Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Shiyou Yin	62e6b634a8	avcodec/mips: [loongson] refine process of setting block as 0 in h264dsp_mmi. In function ff_h264_add_pixels4_8_mmi, there is no need to reset '%[ftmp0]' to 0, because it's value has never changed since the start of the asm block. This patch remove the redundant 'xor' and set src to zero once it was loaded. In function ff_h264_idct_add_8_mmi, 'block' is seted to zero twice. This patch removed the first setting zero operation and move the second one after the load operation of block. In function ff_h264_idct8_add_8_mmi, 'block' is seted to zero twice too. This patch just removed the second setting zero operation. This patch mainly simplifies the implementation of functions above, the effect on the performance of whole h264 decoding process is not obvious. According to the perf data, proportion of ff_h264_idct_add_8_mmi decreased from 0.29% to 0.26% and ff_h264_idct8_add_8_mmi decreased from 0.62% to 0.59% when decoding H264 format on loongson 3A3000(For reference only , not very stable.). Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	6 years ago
Shiyou Yin	93b35a0555	avcodec/mips: [loongson] optimize memset in h264dsp. Optimized memset with mmi in following functions: 1. ff_h264_add_pixels4_8_mmi. 2. ff_h264_idct_add_8_mmi. 3. ff_h264_idct8_add_8_mmi. This optimization improved h264 decoding performance about 1.3%(tested on loongson 3A3000). Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	6 years ago
Zhou Xiaoyong	89ec4adad6	avcodec/mips: loongson optimize mmi load and store operators 1.MMI_ load/store macros are defined in libavutil/mips/mmiutils.h 2.Replace some unnecessary unaligned access with aligned operator 3.The MMI_ load/store is compatible with cpu loongson2e/2f which not support instructions start with gs Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
Michael Niedermayer	bc26fe8927	avcodec/h264: Use ptrdiff_t for (bi)weight functions Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
ZhouXiaoyong	af3e944e7e	avcodec/mips/h264dsp_mmi: Version 2 of the optimizations for loongson mmi 1. no longer use the register names directly and optimized code format 2. to be compatible with O32, specify type of address variable with mips_reg and handle the address variable with PTR_ operator 3. optimize some unaligned loads and stores 4. use uld and mtc1 to workaround cpu 3A2000 gslwlc1 bug (gslwlc1 instruction extension bug in O32 ABI) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
周晓勇	f7e9b9d260	avcodec: loongson optimize h264dsp idct and loop filter with mmi Change-Id: Ic87fb8f5cd22a502ff9dbbc5a5a8ea97cfc8a1dd Signed-off-by: ZhouXiaoyong <zhouxiaoyong@loongson.cn> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
周晓勇	e89e23e1bc	avcodec: loongson3 optimized h264dsp weighted mc with mmi Signed-off-by: ZhouXiaoyong <zhouxiaoyong@loongson.cn> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago