diff options
Diffstat (limited to 'decoder.h')
| -rw-r--r-- | decoder.h | 26 |
1 files changed, 20 insertions, 6 deletions
@@ -7,12 +7,29 @@ #include <string> +class Source { + public: + virtual std::streamsize read(char* buf, std::streamsize buf_size) = 0; +}; + +template<class T> +class StreamSource : public Source { + private: + T& s; + + public: + StreamSource(T& s_) : s(s_) {} + std::streamsize read(char* buf, std::streamsize buf_size) { + return boost::iostreams::read(s, buf, buf_size); + } +}; + class DecoderBase { public: typedef boost::shared_ptr<DecoderBase> p; - virtual size_t decode(const uint8_t *input, size_t input_size, uint8_t *output, size_t output_size) = 0; virtual ~DecoderBase() {} + virtual size_t decode(Source& input, uint8_t *output, size_t output_size) = 0; }; //! Input filter to hold a decoder in a filter chain. @@ -26,11 +43,8 @@ class DecoderFilter : public boost::iostreams::multichar_input_filter { template<typename Source> std::streamsize read(Source& src, char *s, std::streamsize n) { - char src_data[0x2000]; - std::streamsize src_read = boost::iostreams::read(src, src_data, 0x2000); - if(src_read < 0) - src_read = 0; - return decoder->decode((const uint8_t*)src_data, src_read, (uint8_t*)s, n); + StreamSource<Source> src_f(src); + return decoder->decode(src_f, (uint8_t*)s, n); } }; |