blob: cb1b0ddaf806f3a5031605fd813ea2b41f7b3110 [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/formats/webm/webm_video_client.h"
#include "media/base/video_decoder_config.h"
#include "media/formats/webm/webm_constants.h"
namespace media {
WebMVideoClient::WebMVideoClient(MediaLog* media_log) : media_log_(media_log) {
Reset();
}
WebMVideoClient::~WebMVideoClient() {
}
void WebMVideoClient::Reset() {
pixel_width_ = -1;
pixel_height_ = -1;
crop_bottom_ = -1;
crop_top_ = -1;
crop_left_ = -1;
crop_right_ = -1;
display_width_ = -1;
display_height_ = -1;
display_unit_ = -1;
alpha_mode_ = -1;
colour_parsed_ = false;
}
bool WebMVideoClient::InitializeConfig(
const std::string& codec_id,
const std::vector<uint8_t>& codec_private,
const EncryptionScheme& encryption_scheme,
VideoDecoderConfig* config) {
DCHECK(config);
VideoCodec video_codec = kUnknownVideoCodec;
VideoCodecProfile profile = VIDEO_CODEC_PROFILE_UNKNOWN;
if (codec_id == "V_VP8") {
video_codec = kCodecVP8;
profile = VP8PROFILE_ANY;
} else if (codec_id == "V_VP9") {
video_codec = kCodecVP9;
// TODO(servolk): Find a way to read actual VP9 profile from WebM.
// crbug.com/592074
profile = VP9PROFILE_PROFILE0;
} else {
MEDIA_LOG(ERROR, media_log_) << "Unsupported video codec_id " << codec_id;
return false;
}
VideoPixelFormat format =
(alpha_mode_ == 1) ? PIXEL_FORMAT_YV12A : PIXEL_FORMAT_YV12;
if (pixel_width_ <= 0 || pixel_height_ <= 0)
return false;
// Set crop and display unit defaults if these elements are not present.
if (crop_bottom_ == -1)
crop_bottom_ = 0;
if (crop_top_ == -1)
crop_top_ = 0;
if (crop_left_ == -1)
crop_left_ = 0;
if (crop_right_ == -1)
crop_right_ = 0;
if (display_unit_ == -1)
display_unit_ = 0;
gfx::Size coded_size(pixel_width_, pixel_height_);
gfx::Rect visible_rect(crop_top_, crop_left_,
pixel_width_ - (crop_left_ + crop_right_),
pixel_height_ - (crop_top_ + crop_bottom_));
if (display_unit_ == 0) {
if (display_width_ <= 0)
display_width_ = visible_rect.width();
if (display_height_ <= 0)
display_height_ = visible_rect.height();
} else if (display_unit_ == 3) {
if (display_width_ <= 0 || display_height_ <= 0)
return false;
} else {
MEDIA_LOG(ERROR, media_log_) << "Unsupported display unit type "
<< display_unit_;
return false;
}
gfx::Size natural_size = gfx::Size(display_width_, display_height_);
config->Initialize(video_codec, profile, format, COLOR_SPACE_HD_REC709,
VIDEO_ROTATION_0, coded_size, visible_rect, natural_size,
codec_private, encryption_scheme);
if (colour_parsed_) {
WebMColorMetadata color_metadata = colour_parser_.GetWebMColorMetadata();
config->set_color_space_info(color_metadata.color_space);
config->set_hdr_metadata(color_metadata.hdr_metadata);
}
return config->IsValidConfig();
}
WebMParserClient* WebMVideoClient::OnListStart(int id) {
if (id == kWebMIdColour) {
colour_parsed_ = false;
return &colour_parser_;
}
return this;
}
bool WebMVideoClient::OnListEnd(int id) {
if (id == kWebMIdColour)
colour_parsed_ = true;
return true;
}
bool WebMVideoClient::OnUInt(int id, int64_t val) {
int64_t* dst = NULL;
switch (id) {
case kWebMIdPixelWidth:
dst = &pixel_width_;
break;
case kWebMIdPixelHeight:
dst = &pixel_height_;
break;
case kWebMIdPixelCropTop:
dst = &crop_top_;
break;
case kWebMIdPixelCropBottom:
dst = &crop_bottom_;
break;
case kWebMIdPixelCropLeft:
dst = &crop_left_;
break;
case kWebMIdPixelCropRight:
dst = &crop_right_;
break;
case kWebMIdDisplayWidth:
dst = &display_width_;
break;
case kWebMIdDisplayHeight:
dst = &display_height_;
break;
case kWebMIdDisplayUnit:
dst = &display_unit_;
break;
case kWebMIdAlphaMode:
dst = &alpha_mode_;
break;
default:
return true;
}
if (*dst != -1) {
MEDIA_LOG(ERROR, media_log_) << "Multiple values for id " << std::hex << id
<< " specified (" << *dst << " and " << val
<< ")";
return false;
}
*dst = val;
return true;
}
bool WebMVideoClient::OnBinary(int id, const uint8_t* data, int size) {
// Accept binary fields we don't care about for now.
return true;
}
bool WebMVideoClient::OnFloat(int id, double val) {
// Accept float fields we don't care about for now.
return true;
}
} // namespace media