Am 08.05.2018 um 17:49 schrieb wm4:
On Tue, 8 May 2018 17:43:49 +0200 Timo Rothenpieler <t...@rothenpieler.org> wrote:- frame->buf[0] = av_buffer_pool_get(ctx->pool); + if (frctx->flags & AV_CUDA_HWFRAMES_DUMMY_MODE) + frame->buf[0] = av_buffer_create(NULL, 0, NULL, NULL, 0); + else + frame->buf[0] = av_buffer_pool_get(ctx->pool); +Is this really needed? Because at least videotoolbox also lets the decoder allocate frames, and allocates the "dummy" buffers outside of the hwcontext. (I don't quite remember how it works.)You mean compared to just leaving buf[0] empty?No, compared to how the videotoolbox code does things.
videotoolbox seems to use an externally supplied AVHWFramesContext::pool.Which should be possible to do for cuda as well, i.e. a custom buffer pool that returns mostly empty data, so the new API would be unneeded. I'll have a look if it works out.
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