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Fix bitrate for layered/segemented layouts

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bnnm 2018-09-09 19:22:32 +02:00
parent fd7d6f513d
commit a273d9d9a2
1 changed files with 65 additions and 29 deletions
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94
src/vgmstream.c
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@ -2533,16 +2533,17 @@ static int get_vgmstream_average_bitrate_from_streamfile(STREAMFILE * streamfile
/* Return the average bitrate in bps of all unique files contained within this stream. */
int get_vgmstream_average_bitrate(VGMSTREAM * vgmstream) {
char path_current[PATH_LIMIT];
char path_compare[PATH_LIMIT];
STREAMFILE *streamfiles[64];
const size_t streamfiles_max = 64; /* arbitrary max, */
size_t streamfiles_size = 0;
size_t streams_size = 0;
unsigned int ch, sub;
unsigned int i, j;
int bitrate = 0;
int sample_rate = vgmstream->sample_rate;
int length_samples = vgmstream->num_samples;
int channels = vgmstream->channels;
if (!sample_rate || !length_samples || !channels)
if (!sample_rate || !length_samples)
return 0;
/* subsongs need to report this to properly calculate */
@ -2550,34 +2551,69 @@ int get_vgmstream_average_bitrate(VGMSTREAM * vgmstream) {
return get_vgmstream_average_bitrate_from_size(vgmstream->stream_size, sample_rate, length_samples);
}
/* segmented layout is handled differently as it has multiple sub-VGMSTREAMs (may include special codecs) */
//todo not correct with multifile segments (ex. .ACM Ogg)
/* make a list of used streamfiles (repeats will be filtered below) */
if (vgmstream->layout_type==layout_segmented) {
segmented_layout_data *data = (segmented_layout_data *) vgmstream->layout_data;
return get_vgmstream_average_bitrate(data->segments[0]);
}
if (vgmstream->layout_type==layout_layered) {
layered_layout_data *data = (layered_layout_data *) vgmstream->layout_data;
return get_vgmstream_average_bitrate(data->layers[0]);
}
/* compares files by absolute paths, so bitrate doesn't multiply when the same STREAMFILE is reopened per channel */
for (i = 0; i < channels; i++) {
STREAMFILE * currentFile = get_vgmstream_average_bitrate_channel_streamfile(vgmstream, i);
if (!currentFile) continue;
get_streamfile_name(currentFile, path_current, sizeof(path_current));
for (j = 0; j < i; j++) {
STREAMFILE * compareFile = get_vgmstream_average_bitrate_channel_streamfile(vgmstream, j);
if (!compareFile) continue;
get_streamfile_name(compareFile, path_compare, sizeof(path_compare));
if (strcmp(path_current, path_compare) != 0)
break;
for (sub = 0; sub < data->segment_count; sub++) {
streams_size += data->segments[sub]->stream_size;
for (ch = 0; ch < data->segments[sub]->channels; ch++) {
if (streamfiles_size >= streamfiles_max) continue;
streamfiles[streamfiles_size] = get_vgmstream_average_bitrate_channel_streamfile(data->segments[sub], ch);
streamfiles_size++;
}
}
}
else if (vgmstream->layout_type==layout_layered) {
layered_layout_data *data = vgmstream->layout_data;
for (sub = 0; sub < data->layer_count; sub++) {
streams_size += data->layers[sub]->stream_size;
for (ch = 0; ch < data->layers[sub]->channels; ch++) {
if (streamfiles_size >= streamfiles_max) continue;
streamfiles[streamfiles_size] = get_vgmstream_average_bitrate_channel_streamfile(data->layers[sub], ch);
streamfiles_size++;
}
}
}
else {
for (ch = 0; ch < vgmstream->channels; ch++) {
if (streamfiles_size >= streamfiles_max)
continue;
streamfiles[streamfiles_size] = get_vgmstream_average_bitrate_channel_streamfile(vgmstream, ch);
streamfiles_size++;
}
}
if (j == i) { /* current STREAMFILE hasn't appeared in a previous channel */
bitrate += get_vgmstream_average_bitrate_from_streamfile(currentFile, sample_rate, length_samples);
/* could have a sum of all sub-VGMSTREAMs */
if (streams_size) {
return get_vgmstream_average_bitrate_from_size(streams_size, sample_rate, length_samples);
}
/* compare files by absolute paths, so bitrate doesn't multiply when the same STREAMFILE is
* reopened per channel, also skipping repeated pointers. */
{
char path_current[PATH_LIMIT];
char path_compare[PATH_LIMIT];
unsigned int i, j;
for (i = 0; i < streamfiles_size; i++) {
STREAMFILE * currentFile = streamfiles[i];
if (!currentFile) continue;
get_streamfile_name(currentFile, path_current, sizeof(path_current));
for (j = 0; j < i; j++) {
STREAMFILE * compareFile = streamfiles[j];
if (!compareFile) continue;
if (currentFile == compareFile)
break;
get_streamfile_name(compareFile, path_compare, sizeof(path_compare));
if (strcmp(path_current, path_compare) == 0)
break;
}
if (i == j) { /* current STREAMFILE hasn't appeared previously */
bitrate += get_vgmstream_average_bitrate_from_streamfile(currentFile, sample_rate, length_samples);
}
}
}