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https://github.com/mpv-player/mpv
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f1e78306cb
So talking to a certain Intel dev, it sounded like modern VA-API drivers are reasonable thread-safe. But apparently that is not the case. Not at all. So add approximate locking around all vaapi API calls. The problem appeared once we moved decoding and display to different threads. That means the "vaapi-copy" mode was unaffected, but decoding with vo_vaapi or vo_opengl lead to random crashes. Untested on real Intel hardware. With the vdpau emulation, it seems to work fine - but actually it worked fine even before this commit, because vdpau was written and designed not by morons, but competent people (vdpau is guaranteed to be fully thread-safe). There is some probability that this commit doesn't fix things entirely. One problem is that locking might not be complete. For one, libavcodec _also_ accesses vaapi, so we have to rely on our own guesses how and when lavc uses vaapi (since we disable multithreading when doing hw decoding, our guess should be relatively good, but it's still a lavc implementation detail). One other reason that this commit might not help is Intel's amazing potential to fuckup anything that is good and holy.
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
#ifndef MPV_VAAPI_H
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#define MPV_VAAPI_H
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#include <stdbool.h>
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#include <inttypes.h>
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#include <pthread.h>
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#include <va/va.h>
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#include <va/va_x11.h>
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/* Compatibility glue with VA-API >= 0.31 */
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#if defined VA_CHECK_VERSION
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#if VA_CHECK_VERSION(0,31,0)
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#define vaPutImage2 vaPutImage
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#define vaAssociateSubpicture2 vaAssociateSubpicture
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#endif
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#endif
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/* Compatibility glue with VA-API >= 0.34 */
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#if VA_CHECK_VERSION(0,34,0)
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#include <va/va_compat.h>
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#endif
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/* Compatibility glue with upstream libva */
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#ifndef VA_SDS_VERSION
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#define VA_SDS_VERSION 0
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#endif
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/* Compatibility glue with VA-API >= 0.30 */
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#ifndef VA_INVALID_ID
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#define VA_INVALID_ID 0xffffffff
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#endif
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#ifndef VA_FOURCC
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#define VA_FOURCC(ch0, ch1, ch2, ch3) \
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((uint32_t)(uint8_t)(ch0) | \
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((uint32_t)(uint8_t)(ch1) << 8) | \
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((uint32_t)(uint8_t)(ch2) << 16) | \
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((uint32_t)(uint8_t)(ch3) << 24 ))
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#endif
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#if defined VA_SRC_BT601 && defined VA_SRC_BT709
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# define USE_VAAPI_COLORSPACE 1
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#else
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# define USE_VAAPI_COLORSPACE 0
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#endif
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/* Compatibility glue with VA-API >= 0.31.1 */
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#ifndef VA_SRC_SMPTE_240
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#define VA_SRC_SMPTE_240 0x00000040
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#endif
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#if defined VA_FILTER_SCALING_MASK
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# define USE_VAAPI_SCALING 1
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#else
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# define USE_VAAPI_SCALING 0
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#endif
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#ifndef VA_FOURCC_YV12
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#define VA_FOURCC_YV12 0x32315659
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#endif
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#ifndef VA_FOURCC_IYUV
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#define VA_FOURCC_IYUV 0x56555949
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#endif
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#ifndef VA_FOURCC_I420
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#define VA_FOURCC_I420 VA_FOURCC('I', '4', '2', '0')
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#endif
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#ifndef VA_FOURCC_RGBX
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#define VA_FOURCC_RGBX 0x58424752
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#endif
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#ifndef VA_FOURCC_BGRX
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#define VA_FOURCC_BGRX 0x58524742
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#endif
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#define VA_STR_FOURCC(fcc) \
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(const char[]){(fcc), (fcc) >> 8u, (fcc) >> 16u, (fcc) >> 24u, 0}
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#include "mp_image.h"
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struct mp_image_pool;
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struct mp_log;
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struct mp_vaapi_ctx {
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struct mp_log *log;
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VADisplay display;
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struct va_image_formats *image_formats;
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pthread_mutex_t lock;
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};
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struct va_image_formats;
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bool check_va_status(struct mp_log *log, VAStatus status, const char *msg);
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#define CHECK_VA_STATUS(ctx, msg) check_va_status((ctx)->log, status, msg)
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#define va_lock(ctx) pthread_mutex_lock(&(ctx)->lock)
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#define va_unlock(ctx) pthread_mutex_unlock(&(ctx)->lock)
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int va_get_colorspace_flag(enum mp_csp csp);
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struct mp_vaapi_ctx *va_initialize(VADisplay *display, struct mp_log *log);
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void va_destroy(struct mp_vaapi_ctx *ctx);
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enum mp_imgfmt va_fourcc_to_imgfmt(uint32_t fourcc);
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uint32_t va_fourcc_from_imgfmt(int imgfmt);
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VAImageFormat * va_image_format_from_imgfmt(const struct va_image_formats *formats, int imgfmt);
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bool va_image_map(struct mp_vaapi_ctx *ctx, VAImage *image, struct mp_image *mpi);
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bool va_image_unmap(struct mp_vaapi_ctx *ctx, VAImage *image);
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void va_pool_set_allocator(struct mp_image_pool *pool, struct mp_vaapi_ctx *ctx,
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int rt_format);
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VASurfaceID va_surface_id(struct mp_image *mpi);
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int va_surface_rt_format(struct mp_image *mpi);
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struct mp_image *va_surface_download(struct mp_image *src,
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struct mp_image_pool *pool);
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int va_surface_alloc_imgfmt(struct mp_image *img, int imgfmt);
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int va_surface_upload(struct mp_image *va_dst, struct mp_image *sw_src);
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bool va_guess_if_emulated(struct mp_vaapi_ctx *ctx);
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#endif
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