static GstVaapiDecoderStatus
gst_vaapi_decoder_jpeg_decode (GstVaapiDecoder * base_decoder,
GstVaapiDecoderUnit * unit)
{
GstVaapiDecoderJpeg *const decoder =
GST_VAAPI_DECODER_JPEG_CAST (base_decoder);
GstVaapiDecoderStatus status;
GstJpegSegment seg;
GstBuffer *const buffer =
GST_VAAPI_DECODER_CODEC_FRAME (decoder)->input_buffer;
GstMapInfo map_info;
status = ensure_decoder (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
if (!gst_buffer_map (buffer, &map_info, GST_MAP_READ)) {
GST_ERROR ("failed to map buffer");
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
seg.marker = unit_get_marker_code (unit);
seg.data = map_info.data;
seg.offset = unit->offset;
seg.size = unit->size;
status = decode_segment (decoder, &seg);
gst_buffer_unmap (buffer, &map_info);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
/**
* Writes a coap option from given string @p s to @p buf. @p s should
* point to a (percent-encoded) path or query segment of a coap_uri_t
* object. The created option will have type @c 0, and the length
* parameter will be set according to the size of the decoded string.
* On success, this function returns the option's size, or a value
* less than zero on error. This function must be called from
* coap_split_path_impl() only.
*
* @param s The string to decode.
* @param length The size of the percent-encoded string @p s.
* @param buf The buffer to store the new coap option.
* @param buflen The maximum size of @p buf.
*
* @return The option's size, or @c -1 on error.
*
* @bug This function does not split segments that are bigger than 270
* bytes.
*/
static int
make_decoded_option(const unsigned char *s, size_t length,
unsigned char *buf, size_t buflen) {
int res;
size_t written;
if (!buflen) {
debug("make_decoded_option(): buflen is 0!\n");
return -1;
}
res = check_segment(s, length);
if (res < 0)
return -1;
/* write option header using delta 0 and length res */
written = coap_opt_setheader(buf, buflen, 0, res);
assert(written <= buflen);
if (!written) /* encoding error */
return -1;
buf += written; /* advance past option type/length */
buflen -= written;
if (buflen < (size_t)res) {
debug("buffer too small for option\n");
return -1;
}
decode_segment(s, length, buf);
return written + res;
}
