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Implement stride-conversion for I420 and NV12

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This commit is contained in:
Sebastian Dröge 2012-09-11 16:24:49 +02:00
parent 024ac3560d
commit 266bc5bf69
1 changed files with 66 additions and 4 deletions
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70
sys/androidmedia/gstamcvideodec.c
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@ -686,19 +686,81 @@ gst_amc_video_dec_fill_buffer (GstAmcVideoDec * self, gint idx,
const GstAmcBufferInfo * buffer_info, GstBuffer * outbuf)
{
GstAmcBuffer *buf = &self->output_buffers[idx];
GstVideoCodecState *state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (self));
GstVideoInfo *info = &state->info;
gboolean ret = FALSE;
if (idx >= self->n_output_buffers) {
GST_ERROR_OBJECT (self, "Invalid output buffer index %d of %d",
idx, self->n_output_buffers);
return FALSE;
goto done;
}
/* Same video format */
if (buffer_info->size == GST_BUFFER_SIZE (outbuf)) {
memcpy (GST_BUFFER_DATA (outbuf), buf->data, buffer_info->size);
return TRUE;
memcpy (GST_BUFFER_DATA (outbuf), buf->data + buffer_info->offset,
buffer_info->size);
goto done;
}
g_assert_not_reached ();
/* Different video format, try to convert */
switch (self->color_format) {
case COLOR_FormatYUV420Planar:{
gint i, j, height;
guint8 *src, *dest;
gint src_stride, dest_stride;
for (i = 0; i < 3; i++) {
if (i == 0) {
src_stride = self->stride;
dest_stride = GST_VIDEO_INFO_COMP_STRIDE (info, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
} else {
src_stride = self->stride / 2;
dest_stride = GST_VIDEO_INFO_COMP_STRIDE (info, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
}
src = buf->data + buffer_info->offset;
if (i > 0)
src += self->slice_height * self->stride;
if (i == 2)
src += (self->slice_height / 2) * (self->stride / 2);
dest = GST_BUFFER_DATA (outbuf) + GST_VIDEO_INFO_COMP_OFFSET (info, i);
height = GST_VIDEO_INFO_COMP_HEIGHT (info, i);
for (j = 0; j < height; j++) {
memcpy (dest, src, MIN (src_stride, dest_stride));
src += src_stride;
dest += dest_stride;
}
}
ret = TRUE;
break;
}
case COLOR_FormatYUV420SemiPlanar:
case COLOR_TI_FormatYUV420PackedSemiPlanar:
case COLOR_TI_FormatYUV420PackedSemiPlanarInterlaced:
case COLOR_QCOM_FormatYUV420SemiPlanar:
break;
default:
GST_ERROR_OBJECT (self, "Unsupported color format %d",
self->color_format);
goto done;
break;
}
done:
gst_video_codec_state_unref (state);
return ret;
}
static void