1 /* 2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <stdlib.h> 12 13 #include "./ivfenc.h" 14 #include "./video_writer.h" 15 #include "vpx/vpx_encoder.h" 16 17 struct VpxVideoWriterStruct { 18 VpxVideoInfo info; 19 FILE *file; 20 int frame_count; 21 }; 22 23 static void write_header(FILE *file, const VpxVideoInfo *info, 24 int frame_count) { 25 struct vpx_codec_enc_cfg cfg; 26 cfg.g_w = info->frame_width; 27 cfg.g_h = info->frame_height; 28 cfg.g_timebase.num = info->time_base.numerator; 29 cfg.g_timebase.den = info->time_base.denominator; 30 31 ivf_write_file_header(file, &cfg, info->codec_fourcc, frame_count); 32 } 33 34 VpxVideoWriter *vpx_video_writer_open(const char *filename, 35 VpxContainer container, 36 const VpxVideoInfo *info) { 37 if (container == kContainerIVF) { 38 VpxVideoWriter *writer = NULL; 39 FILE *const file = fopen(filename, "wb"); 40 if (!file) return NULL; 41 42 writer = malloc(sizeof(*writer)); 43 if (!writer) return NULL; 44 45 writer->frame_count = 0; 46 writer->info = *info; 47 writer->file = file; 48 49 write_header(writer->file, info, 0); 50 51 return writer; 52 } 53 54 return NULL; 55 } 56 57 void vpx_video_writer_close(VpxVideoWriter *writer) { 58 if (writer) { 59 // Rewriting frame header with real frame count 60 rewind(writer->file); 61 write_header(writer->file, &writer->info, writer->frame_count); 62 63 fclose(writer->file); 64 free(writer); 65 } 66 } 67 68 int vpx_video_writer_write_frame(VpxVideoWriter *writer, const uint8_t *buffer, 69 size_t size, int64_t pts) { 70 ivf_write_frame_header(writer->file, pts, size); 71 if (fwrite(buffer, 1, size, writer->file) != size) return 0; 72 73 ++writer->frame_count; 74 75 return 1; 76 } 77
