diff options
Diffstat (limited to 'media/libvpx/libvpx/video_writer.c')
-rw-r--r-- | media/libvpx/libvpx/video_writer.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/video_writer.c b/media/libvpx/libvpx/video_writer.c new file mode 100644 index 0000000000..6e9a848bc3 --- /dev/null +++ b/media/libvpx/libvpx/video_writer.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2014 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 <stdlib.h> + +#include "./ivfenc.h" +#include "./video_writer.h" +#include "vpx/vpx_encoder.h" + +struct VpxVideoWriterStruct { + VpxVideoInfo info; + FILE *file; + int frame_count; +}; + +static void write_header(FILE *file, const VpxVideoInfo *info, + int frame_count) { + struct vpx_codec_enc_cfg cfg; + cfg.g_w = info->frame_width; + cfg.g_h = info->frame_height; + cfg.g_timebase.num = info->time_base.numerator; + cfg.g_timebase.den = info->time_base.denominator; + + ivf_write_file_header(file, &cfg, info->codec_fourcc, frame_count); +} + +VpxVideoWriter *vpx_video_writer_open(const char *filename, + VpxContainer container, + const VpxVideoInfo *info) { + if (container == kContainerIVF) { + VpxVideoWriter *writer = NULL; + FILE *const file = fopen(filename, "wb"); + if (!file) { + fprintf(stderr, "%s can't be written to.\n", filename); + return NULL; + } + writer = malloc(sizeof(*writer)); + if (!writer) { + fprintf(stderr, "Can't allocate VpxVideoWriter.\n"); + return NULL; + } + writer->frame_count = 0; + writer->info = *info; + writer->file = file; + + write_header(writer->file, info, 0); + + return writer; + } + fprintf(stderr, "VpxVideoWriter supports only IVF.\n"); + return NULL; +} + +void vpx_video_writer_close(VpxVideoWriter *writer) { + if (writer) { + // Rewriting frame header with real frame count + rewind(writer->file); + write_header(writer->file, &writer->info, writer->frame_count); + + fclose(writer->file); + free(writer); + } +} + +int vpx_video_writer_write_frame(VpxVideoWriter *writer, const uint8_t *buffer, + size_t size, int64_t pts) { + ivf_write_frame_header(writer->file, pts, size); + if (fwrite(buffer, 1, size, writer->file) != size) return 0; + + ++writer->frame_count; + + return 1; +} |