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video_decoder.cc
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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/cpp/video_decoder.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/ppb_video_decoder.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/instance_handle.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/module_impl.h"
namespace pp {
namespace {
template <>
const char* interface_name<PPB_VideoDecoder_0_1>() {
return PPB_VIDEODECODER_INTERFACE_0_1;
}
template <>
const char* interface_name<PPB_VideoDecoder_0_2>() {
return PPB_VIDEODECODER_INTERFACE_0_2;
}
template <>
const char* interface_name<PPB_VideoDecoder_1_0>() {
return PPB_VIDEODECODER_INTERFACE_1_0;
}
template <>
const char* interface_name<PPB_VideoDecoder_1_1>() {
return PPB_VIDEODECODER_INTERFACE_1_1;
}
// This struct is used to adapt CompletionCallbackWithOutput<PP_VideoPicture> to
// the pre-1.0 APIs, which return PP_VideoPicture_0_1. This struct is allocated
// on the heap, and deleted in CallbackConverter.
struct CallbackData_0_1 {
explicit CallbackData_0_1(
const CompletionCallbackWithOutput<PP_VideoPicture>& cc)
: original_picture(cc.output()),
original_callback(cc.pp_completion_callback()) {}
PP_VideoPicture_0_1 picture;
PP_VideoPicture* original_picture;
PP_CompletionCallback original_callback;
};
// Convert a 1.0 style callback to pre-1.0 callback.
void CallbackConverter(void* user_data, int32_t result) {
CallbackData_0_1* data = static_cast<CallbackData_0_1*>(user_data);
if (result == PP_OK) {
PP_VideoPicture_0_1* picture = &data->picture;
PP_VideoPicture* original_picture = data->original_picture;
original_picture->decode_id = picture->decode_id;
original_picture->texture_id = picture->texture_id;
original_picture->texture_target = picture->texture_target;
original_picture->texture_size = picture->texture_size;
// Set visible_rect to the entire picture.
original_picture->visible_rect = PP_MakeRectFromXYWH(
0, 0, picture->texture_size.width, picture->texture_size.height);
}
// Now execute the original callback.
PP_RunCompletionCallback(&data->original_callback, result);
delete data;
}
} // namespace
VideoDecoder::VideoDecoder() {
}
VideoDecoder::VideoDecoder(const InstanceHandle& instance) {
if (has_interface<PPB_VideoDecoder_1_1>()) {
PassRefFromConstructor(
get_interface<PPB_VideoDecoder_1_1>()->Create(instance.pp_instance()));
} else if (has_interface<PPB_VideoDecoder_1_0>()) {
PassRefFromConstructor(
get_interface<PPB_VideoDecoder_1_0>()->Create(instance.pp_instance()));
} else if (has_interface<PPB_VideoDecoder_0_2>()) {
PassRefFromConstructor(
get_interface<PPB_VideoDecoder_0_2>()->Create(instance.pp_instance()));
} else if (has_interface<PPB_VideoDecoder_0_1>()) {
PassRefFromConstructor(
get_interface<PPB_VideoDecoder_0_1>()->Create(instance.pp_instance()));
}
}
VideoDecoder::VideoDecoder(const VideoDecoder& other) : Resource(other) {
}
int32_t VideoDecoder::Initialize(const Graphics3D& context,
PP_VideoProfile profile,
PP_HardwareAcceleration acceleration,
uint32_t min_picture_count,
const CompletionCallback& cc) {
if (has_interface<PPB_VideoDecoder_1_1>()) {
return get_interface<PPB_VideoDecoder_1_1>()->Initialize(
pp_resource(), context.pp_resource(), profile, acceleration,
min_picture_count, cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_1_0>()) {
if (min_picture_count != 0)
return cc.MayForce(PP_ERROR_NOTSUPPORTED);
return get_interface<PPB_VideoDecoder_1_0>()->Initialize(
pp_resource(), context.pp_resource(), profile, acceleration,
cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_2>()) {
