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avcodec/prores: adapt hwaccel code for slice-based accelerators

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In preparation for the Vulkan hwaccel.
The existing hwaccel code was designed around
videotoolbox, which ingests the whole frame
bitstream including picture headers.
This adapts the code to accomodate lower-level,
slice-based hwaccels.
This commit is contained in:
averne
2025-06-12 19:31:44 +02:00
committed by Lynne
parent 9195af77eb
commit 987368ef25
2 changed files with 30 additions and 20 deletions
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34
libavcodec/proresdec.c
View File

@@ -756,6 +756,7 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int frame_hdr_size, pic_size, ret;
int i;
if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
@@ -786,20 +787,6 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
ff_thread_finish_setup(avctx);
if (HWACCEL_MAX && avctx->hwaccel) {
const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
ret = hwaccel->start_frame(avctx, avpkt->buf, avpkt->data, avpkt->size);
if (ret < 0)
return ret;
ret = hwaccel->decode_slice(avctx, avpkt->data, avpkt->size);
if (ret < 0)
return ret;
ret = hwaccel->end_frame(avctx);
if (ret < 0)
return ret;
goto finish;
}
decode_picture:
pic_size = decode_picture_header(avctx, buf, buf_size);
if (pic_size < 0) {
@@ -807,7 +794,23 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
return pic_size;
}
if ((ret = decode_picture(avctx)) < 0) {
if (HWACCEL_MAX && avctx->hwaccel) {
const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
ret = hwaccel->start_frame(avctx, avpkt->buf, avpkt->data, avpkt->size);
if (ret < 0)
return ret;
for (i = 0; i < ctx->slice_count; ++i) {
ret = hwaccel->decode_slice(avctx, ctx->slices[i].data, ctx->slices[i].data_size);
if (ret < 0)
return ret;
}
ret = hwaccel->end_frame(avctx);
if (ret < 0)
return ret;
} else if ((ret = decode_picture(avctx)) < 0) {
av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
return ret;
}
@@ -820,7 +823,6 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
goto decode_picture;
}
finish:
av_refstruct_unref(&ctx->hwaccel_last_picture_private);
*got_frame = 1;

16
libavcodec/videotoolbox.c
View File

@@ -1161,16 +1161,21 @@ static int videotoolbox_prores_start_frame(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
return 0;
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
ProresContext *ctx = avctx->priv_data;
/* Videotoolbox decodes both fields simultaneously */
if (!ctx->first_field)
return 0;
return ff_videotoolbox_buffer_copy(vtctx, buffer, size);
}
static int videotoolbox_prores_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
return ff_videotoolbox_buffer_copy(vtctx, buffer, size);
return 0;
}
static int videotoolbox_prores_end_frame(AVCodecContext *avctx)
@@ -1178,6 +1183,9 @@ static int videotoolbox_prores_end_frame(AVCodecContext *avctx)
ProresContext *ctx = avctx->priv_data;
AVFrame *frame = ctx->frame;
if (!ctx->first_field)
return 0;
return ff_videotoolbox_common_end_frame(avctx, frame);
}