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h264: execute reference picture marking process (MMCO).

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This commit is contained in:
Gwenole Beauchesne 2012-01-23 15:03:07 +01:00
parent 61753fd55a
commit 8c37221fa5
1 changed files with 59 additions and 2 deletions
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61
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -1463,17 +1463,74 @@ exec_ref_pic_marking_sliding_window(GstVaapiDecoderH264 *decoder)
return TRUE; return TRUE;
} }
/* 8.2.5.4 - Adaptive memory control decoded reference picture marking process */ /* 8.2.5.4. Adaptive memory control decoded reference picture marking process */
static gboolean static gboolean
exec_ref_pic_marking_adaptive( exec_ref_pic_marking_adaptive(
GstVaapiDecoderH264 *decoder, GstVaapiDecoderH264 *decoder,
GstVaapiPictureH264 *picture,
GstH264DecRefPicMarking *dec_ref_pic_marking GstH264DecRefPicMarking *dec_ref_pic_marking
) )
{ {
GstVaapiDecoderH264Private * const priv = decoder->priv; GstVaapiDecoderH264Private * const priv = decoder->priv;
gint32 pic_num, ref_idx;
guint i;
GST_DEBUG("reference picture marking process (adaptive memory control)"); GST_DEBUG("reference picture marking process (adaptive memory control)");
for (i = 0; i < dec_ref_pic_marking->n_ref_pic_marking; i++) {
GstH264RefPicMarking * const ref_pic_marking =
&dec_ref_pic_marking->ref_pic_marking[i];
switch (ref_pic_marking->memory_management_control_operation) {
case 1:
// Mark short-term reference picture as "unused for reference"
if (!picture->field_pic_flag)
pic_num = picture->frame_num_wrap;
else
pic_num = 2 * picture->frame_num_wrap + 1;
pic_num -= ref_pic_marking->difference_of_pic_nums_minus1 + 1;
ref_idx = find_short_term_reference(decoder, pic_num);
if (ref_idx < 0)
break;
remove_reference_at(
decoder,
priv->short_ref, &priv->short_ref_count,
ref_idx
);
break;
case 2:
// Mark long-term reference picture as "unused for reference"
pic_num = picture->long_term_pic_num;
ref_idx = find_long_term_reference(decoder, pic_num);
if (ref_idx < 0)
break;
remove_reference_at(
decoder,
priv->long_ref, &priv->long_ref_count,
ref_idx
);
break;
case 3:
// Assign LongTermFrameIdx to a short-term reference picture
if (!picture->field_pic_flag)
pic_num = picture->frame_num_wrap;
else
pic_num = 2 * picture->frame_num_wrap + 1;
pic_num -= ref_pic_marking->difference_of_pic_nums_minus1 + 1;
ref_idx = find_short_term_reference(decoder, pic_num);
if (ref_idx < 0)
break;
break;
case 5:
// Mark all reference pictures as "unused for reference"
clear_references(decoder, priv->short_ref, &priv->short_ref_count);
clear_references(decoder, priv->long_ref, &priv->long_ref_count );
break;
default:
g_assert(0 && "unhandled MMCO");
break;
}
}
return TRUE; return TRUE;
} }
@ -1491,7 +1548,7 @@ exec_ref_pic_marking(GstVaapiDecoderH264 *decoder, GstVaapiPictureH264 *picture)
GstH264DecRefPicMarking * const dec_ref_pic_marking = GstH264DecRefPicMarking * const dec_ref_pic_marking =
get_dec_ref_pic_marking(picture); get_dec_ref_pic_marking(picture);
if (dec_ref_pic_marking->adaptive_ref_pic_marking_mode_flag) { if (dec_ref_pic_marking->adaptive_ref_pic_marking_mode_flag) {
if (!exec_ref_pic_marking_adaptive(decoder, dec_ref_pic_marking)) if (!exec_ref_pic_marking_adaptive(decoder, picture, dec_ref_pic_marking))
return FALSE; return FALSE;
} }
else { else {