various changes to rendering flow and structure

2019-10-23 00:42:52 +11:00
parent 5f86b9b9c7
commit 7dec79ceaa
42 changed files with 663 additions and 888 deletions
@@ -0,0 +1,89 @@
+#include "audioparams.h"
+
+extern "C" {
+#include <libavformat/avformat.h>
+}
+
+AudioParams::AudioParams() :
+  sample_rate_(0),
+  channel_layout_(0)
+{
+}
+
+AudioParams::AudioParams(const int &sample_rate, const uint64_t &channel_layout) :
+  sample_rate_(sample_rate),
+  channel_layout_(channel_layout)
+{
+}
+
+const int &AudioParams::sample_rate() const
+{
+  return sample_rate_;
+}
+
+const uint64_t &AudioParams::channel_layout() const
+{
+  return channel_layout_;
+}
+
+AudioRenderingParams::AudioRenderingParams() :
+  format_(olive::SAMPLE_FMT_INVALID)
+{
+}
+
+AudioRenderingParams::AudioRenderingParams(const int &sample_rate, const uint64_t &channel_layout, const olive::SampleFormat &format) :
+  AudioParams(sample_rate, channel_layout),
+  format_(format)
+{
+}
+
+AudioRenderingParams::AudioRenderingParams(const AudioParams &params, const olive::SampleFormat &format) :
+  AudioParams(params),
+  format_(format)
+{
+}
+
+const olive::SampleFormat &AudioRenderingParams::format() const
+{
+  return format_;
+}
+
+int AudioRenderingParams::time_to_bytes(const rational &time) const
+{
+  Q_ASSERT(is_valid());
+
+  return qFloor(time.toDouble() * sample_rate()) * channel_count() * sample_size();
+}
+
+int AudioRenderingParams::channel_count() const
+{
+  return av_get_channel_layout_nb_channels(channel_layout());
+}
+
+int AudioRenderingParams::sample_size() const
+{
+  switch (format_) {
+  case olive::SAMPLE_FMT_U8:
+    return 1;
+  case olive::SAMPLE_FMT_S16:
+    return 2;
+  case olive::SAMPLE_FMT_S32:
+  case olive::SAMPLE_FMT_FLT:
+    return 4;
+  case olive::SAMPLE_FMT_DBL:
+    return 8;
+  case olive::SAMPLE_FMT_INVALID:
+  case olive::SAMPLE_FMT_COUNT:
+    break;
+  }
+
+  return 0;
+}
+
+bool AudioRenderingParams::is_valid() const
+{
+  return (sample_rate() > 0
+          && channel_layout() > 0
+          && format_ != olive::SAMPLE_FMT_INVALID
+          && format_ != olive::SAMPLE_FMT_COUNT);
+}