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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/common/video_reader.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/third_party/aom/common/video_reader.c b/third_party/aom/common/video_reader.c new file mode 100644 index 0000000000..27f69a9672 --- /dev/null +++ b/third_party/aom/common/video_reader.c @@ -0,0 +1,135 @@ +/* + * 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; + const bool using_file = strcmp(filename, "-") != 0; + FILE *const file = + using_file ? fopen(filename, "rb") : set_binary_mode(stdin); + 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; + + // TODO(https://crbug.com/aomedia/1706): webm type does not support reading + // from stdin yet, and file_is_webm is not using the detect buffer when + // determining the type. Therefore it should only be checked when using a file + // and needs to be checked prior to other types. + if (false) { +#if CONFIG_WEBM_IO + } else if (using_file && + 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_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; + } 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, &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; +} + +void aom_video_reader_set_fourcc(AvxVideoReader *reader, uint32_t fourcc) { + reader->info.codec_fourcc = fourcc; +} |