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ext/mpeg2dec/gstmpeg2dec.c: Simplify the framerate code and support more framerates. Fixes #361584.

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Original commit message from CVS:
Patch by: Jan Arne Petersen <jpetersen at jpetersen dot org>
* ext/mpeg2dec/gstmpeg2dec.c: (handle_sequence), (handle_slice):
Simplify the framerate code and support more framerates. Fixes #361584.
This commit is contained in:
Jan Arne Petersen 2006-11-15 13:57:21 +00:00 committed by Wim Taymans
parent dc26edbddf
commit d88990ffc9
2 changed files with 11 additions and 21 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2006-11-15 Wim Taymans <wim@fluendo.com>
Patch by: Jan Arne Petersen <jpetersen at jpetersen dot org>
* ext/mpeg2dec/gstmpeg2dec.c: (handle_sequence), (handle_slice):
Simplify the framerate code and support more framerates. Fixes #361584.
2006-11-15 Tim-Philipp Müller <tim at centricular dot net>
Patch by: Sebastian Dröge <slomo@circular-chaos.org>

25
ext/mpeg2dec/gstmpeg2dec.c
View file

@ -46,18 +46,6 @@ typedef gint mpeg2_state_t;
GST_DEBUG_CATEGORY_STATIC (mpeg2dec_debug);
#define GST_CAT_DEFAULT (mpeg2dec_debug)
/* table with framerates expressed as fractions */
static const gint fpss[][2] = { {24000, 1001},
{24, 1}, {25, 1}, {30000, 1001},
{30, 1}, {50, 1}, {60000, 1001},
{60, 1}, {0, 1}
};
/* frame periods */
static const guint frame_periods[] = {
1126125, 1125000, 1080000, 900900, 900000, 540000, 450450, 450000, 0
};
/* elementfactory information */
static const GstElementDetails gst_mpeg2dec_details =
GST_ELEMENT_DETAILS ("mpeg1 and mpeg2 video decoder",
@ -94,7 +82,7 @@ GST_STATIC_PAD_TEMPLATE ("src",
"format = (fourcc) { YV12, I420, Y42B }, "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], "
"framerate = (fraction) { 24000/1001, 24/1, 25/1, 30000/1001, 30/1, 50/1, 60000/1001, 60/1 }")
"framerate = (fraction) [ 0/1, 2147483647/1 ]")
);
static void gst_mpeg2dec_base_init (gpointer g_class);
@ -610,7 +598,6 @@ init_dummybuf (GstMpeg2dec * mpeg2dec)
static GstFlowReturn
handle_sequence (GstMpeg2dec * mpeg2dec, const mpeg2_info_t * info)
{
gint i;
GstFlowReturn ret = GST_FLOW_OK;
mpeg2dec->width = info->sequence->picture_width;
@ -621,13 +608,9 @@ handle_sequence (GstMpeg2dec * mpeg2dec, const mpeg2_info_t * info)
mpeg2dec->decoded_height = info->sequence->height;
mpeg2dec->total_frames = 0;
/* find framerate */
for (i = 0; i < 9; i++) {
if (info->sequence->frame_period == frame_periods[i]) {
mpeg2dec->fps_n = fpss[i][0];
mpeg2dec->fps_d = fpss[i][1];
}
}
/* set framerate */
mpeg2dec->fps_n = 27000000;
mpeg2dec->fps_d = info->sequence->frame_period;
mpeg2dec->frame_period = info->sequence->frame_period * GST_USECOND / 27;
GST_DEBUG_OBJECT (mpeg2dec,