if (min_picture_count != 0)
return cc.MayForce(PP_ERROR_NOTSUPPORTED);
return get_interface<PPB_VideoDecoder_0_2>()->Initialize(
pp_resource(), context.pp_resource(), profile, acceleration,
cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_1>()) {
if (min_picture_count != 0)
return cc.MayForce(PP_ERROR_NOTSUPPORTED);
if (acceleration == PP_HARDWAREACCELERATION_NONE)
return cc.MayForce(PP_ERROR_NOTSUPPORTED);
return get_interface<PPB_VideoDecoder_0_1>()->Initialize(
pp_resource(),
context.pp_resource(),
profile,
acceleration == PP_HARDWAREACCELERATION_WITHFALLBACK
? PP_TRUE
: PP_FALSE,
cc.pp_completion_callback());
}
return cc.MayForce(PP_ERROR_NOINTERFACE);
}
int32_t VideoDecoder::Decode(uint32_t decode_id,
uint32_t size,
const void* buffer,
const CompletionCallback& cc) {
if (has_interface<PPB_VideoDecoder_1_0>()) {
return get_interface<PPB_VideoDecoder_1_0>()->Decode(
pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_2>()) {
return get_interface<PPB_VideoDecoder_0_2>()->Decode(
pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_1>()) {
return get_interface<PPB_VideoDecoder_0_1>()->Decode(
pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
}
return cc.MayForce(PP_ERROR_NOINTERFACE);
}
int32_t VideoDecoder::GetPicture(
const CompletionCallbackWithOutput<PP_VideoPicture>& cc) {
if (has_interface<PPB_VideoDecoder_1_0>()) {
return get_interface<PPB_VideoDecoder_1_0>()->GetPicture(
pp_resource(), cc.output(), cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_2>()) {
// Data for our callback wrapper. The callback handler will delete it.
CallbackData_0_1* data = new CallbackData_0_1(cc);
return get_interface<PPB_VideoDecoder_0_2>()->GetPicture(
pp_resource(), &data->picture,
PP_MakeCompletionCallback(&CallbackConverter, data));
}
if (has_interface<PPB_VideoDecoder_0_1>()) {
// Data for our callback wrapper. The callback handler will delete it.
CallbackData_0_1* data = new CallbackData_0_1(cc);
return get_interface<PPB_VideoDecoder_0_1>()->GetPicture(
pp_resource(), &data->picture,
PP_MakeCompletionCallback(&CallbackConverter, data));
}
return cc.MayForce(PP_ERROR_NOINTERFACE);
}
void VideoDecoder::RecyclePicture(const PP_VideoPicture& picture) {
if (has_interface<PPB_VideoDecoder_1_0>()) {
get_interface<PPB_VideoDecoder_1_0>()->RecyclePicture(pp_resource(),
&picture);
} else if (has_interface<PPB_VideoDecoder_0_2>()) {
get_interface<PPB_VideoDecoder_0_2>()->RecyclePicture(pp_resource(),
&picture);
} else if (has_interface<PPB_VideoDecoder_0_1>()) {
get_interface<PPB_VideoDecoder_0_1>()->RecyclePicture(pp_resource(),
&picture);
}
}
int32_t VideoDecoder::Flush(const CompletionCallback& cc) {
if (has_interface<PPB_VideoDecoder_1_0>()) {
return get_interface<PPB_VideoDecoder_1_0>()->Flush(
pp_resource(), cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_2>()) {
return get_interface<PPB_VideoDecoder_0_2>()->Flush(
pp_resource(), cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_1>()) {
return get_interface<PPB_VideoDecoder_0_1>()->Flush(
pp_resource(), cc.pp_completion_callback());
}
return cc.MayForce(PP_ERROR_NOINTERFACE);
}
int32_t VideoDecoder::Reset(const CompletionCallback& cc) {
if (has_interface<PPB_VideoDecoder_1_0>()) {
return get_interface<PPB_VideoDecoder_1_0>()->Reset(
pp_resource(), cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_2>()) {
return get_interface<PPB_VideoDecoder_0_2>()->Reset(
pp_resource(), cc.pp_completion_callback());
}
if (has_interface<PPB_VideoDecoder_0_1>()) {
return get_interface<PPB_VideoDecoder_0_1>()->Reset(
pp_resource(), cc.pp_completion_callback());
}
return cc.MayForce(PP_ERROR_NOINTERFACE);
}
} // namespace pp