Function cbfs_payload_decompress

util/cbfstool/cbfs_image.c:840–930

}

static int cbfs_payload_decompress(struct cbfs_payload_segment *segments,
		struct buffer *buff, int num_seg)
{
	struct buffer new_buffer;
	struct buffer seg_buffer;
	size_t new_buff_sz;
	char *in_ptr;
	char *out_ptr;
	size_t new_offset;
	decomp_func_ptr decompress;

	new_offset = num_seg * sizeof(*segments);
	new_buff_sz = num_seg * sizeof(*segments);

	/* Find out and allocate the amount of memory occupied
	 * by the binary data */
	for (int i = 0; i < num_seg; i++)
		new_buff_sz += segments[i].mem_len;

	if (buffer_create(&new_buffer, new_buff_sz, "decompressed_buff"))
		return -1;

	in_ptr = buffer_get(buff) + new_offset;
	out_ptr = buffer_get(&new_buffer) + new_offset;

	for (int i = 0; i < num_seg; i++) {
		struct buffer tbuff;
		size_t decomp_size;

		/* Segments BSS and ENTRY do not have binary data. */
		if (segments[i].type == PAYLOAD_SEGMENT_BSS ||
				segments[i].type == PAYLOAD_SEGMENT_ENTRY) {
			continue;
		} else if (segments[i].type == PAYLOAD_SEGMENT_DEPRECATED_PARAMS) {
			memcpy(out_ptr, in_ptr, segments[i].len);
			segments[i].offset = new_offset;
			new_offset += segments[i].len;
			in_ptr += segments[i].len;
			out_ptr += segments[i].len;
			segments[i].compression = CBFS_COMPRESS_NONE;
			continue;
		}

		/* The payload uses an unknown compression algorithm. */
		decompress = decompression_function(segments[i].compression);
		if (decompress == NULL) {
			ERROR("Unknown decompression algorithm: %u\n",
					segments[i].compression);
			return -1;
		}

		if (buffer_create(&tbuff, segments[i].mem_len, "segment")) {
			buffer_delete(&new_buffer);
			return -1;
		}

		if (decompress(in_ptr, segments[i].len, buffer_get(&tbuff),
					(int) buffer_size(&tbuff),