79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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#ifndef _mpeg4_avc_h_
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#define _mpeg4_avc_h_
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#include <stdint.h>
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#include <stddef.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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struct mpeg4_avc_t
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{
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// uint8_t version; // 1-only
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uint8_t profile;
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uint8_t compatibility; // constraint_set[0-5]_flag
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uint8_t level;
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uint8_t nalu; // NALUnitLength = (lengthSizeMinusOne + 1), default 4(0x03+1)
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uint8_t nb_sps;
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uint8_t nb_pps;
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struct mpeg4_avc_sps_t
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{
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uint16_t bytes;
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uint8_t* data;
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} sps[32]; // [0-31]
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struct mpeg4_avc_pps_t
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{
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uint16_t bytes;
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uint8_t* data;
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} pps[256];
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// extension
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uint8_t chroma_format_idc;
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uint8_t bit_depth_luma_minus8;
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uint8_t bit_depth_chroma_minus8;
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uint8_t data[4 * 1024];
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size_t off;
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};
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// load avc from AVCDecoderConfigurationRecord
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/// @return <=0-error, >0-output bytes
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int mpeg4_avc_decoder_configuration_record_load(const uint8_t* data, size_t bytes, struct mpeg4_avc_t* avc);
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/// @return <=0-error, >0-output bytes
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int mpeg4_avc_decoder_configuration_record_save(const struct mpeg4_avc_t* avc, uint8_t* data, size_t bytes);
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// load avc from annex-b bitstream
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int mpeg4_avc_from_nalu(const uint8_t* data, size_t bytes, struct mpeg4_avc_t* avc);
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int mpeg4_avc_to_nalu(const struct mpeg4_avc_t* avc, uint8_t* data, size_t bytes);
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int mpeg4_avc_codecs(const struct mpeg4_avc_t* avc, char* codecs, size_t bytes);
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/// @param[out] vcl 0-non VCL, 1-IDR, 2-P/B
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/// @return <=0-error, >0-output bytes
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int h264_annexbtomp4(struct mpeg4_avc_t* avc, const void* data, size_t bytes, void* out, size_t size, int* vcl, int* update);
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/// @return <=0-error, >0-output bytes
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int h264_mp4toannexb(const struct mpeg4_avc_t* avc, const void* data, size_t bytes, void* out, size_t size);
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/// h264_is_new_access_unit H.264 new access unit(frame)
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/// @return 1-new access, 0-not a new access
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int h264_is_new_access_unit(const uint8_t* nalu, size_t bytes);
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/// H.264 nal unit split
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int mpeg4_h264_annexb_nalu(const void* h264, size_t bytes, void (*handler)(void* param, const uint8_t* nalu, size_t bytes), void* param);
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/// Detect H.264 bitstrem type: H.264 Annexb or MP4-AVCC
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/// @return 0-annexb, >0-avcc length, <0-error
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int mpeg4_h264_bitstream_format(const uint8_t* h264, size_t bytes);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* !_mpeg4_avc_h_ */
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