[FFmpeg-devel] [PATCH v2 2/2] libavcodec/mediacodec: use AVMediaCodecDeviceContext hw_device_ctx if set

[Matthieu Bouron]

On Sun, Dec 03, 2017 at 05:32:22PM -0800, Aman Gupta wrote:
> From: Aman Gupta <aman at tmm1.net>
> 
> ---
>  libavcodec/mediacodecdec.c        |  2 +-
>  libavcodec/mediacodecdec_common.c | 14 +++++++++++++-
>  2 files changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/libavcodec/mediacodecdec.c b/libavcodec/mediacodecdec.c
> index 39f5cbc045..eabf6d0648 100644
> --- a/libavcodec/mediacodecdec.c
> +++ b/libavcodec/mediacodecdec.c
> @@ -520,7 +520,7 @@ static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = {
>      &(const AVCodecHWConfigInternal) {
>          .public          = {
>              .pix_fmt     = AV_PIX_FMT_MEDIACODEC,
> -            .methods     = AV_CODEC_HW_CONFIG_METHOD_AD_HOC,
> +            .methods     = AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX,
>              .device_type = AV_HWDEVICE_TYPE_NONE,
>          },
>          .hwaccel         = NULL,
> diff --git a/libavcodec/mediacodecdec_common.c b/libavcodec/mediacodecdec_common.c
> index cb2f6ae5e5..a9147f3a08 100644
> --- a/libavcodec/mediacodecdec_common.c
> +++ b/libavcodec/mediacodecdec_common.c
> @@ -24,6 +24,7 @@
>  #include <sys/types.h>
>  
>  #include "libavutil/common.h"
> +#include "libavutil/hwcontext_mediacodec.h"
>  #include "libavutil/mem.h"
>  #include "libavutil/log.h"
>  #include "libavutil/pixfmt.h"
> @@ -476,7 +477,18 @@ int ff_mediacodec_dec_init(AVCodecContext *avctx, MediaCodecDecContext *s,
>      if (pix_fmt == AV_PIX_FMT_MEDIACODEC) {
>          AVMediaCodecContext *user_ctx = avctx->hwaccel_context;
>  
> -        if (user_ctx && user_ctx->surface) {
> +        if (avctx->hw_device_ctx) {
> +            AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)(avctx->hw_device_ctx->data);
> +            if (device_ctx->type == AV_HWDEVICE_TYPE_MEDIACODEC) {
> +                if (device_ctx->hwctx) {
> +                    AVMediaCodecDeviceContext *mediacodec_ctx = (AVMediaCodecDeviceContext *)device_ctx->hwctx;
> +                    s->surface = ff_mediacodec_surface_ref(mediacodec_ctx->surface, avctx);
> +                    av_log(avctx, AV_LOG_INFO, "Using surface %p\n", s->surface);
> +                }
> +            }
> +        }
> +
> +        if (!s->surface && user_ctx && user_ctx->surface) {
>              s->surface = ff_mediacodec_surface_ref(user_ctx->surface, avctx);
>              av_log(avctx, AV_LOG_INFO, "Using surface %p\n", s->surface);
>          }

[...]

New patch attached fixing errors in get_format() by keeping the original
AVCodecHWConfigInternal (ad-hoc) and adding a new one (hw-device) with the
device_type field set to the MediaCodec.

The updated patchset works without errors with both the old hwaccel method and
the new device_ctx method.

I'll push the patchset in 3 days if there is no objection.

Regards,

-- 
Matthieu B.