vpx[dec|enc]: Extract IVF support from the apps.
- Move IVF reading support into ivfdec.c and ivfdec.h
- Move IVF writing support into ivfenc.c and ivfenc.h
- Removed IVF writing code from the SVC example in favor of ivfenc.
Change-Id: I70adf6240d0320fdd232d8546ed573f0f68dd793
diff --git a/ivfenc.c b/ivfenc.c
new file mode 100644
index 0000000..fa92566
--- /dev/null
+++ b/ivfenc.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "./ivfenc.h"
+
+#include "./tools_common.h"
+#include "vpx/vpx_encoder.h"
+#include "vpx_ports/mem_ops.h"
+
+void ivf_write_file_header(FILE *outfile,
+ const struct vpx_codec_enc_cfg *cfg,
+ unsigned int fourcc,
+ int frame_cnt) {
+ char header[32];
+
+ if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
+ return;
+
+ header[0] = 'D';
+ header[1] = 'K';
+ header[2] = 'I';
+ header[3] = 'F';
+ mem_put_le16(header + 4, 0); /* version */
+ mem_put_le16(header + 6, 32); /* headersize */
+ mem_put_le32(header + 8, fourcc); /* four CC */
+ mem_put_le16(header + 12, cfg->g_w); /* width */
+ mem_put_le16(header + 14, cfg->g_h); /* height */
+ mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
+ mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
+ mem_put_le32(header + 24, frame_cnt); /* length */
+ mem_put_le32(header + 28, 0); /* unused */
+
+ (void) fwrite(header, 1, 32, outfile);
+}
+
+void ivf_write_frame_header(FILE *outfile, const struct vpx_codec_cx_pkt *pkt) {
+ char header[12];
+ vpx_codec_pts_t pts;
+
+ if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
+ return;
+
+ pts = pkt->data.frame.pts;
+ mem_put_le32(header, (int)pkt->data.frame.sz);
+ mem_put_le32(header + 4, pts & 0xFFFFFFFF);
+ mem_put_le32(header + 8, pts >> 32);
+
+ (void) fwrite(header, 1, 12, outfile);
+}
+
+void ivf_write_frame_size(FILE *outfile, size_t size) {
+ char header[4];
+ mem_put_le32(header, (int)size);
+ (void) fwrite(header, 1, 4, outfile);
+}
