Reset Git repo and use a pseudonym to sign commits

I used to sign my commits with my real name and my personal email
address, which I wanted scrubbed off the "B." pseudosphere. Re-creating
a new git repository was safer than simpler than re-writing the
history (although the latter could've also worked but, oh well).

1 files changed, 69 insertions, 0 deletions

diff --git a/audio/encoder.c b/audio/encoder.c
new file mode 100644
index 0000000..17cf2d2
--- /dev/null
+++ b/audio/encoder.c
@@ -0,0 +1,69 @@
+#include "encoder.h"
+#include <assert.h>
+
+int encoder_init (struct Encoder *encoder, const AVCodecParameters *codecpar, AVDictionary **opts)
+{
+	/* NOTE: While encoder->time_base "MUST be set by user" when encoding
+	 * (quoted from the official FFMPEG documentation), avcodec_open2 actually
+	 * discard it's value and set it to '1/sample_rate'.
+	 *
+	 * NOTE: The assert at the end of this section serves to protect cybd in
+	 * case the FFMPEG devs update their code to implement some funny behaviors.
+	 */
+	int err;
+	AVCodecContext *avctx;
+	const AVCodec *codec;
+
+	if ((codec = avcodec_find_encoder(codecpar->codec_id)) == NULL) {
+		err = AVERROR_ENCODER_NOT_FOUND;
+		goto error;
+	}
+
+	if ((avctx = avcodec_alloc_context3(codec)) == NULL)
+		return AVERROR(ENOMEM);
+
+	if ((err = avcodec_parameters_to_context(avctx, codecpar)) < 0)
+		goto error;
+
+	if ((err = avcodec_open2(avctx, codec, opts)))
+		goto error;
+
+	/* Because some code rely on avctx's time base to be 1/sample_rate, and
+	 * because this behavious currently appears undocumented, I placed some
+	 * assert here to catch up if anything changes up with ffmpeg. */
+	assert(avctx->time_base.num == 1);
+	assert(avctx->time_base.den == avctx->sample_rate);
+	encoder->avctx = avctx;
+	encoder->pts   = 0;
+	return 0;
+
+error:
+	avcodec_free_context(&avctx);
+	return err;
+}
+
+int encoder_init_for_stream (struct Encoder *encoder, const AVStream *stream, AVDictionary **opts)
+{
+	return encoder_init(encoder, stream->codecpar, opts);
+}
+
+int encoder_send (struct Encoder *encoder, const AVFrame *frame)
+{
+	return avcodec_send_frame(encoder->avctx, frame);
+}
+
+int encoder_convert (struct Encoder *encoder, AVPacket *pkt_out)
+{
+	int err;
+	err = avcodec_receive_packet(encoder->avctx, pkt_out);
+	if (err < 0) return err;
+	// Manually setting pts because FFMPEG doesn't do it consistantly
+	//pkt_out->pts = encoder->pts;
+	//encoder->pts += pkt_out->duration;
+	return 0;
+}
+
+void encoder_free (struct Encoder *encoder)
+{
+	avcodec_free_context(&encoder->avctx);
+}