mirror of https://github.com/FFmpeg/FFmpeg.git
Mark Thompson
8 years ago
parent
d2e6dd32a4
commit
62a1ef9f26
4 changed files with 16 additions and 238 deletions
@ -1,231 +0,0 @@ |
||||
/*
|
||||
* This file is part of Libav. |
||||
* |
||||
* Libav is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU Lesser General Public |
||||
* License as published by the Free Software Foundation; either |
||||
* version 2.1 of the License, or (at your option) any later version. |
||||
* |
||||
* Libav is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||||
* Lesser General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU Lesser General Public |
||||
* License along with Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#include "config.h" |
||||
|
||||
#include "libavutil/avassert.h" |
||||
#include "libavutil/frame.h" |
||||
#include "libavutil/hwcontext.h" |
||||
#include "libavutil/log.h" |
||||
|
||||
#include "avconv.h" |
||||
|
||||
|
||||
static AVClass vaapi_class = { |
||||
.class_name = "vaapi", |
||||
.item_name = av_default_item_name, |
||||
.version = LIBAVUTIL_VERSION_INT, |
||||
}; |
||||
|
||||
#define DEFAULT_SURFACES 20 |
||||
|
||||
typedef struct VAAPIDecoderContext { |
||||
const AVClass *class; |
||||
|
||||
AVBufferRef *device_ref; |
||||
AVHWDeviceContext *device; |
||||
AVBufferRef *frames_ref; |
||||
AVHWFramesContext *frames; |
||||
|
||||
// The output need not have the same format, width and height as the
|
||||
// decoded frames - the copy for non-direct-mapped access is actually
|
||||
// a whole vpp instance which can do arbitrary scaling and format
|
||||
// conversion.
|
||||
enum AVPixelFormat output_format; |
||||
} VAAPIDecoderContext; |
||||
|
||||
|
||||
static int vaapi_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) |
||||
{ |
||||
InputStream *ist = avctx->opaque; |
||||
VAAPIDecoderContext *ctx = ist->hwaccel_ctx; |
||||
int err; |
||||
|
||||
err = av_hwframe_get_buffer(ctx->frames_ref, frame, 0); |
||||
if (err < 0) { |
||||
av_log(ctx, AV_LOG_ERROR, "Failed to allocate decoder surface.\n"); |
||||
} else { |
||||
av_log(ctx, AV_LOG_DEBUG, "Decoder given surface %#x.\n", |
||||
(unsigned int)(uintptr_t)frame->data[3]); |
||||
} |
||||
return err; |
||||
} |
||||
|
||||
static int vaapi_retrieve_data(AVCodecContext *avctx, AVFrame *input) |
||||
{ |
||||
InputStream *ist = avctx->opaque; |
||||
VAAPIDecoderContext *ctx = ist->hwaccel_ctx; |
||||
AVFrame *output = 0; |
||||
int err; |
||||
|
||||
av_assert0(input->format == AV_PIX_FMT_VAAPI); |
||||
|
||||
if (ctx->output_format == AV_PIX_FMT_VAAPI) { |
||||
// Nothing to do.
|
||||
return 0; |
||||
} |
||||
|
||||
av_log(ctx, AV_LOG_DEBUG, "Retrieve data from surface %#x.\n", |
||||
(unsigned int)(uintptr_t)input->data[3]); |
||||
|
||||
output = av_frame_alloc(); |
||||
if (!output) |
||||
return AVERROR(ENOMEM); |
||||
|
||||
output->format = ctx->output_format; |
||||
|
||||
err = av_hwframe_transfer_data(output, input, 0); |
||||
if (err < 0) { |
||||
av_log(ctx, AV_LOG_ERROR, "Failed to transfer data to " |
||||
"output frame: %d.\n", err); |
||||
goto fail; |
||||
} |
||||
|
||||
err = av_frame_copy_props(output, input); |
||||
if (err < 0) { |
||||
av_frame_unref(output); |
||||
goto fail; |
||||
} |
||||
|
||||
av_frame_unref(input); |
||||
av_frame_move_ref(input, output); |
||||
av_frame_free(&output); |
||||
|
||||
return 0; |
||||
|
||||
fail: |
||||
if (output) |
||||
av_frame_free(&output); |
||||
return err; |
||||
} |
||||
|
||||
static void vaapi_decode_uninit(AVCodecContext *avctx) |
||||
{ |
||||
InputStream *ist = avctx->opaque; |
||||
VAAPIDecoderContext *ctx = ist->hwaccel_ctx; |
||||
|
||||
if (ctx) { |
||||
av_buffer_unref(&ctx->frames_ref); |
||||
av_buffer_unref(&ctx->device_ref); |
||||
av_free(ctx); |
||||
} |
||||
|
||||
av_buffer_unref(&ist->hw_frames_ctx); |
||||
|
||||
ist->hwaccel_ctx = NULL; |
||||
ist->hwaccel_uninit = NULL; |
||||
ist->hwaccel_get_buffer = NULL; |
||||
ist->hwaccel_retrieve_data = NULL; |
||||
} |
||||
|
||||
int vaapi_decode_init(AVCodecContext *avctx) |
||||
{ |
||||
InputStream *ist = avctx->opaque; |
||||
VAAPIDecoderContext *ctx; |
||||
int err; |
||||
int loglevel = (ist->hwaccel_id != HWACCEL_VAAPI ? AV_LOG_VERBOSE |
||||
: AV_LOG_ERROR); |
||||
|
||||
if (ist->hwaccel_ctx) |
||||
vaapi_decode_uninit(avctx); |
||||
|
||||
// We have -hwaccel without -vaapi_device, so just initialise here with
|
||||
// the device passed as -hwaccel_device (if -vaapi_device was passed, it
|
||||
// will always have been called before now).
