4 Commits

Author	SHA1	Message	Date
Mark Thompson	3a71bcc213	lavc: Mark all AVHWAccel structures as const	2017-11-26 21:41:19 +00:00
Philip Langdale	4c7b023d56	avcodec: Refactor common nvdec hwaccel logic ... The 'simple' hwaccels (not h.264 and hevc) all use the same bitstream management and reference lookup logic so let's refactor all that into common functions. I verified that casting a signed int -1 to unsigned char produces 255 according to the C language specification.	2017-11-20 07:03:26 -08:00
Philip Langdale	5a0f6b099f	avcodec: Fix reference data type for nvdec vc1 hwaccel ... I took the reference lookup code from the vp9 hwaccel where the type is unsigned char, but for vc1, the type is signed int. This is particularly important because the value used when there's no reference is different (255 vs -1). It didn't seem to break anything, but for mpeg1/2/4, this mistake caused decode errors.	2017-11-18 08:05:21 -08:00
Philip Langdale	912ceba61b	avcodec: Implement vc1 nvdec hwaccel ... This hwaccel is interesting because it also works for wmv3/9 content, which is not supported by the nvidia parser used by cuviddec.	2017-11-14 19:40:01 -08:00