm: support reverse byte order

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This commit is contained in:
Max Kellermann
2011-10-10 09:40:46 +02:00
parent 26225307d3
commit 4c9782ee28
1 changed files with 21 additions and 3 deletions
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24
src/decoder/pcm_decoder_plugin.c
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@@ -31,21 +31,35 @@
static void static void
pcm_stream_decode(struct decoder *decoder, struct input_stream *is) pcm_stream_decode(struct decoder *decoder, struct input_stream *is)
{ {
static const struct audio_format audio_format = { static const struct audio_format host_audio_format = {
.sample_rate = 44100, .sample_rate = 44100,
.format = SAMPLE_FORMAT_S16, .format = SAMPLE_FORMAT_S16,
.channels = 2, .channels = 2,
}; };
static const struct audio_format reverse_audio_format = {
.sample_rate = 44100,
.format = SAMPLE_FORMAT_S16,
.channels = 2,
.reverse_endian = true,
};
const struct audio_format *audio_format =
(is->mime == NULL ||
strcmp(is->mime, "audio/x-mpd-cdda-pcm-reverse") != 0)
? &host_audio_format
: &reverse_audio_format;
GError *error = NULL; GError *error = NULL;
enum decoder_command cmd; enum decoder_command cmd;
double time_to_size = audio_format_time_to_size(&audio_format); double time_to_size = audio_format_time_to_size(audio_format);
float total_time = -1; float total_time = -1;
if (is->size >= 0) if (is->size >= 0)
total_time = is->size / time_to_size; total_time = is->size / time_to_size;
decoder_initialized(decoder, &audio_format, is->seekable, total_time); decoder_initialized(decoder, audio_format, is->seekable, total_time);
do { do {
char buffer[4096]; char buffer[4096];
@@ -80,6 +94,10 @@ pcm_stream_decode(struct decoder *decoder, struct input_stream *is)
static const char *const pcm_mime_types[] = { static const char *const pcm_mime_types[] = {
/* for streams obtained by the cdio_paranoia input plugin */ /* for streams obtained by the cdio_paranoia input plugin */
"audio/x-mpd-cdda-pcm", "audio/x-mpd-cdda-pcm",
/* same as above, but with reverse byte order */
"audio/x-mpd-cdda-pcm-reverse",
NULL NULL
}; };