From 419c025709132e21ce948c4a6051a323f06ee61d Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 13 May 2015 23:38:49 +0100
Subject: Token effort toward non-bitmap subtitles from FFmpegDecoder.

---
 src/lib/ffmpeg_decoder.cc | 53 ++++++++++++++++++++++++++++++-----------------
 1 file changed, 34 insertions(+), 19 deletions(-)

(limited to 'src/lib/ffmpeg_decoder.cc')

diff --git a/src/lib/ffmpeg_decoder.cc b/src/lib/ffmpeg_decoder.cc
index 6122a547e..35e15a331 100644
--- a/src/lib/ffmpeg_decoder.cc
+++ b/src/lib/ffmpeg_decoder.cc
@@ -453,15 +453,43 @@ FFmpegDecoder::decode_subtitle_packet ()
 	
 	AVSubtitleRect const * rect = sub.rects[0];
 
-	if (rect->type != SUBTITLE_BITMAP) {
-		throw DecodeError (_("non-bitmap subtitles not yet supported"));
+	switch (rect->type) {
+	case SUBTITLE_NONE:
+		break;
+	case SUBTITLE_BITMAP:
+		decode_bitmap_subtitle (rect, period);
+		break;
+	case SUBTITLE_TEXT:
+		cout << "XXX: SUBTITLE_TEXT " << rect->text << "\n";
+		break;
+	case SUBTITLE_ASS:
+		cout << "XXX: SUBTITLE_ASS " << rect->ass << "\n";
+		break;
 	}
+	
+	avsubtitle_free (&sub);
+}
+
+list<ContentTimePeriod>
+FFmpegDecoder::image_subtitles_during (ContentTimePeriod p, bool starting) const
+{
+	return _ffmpeg_content->subtitles_during (p, starting);
+}
 
+list<ContentTimePeriod>
+FFmpegDecoder::text_subtitles_during (ContentTimePeriod, bool) const
+{
+	return list<ContentTimePeriod> ();
+}
+
+void
+FFmpegDecoder::decode_bitmap_subtitle (AVSubtitleRect const * rect, ContentTimePeriod period)
+{
 	/* Note RGBA is expressed little-endian, so the first byte in the word is R, second
 	   G, third B, fourth A.
 	*/
 	shared_ptr<Image> image (new Image (PIX_FMT_RGBA, dcp::Size (rect->w, rect->h), true));
-
+	
 	/* Start of the first line in the subtitle */
 	uint8_t* sub_p = rect->pict.data[0];
 	/* sub_p looks up into a BGRA palette which is here
@@ -470,7 +498,7 @@ FFmpegDecoder::decode_subtitle_packet ()
 	uint32_t const * palette = (uint32_t *) rect->pict.data[1];
 	/* Start of the output data */
 	uint32_t* out_p = (uint32_t *) image->data()[0];
-
+	
 	for (int y = 0; y < rect->h; ++y) {
 		uint8_t* sub_line_p = sub_p;
 		uint32_t* out_line_p = out_p;
@@ -481,7 +509,7 @@ FFmpegDecoder::decode_subtitle_packet ()
 		sub_p += rect->pict.linesize[0];
 		out_p += image->stride()[0] / sizeof (uint32_t);
 	}
-
+	
 	dcp::Size const vs = _ffmpeg_content->video_size ();
 	dcpomatic::Rect<double> const scaled_rect (
 		static_cast<double> (rect->x) / vs.width,
@@ -489,20 +517,7 @@ FFmpegDecoder::decode_subtitle_packet ()
 		static_cast<double> (rect->w) / vs.width,
 		static_cast<double> (rect->h) / vs.height
 		);
-
-	image_subtitle (ContentTimePeriod (period.from, period.to), image, scaled_rect);
 	
-	avsubtitle_free (&sub);
-}
-
-list<ContentTimePeriod>
-FFmpegDecoder::image_subtitles_during (ContentTimePeriod p, bool starting) const
-{
-	return _ffmpeg_content->subtitles_during (p, starting);
+	image_subtitle (period, image, scaled_rect);
 }
 
-list<ContentTimePeriod>
-FFmpegDecoder::text_subtitles_during (ContentTimePeriod, bool) const
-{
-	return list<ContentTimePeriod> ();
-}
-- 
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