44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
#include "layout.h"
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#include "../vgmstream.h"
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#include "../base/decode.h"
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/* Decodes samples for flat streams.
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* Data forms a single stream, and the decoder may internally skip chunks and move offsets as needed. */
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void render_vgmstream_flat(sample_t* outbuf, int32_t sample_count, VGMSTREAM* vgmstream) {
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int samples_written = 0;
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int samples_per_frame, samples_this_block;
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samples_per_frame = decode_get_samples_per_frame(vgmstream);
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samples_this_block = vgmstream->num_samples; /* do all samples if possible */
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while (samples_written < sample_count) {
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int samples_to_do;
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if (vgmstream->loop_flag && decode_do_loop(vgmstream)) {
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/* handle looping */
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continue;
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}
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samples_to_do = decode_get_samples_to_do(samples_this_block, samples_per_frame, vgmstream);
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if (samples_to_do > sample_count - samples_written)
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samples_to_do = sample_count - samples_written;
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if (samples_to_do == 0) { /* when decoding more than num_samples */
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VGM_LOG_ONCE("FLAT: samples_to_do 0\n");
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goto decode_fail;
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}
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decode_vgmstream(vgmstream, samples_written, samples_to_do, outbuf);
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samples_written += samples_to_do;
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vgmstream->current_sample += samples_to_do;
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vgmstream->samples_into_block += samples_to_do;
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}
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return;
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decode_fail:
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memset(outbuf + samples_written * vgmstream->channels, 0, (sample_count - samples_written) * vgmstream->channels * sizeof(sample_t));
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}
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