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-rw-r--r--media/libaom/src/common/video_reader.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/media/libaom/src/common/video_reader.c b/media/libaom/src/common/video_reader.c
new file mode 100644
index 000000000..47ad6e189
--- /dev/null
+++ b/media/libaom/src/common/video_reader.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "aom_ports/mem_ops.h"
+#include "common/ivfdec.h"
+#include "common/obudec.h"
+#include "common/tools_common.h"
+#include "common/video_reader.h"
+#include "common/webmdec.h"
+
+struct AvxVideoReaderStruct {
+ AvxVideoInfo info;
+ struct AvxInputContext input_ctx;
+ struct ObuDecInputContext obu_ctx;
+ struct WebmInputContext webm_ctx;
+ uint8_t *buffer;
+ size_t buffer_size;
+ size_t frame_size;
+ aom_codec_pts_t pts;
+};
+
+AvxVideoReader *aom_video_reader_open(const char *filename) {
+ AvxVideoReader *reader = NULL;
+ FILE *const file = fopen(filename, "rb");
+ if (!file) return NULL; // Can't open file
+
+ reader = (AvxVideoReader *)calloc(1, sizeof(*reader));
+ if (!reader) {
+ fclose(file);
+ return NULL; // Can't allocate AvxVideoReader
+ }
+
+ reader->input_ctx.filename = filename;
+ reader->input_ctx.file = file;
+ reader->obu_ctx.avx_ctx = &reader->input_ctx;
+ reader->obu_ctx.is_annexb = 1;
+
+ if (file_is_ivf(&reader->input_ctx)) {
+ reader->input_ctx.file_type = FILE_TYPE_IVF;
+ reader->info.codec_fourcc = reader->input_ctx.fourcc;
+ reader->info.frame_width = reader->input_ctx.width;
+ reader->info.frame_height = reader->input_ctx.height;
+#if CONFIG_WEBM_IO
+ } else if (file_is_webm(&reader->webm_ctx, &reader->input_ctx)) {
+ reader->input_ctx.file_type = FILE_TYPE_WEBM;
+ reader->info.codec_fourcc = reader->input_ctx.fourcc;
+ reader->info.frame_width = reader->input_ctx.width;
+ reader->info.frame_height = reader->input_ctx.height;
+#endif
+ } else if (file_is_obu(&reader->obu_ctx)) {
+ reader->input_ctx.file_type = FILE_TYPE_OBU;
+ // assume AV1
+ reader->info.codec_fourcc = AV1_FOURCC;
+ reader->info.is_annexb = reader->obu_ctx.is_annexb;
+ } else {
+ fclose(file);
+ free(reader);
+ return NULL; // Unknown file type
+ }
+
+ return reader;
+}
+
+void aom_video_reader_close(AvxVideoReader *reader) {
+ if (reader) {
+ fclose(reader->input_ctx.file);
+ if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
+ obudec_free(&reader->obu_ctx);
+ }
+ free(reader->buffer);
+ free(reader);
+ }
+}
+
+int aom_video_reader_read_frame(AvxVideoReader *reader) {
+ if (reader->input_ctx.file_type == FILE_TYPE_IVF) {
+ return !ivf_read_frame(reader->input_ctx.file, &reader->buffer,
+ &reader->frame_size, &reader->buffer_size,
+ &reader->pts);
+ } else if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
+ return !obudec_read_temporal_unit(&reader->obu_ctx, &reader->buffer,
+ &reader->frame_size,
+ &reader->buffer_size);
+#if CONFIG_WEBM_IO
+ } else if (reader->input_ctx.file_type == FILE_TYPE_WEBM) {
+ return !webm_read_frame(&reader->webm_ctx, &reader->buffer,
+ &reader->frame_size, &reader->buffer_size);
+#endif
+ } else {
+ assert(0);
+ return 0;
+ }
+}
+
+const uint8_t *aom_video_reader_get_frame(AvxVideoReader *reader,
+ size_t *size) {
+ if (size) *size = reader->frame_size;
+
+ return reader->buffer;
+}
+
+int64_t aom_video_reader_get_frame_pts(AvxVideoReader *reader) {
+ return (int64_t)reader->pts;
+}
+
+FILE *aom_video_reader_get_file(AvxVideoReader *reader) {
+ return reader->input_ctx.file;
+}
+
+const AvxVideoInfo *aom_video_reader_get_info(AvxVideoReader *reader) {
+ return &reader->info;
+}