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Fix gst_vaapi_profile_get_codec().

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Improve gst_vaapi_profile_from_caps() for H.264 & caps with "codec-data".
This commit is contained in:
gb 2010-04-26 13:30:27 +00:00 committed by Gwenole Beauchesne
parent d7e4bca05b
commit eddf6b0d6c
1 changed files with 69 additions and 6 deletions
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75
gst-libs/gst/vaapi/gstvaapiprofile.c
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@ -25,9 +25,13 @@
#include "config.h"
#include <string.h>
#include <gst/gstbuffer.h>
#include "gstvaapicompat.h"
#include "gstvaapiprofile.h"
#define GST_VAAPI_PROFILE_CODEC(profile) \
((GstVaapiCodec)(((guint32)profile) & GST_MAKE_FOURCC(0xff,0xff,0xff,0)))
typedef struct _GstVaapiProfileMap GstVaapiProfileMap;
typedef struct _GstVaapiEntrypointMap GstVaapiEntrypointMap;
@ -136,6 +140,51 @@ gst_vaapi_profile(VAProfile profile)
return 0;
}
/**
* gst_vaapi_profile_from_codec_data:
* @codec: a #GstVaapiCodec
* @buffer: a #GstBuffer holding code data
*
* Tries to parse VA profile from @buffer data and @codec information.
*
* Return value: the #GstVaapiProfile described in @buffer
*/
static GstVaapiProfile
gst_vaapi_profile_from_codec_data_h264(GstBuffer *buffer)
{
/* MPEG-4 Part 15: Advanced Video Coding (AVC) file format */
uint8_t * const buf = GST_BUFFER_DATA(buffer);
if (buf[0] != 1) /* configurationVersion = 1 */
return 0;
switch (buf[1]) { /* AVCProfileIndication */
case 66: return GST_VAAPI_PROFILE_H264_BASELINE;
case 77: return GST_VAAPI_PROFILE_H264_MAIN;
case 100: return GST_VAAPI_PROFILE_H264_HIGH;
}
return 0;
}
static GstVaapiProfile
gst_vaapi_profile_from_codec_data(GstVaapiCodec codec, GstBuffer *buffer)
{
GstVaapiProfile profile;
if (!codec || !buffer)
return 0;
switch (codec) {
case GST_VAAPI_CODEC_H264:
profile = gst_vaapi_profile_from_codec_data_h264(buffer);
break;
default:
profile = 0;
break;
}
return profile;
}
/**
* gst_vaapi_profile_from_caps:
* @caps: a #GstCaps
@ -152,9 +201,10 @@ gst_vaapi_profile_from_caps(GstCaps *caps)
const GstVaapiProfileMap *m;
GstCaps *caps_test;
GstStructure *structure;
GstVaapiProfile profile;
GstBuffer *codec_data = NULL;
const gchar *name;
gsize namelen;
gboolean found;
if (!caps)
return 0;
@ -166,15 +216,28 @@ gst_vaapi_profile_from_caps(GstCaps *caps)
name = gst_structure_get_name(structure);
namelen = strlen(name);
found = FALSE;
for (m = gst_vaapi_profiles; !found && m->profile; m++) {
if (!gst_structure_has_field(structure, "profile")) {
const GValue *v_codec_data;
v_codec_data = gst_structure_get_value(structure, "codec_data");
if (v_codec_data)
codec_data = gst_value_get_buffer(v_codec_data);
}
profile = 0;
for (m = gst_vaapi_profiles; !profile && m->profile; m++) {
if (strncmp(name, m->caps_str, namelen) != 0)
continue;
caps_test = gst_caps_from_string(m->caps_str);
found = gst_caps_is_always_compatible(caps_test, caps);
if (gst_caps_is_always_compatible(caps, caps_test))
profile = m->profile;
else if (codec_data)
profile = gst_vaapi_profile_from_codec_data(
GST_VAAPI_PROFILE_CODEC(m->profile),
codec_data
);
gst_caps_unref(caps_test);
}
return found ? m->va_profile : 0;
return profile;
}
/**
@ -223,7 +286,7 @@ gst_vaapi_profile_get_caps(GstVaapiProfile profile)
GstVaapiCodec
gst_vaapi_profile_get_codec(GstVaapiProfile profile)
{
return (GstVaapiCodec)(((guint32)profile) & 0xffffff00);
return GST_VAAPI_PROFILE_CODEC(profile);
}
/**