|
||||
if (!hw_device_ctx) { |
||||
err = vaapi_device_init(ist->hwaccel_device); |
||||
if (err < 0) |
||||
return err; |
||||
} |
||||
|
||||
ctx = av_mallocz(sizeof(*ctx)); |
||||
if (!ctx) |
||||
return AVERROR(ENOMEM); |
||||
ctx->class = &vaapi_class; |
||||
|
||||
ctx->device_ref = av_buffer_ref(hw_device_ctx); |
||||
ctx->device = (AVHWDeviceContext*)ctx->device_ref->data; |
||||
|
||||
ctx->output_format = ist->hwaccel_output_format; |
||||
avctx->pix_fmt = ctx->output_format; |
||||
|
||||
ctx->frames_ref = av_hwframe_ctx_alloc(ctx->device_ref); |
||||
if (!ctx->frames_ref) { |
||||
av_log(ctx, loglevel, "Failed to create VAAPI frame context.\n"); |
||||
err = AVERROR(ENOMEM); |
||||
goto fail; |
||||
} |
||||
|
||||
ctx->frames = (AVHWFramesContext*)ctx->frames_ref->data; |
||||
|
||||
ctx->frames->format = AV_PIX_FMT_VAAPI; |
||||
ctx->frames->width = avctx->coded_width; |
||||
ctx->frames->height = avctx->coded_height; |
||||
|
||||
// It would be nice if we could query the available formats here,
|
||||
// but unfortunately we don't have a VAConfigID to do it with.
|
||||
// For now, just assume an NV12 format (or P010 if 10-bit).
|
||||
ctx->frames->sw_format = (avctx->sw_pix_fmt == AV_PIX_FMT_YUV420P10 ? |
||||
AV_PIX_FMT_P010 : AV_PIX_FMT_NV12); |
||||
|
||||
// For frame-threaded decoding, at least one additional surface
|
||||
// is needed for each thread.
|
||||
ctx->frames->initial_pool_size = DEFAULT_SURFACES; |
||||
if (avctx->active_thread_type & FF_THREAD_FRAME) |
||||
ctx->frames->initial_pool_size += avctx->thread_count; |
||||
|
||||
err = av_hwframe_ctx_init(ctx->frames_ref); |
||||
if (err < 0) { |
||||
av_log(ctx, loglevel, "Failed to initialise VAAPI frame " |
||||
"context: %d\n", err); |
||||
goto fail; |
||||
} |
||||
|
||||
ist->hw_frames_ctx = av_buffer_ref(ctx->frames_ref); |
||||
if (!ist->hw_frames_ctx) { |
||||
err = AVERROR(ENOMEM); |
||||
goto fail; |
||||
} |
||||
|
||||
ist->hwaccel_ctx = ctx; |
||||
ist->hwaccel_uninit = &vaapi_decode_uninit; |
||||
ist->hwaccel_get_buffer = &vaapi_get_buffer; |
||||
ist->hwaccel_retrieve_data = &vaapi_retrieve_data; |
||||
|
||||
return 0; |
||||
|
||||
fail: |
||||
vaapi_decode_uninit(avctx); |
||||
return err; |
||||
} |
||||
|
||||
static AVClass *vaapi_log = &vaapi_class; |
||||
|
||||
av_cold int vaapi_device_init(const char *device) |
||||
{ |
||||
int err; |
||||
|
||||
err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, |
||||
device, NULL, 0); |
||||
if (err < 0) { |
||||
av_log(&vaapi_log, AV_LOG_ERROR, "Failed to create a VAAPI device\n"); |
||||
return err; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
Loading…
Reference in new issue