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Added YV12 output format

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Original commit message from CVS:
Added YV12 output format
This commit is contained in:
Wim Taymans 2002-06-21 18:27:46 +00:00
parent ad2e7cd89c
commit c2319d8fa1
2 changed files with 92 additions and 28 deletions
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80
ext/mpeg2dec/gstmpeg2deccvs.c
View file

@ -23,7 +23,7 @@
#include <mpeg2dec/mm_accel.h>
#include <mpeg2dec/video_out.h>
#include "gstmpeg2dec.h"
#include "gstmpeg2deccvs.h"
/* elementfactory information */
static GstElementDetails gst_mpeg2dec_details = {
@ -51,6 +51,13 @@ GST_PAD_TEMPLATE_FACTORY (src_template_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"mpeg2dec_src",
"video/raw",
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('Y','V','1','2')),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
),
GST_CAPS_NEW (
"mpeg2dec_src",
"video/raw",
@ -196,8 +203,14 @@ gst_mpeg2dec_alloc_buffer (GstMpeg2dec *mpeg2dec, mpeg2_info_t *info)
out = GST_BUFFER_DATA (outbuf);
buf[0] = out;
buf[1] = buf[0] + size;
buf[2] = buf[1] + size/4;
if (mpeg2dec->format == MPEG2DEC_FORMAT_I420) {
buf[1] = buf[0] + size;
buf[2] = buf[1] + size/4;
}
else {
buf[2] = buf[0] + size;
buf[1] = buf[2] + size/4;
}
gst_buffer_ref (outbuf);
mpeg2_set_buf (mpeg2dec->decoder, buf, outbuf);
@ -210,6 +223,53 @@ gst_mpeg2dec_alloc_buffer (GstMpeg2dec *mpeg2dec, mpeg2_info_t *info)
return TRUE;
}
static gboolean
gst_mpeg2dec_negotiate_format (GstMpeg2dec *mpeg2dec)
{
GstCaps *allowed;
GstCaps *trylist;
/* we what we are allowed to do */
allowed = gst_pad_get_allowed_caps (mpeg2dec->srcpad);
/* try to fix our height */
trylist = gst_caps_intersect (allowed,
GST_CAPS_NEW (
"mpeg2dec_negotiate",
"video/raw",
"width", GST_PROPS_INT (mpeg2dec->width),
"height", GST_PROPS_INT (mpeg2dec->height)
));
/* prepare for looping */
trylist = gst_caps_normalize (trylist);
while (trylist) {
GstCaps *to_try = gst_caps_copy_1 (trylist);
/* try each format */
if (gst_pad_try_set_caps (mpeg2dec->srcpad, to_try)) {
guint32 fourcc;
/* it worked, try to find what it was again */
gst_caps_get_fourcc_int (to_try, "format", &fourcc);
if (fourcc == GST_STR_FOURCC ("I420")) {
mpeg2dec->format = MPEG2DEC_FORMAT_I420;
}
else {
mpeg2dec->format = MPEG2DEC_FORMAT_YV12;
}
break;
}
trylist = trylist->next;
}
/* oops list exhausted an nothing was found... */
if (!trylist) {
return FALSE;
}
return TRUE;
}
static void
gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
{
@ -270,14 +330,10 @@ gst_mpeg2dec_chain (GstPad *pad, GstBuffer *buf)
mpeg2dec->height = info->sequence->height;
mpeg2dec->total_frames = 0;
gst_pad_try_set_caps (mpeg2dec->srcpad,
GST_CAPS_NEW (
"mpeg2dec_caps",
"video/raw",
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
"width", GST_PROPS_INT (mpeg2dec->width),
"height", GST_PROPS_INT (mpeg2dec->height)
));
if (!gst_mpeg2dec_negotiate_format (mpeg2dec)) {
gst_element_error (GST_ELEMENT (mpeg2dec), "could not negotiate format");
return;
}
gst_mpeg2dec_alloc_buffer (mpeg2dec, info);
break;
@ -605,7 +661,7 @@ gst_mpeg2dec_change_state (GstElement *element)
mpeg2dec->closed = FALSE;
/* reset the initial video state */
mpeg2dec->format = -1;
mpeg2dec->format = MPEG2DEC_FORMAT_NONE;
mpeg2dec->width = -1;
mpeg2dec->height = -1;
mpeg2dec->first = TRUE;

40
ext/mpeg2dec/gstmpeg2deccvs.h
View file

@ -46,31 +46,39 @@ extern "C" {
typedef struct _GstMpeg2dec GstMpeg2dec;
typedef struct _GstMpeg2decClass GstMpeg2decClass;
typedef enum
{
MPEG2DEC_FORMAT_NONE,
MPEG2DEC_FORMAT_I420,
MPEG2DEC_FORMAT_YV12,
} Mpeg2decFormat;
struct _GstMpeg2dec {
GstElement element;
GstElement element;
/* pads */
GstPad *sinkpad,*srcpad;
GstPad *sinkpad,
*srcpad;
GstBufferPool *peerpool;
mpeg2dec_t *decoder;
guint32 accel;
gboolean closed;
mpeg2dec_t *decoder;
guint32 accel;
gboolean closed;
/* the timestamp of the next frame */
gboolean first;
gboolean discont_pending;
gint64 next_time;
gint64 last_PTS;
gint frames_per_PTS;
gint adjust;
gboolean first;
gboolean discont_pending;
gint64 next_time;
gint64 last_PTS;
gint frames_per_PTS;
gint adjust;
/* video state */
gint format;
gint width;
gint height;
gint frame_rate_code;
gint64 total_frames;
Mpeg2decFormat format;
gint width;
gint height;
gint frame_rate_code;
gint64 total_frames;
};
struct _GstMpeg2decClass {