[FFmpeg-cvslog] vaapi_encode: Refactor encode misc parameter buffer creation
Mark Thompson
git at videolan.org
Mon Jun 3 23:18:07 EEST 2019
ffmpeg | branch: master | Mark Thompson <sw at jkqxz.net> | Mon May 6 16:21:29 2019 +0100| [2880a32c668023bfee4745095c885450d547ae45] | committer: Mark Thompson
vaapi_encode: Refactor encode misc parameter buffer creation
This removes the use of the nonstandard combined structures, which
generated some warnings with clang and will cause alignment problems
with some parameter buffer types.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2880a32c668023bfee4745095c885450d547ae45
---
libavcodec/vaapi_encode.c | 72 ++++++++++++++++++++++++++++++------------
libavcodec/vaapi_encode.h | 23 ++++----------
libavcodec/vaapi_encode_h264.c | 8 ++---
3 files changed, 61 insertions(+), 42 deletions(-)
diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
index eda8b1307d..dd2a24de04 100644
--- a/libavcodec/vaapi_encode.c
+++ b/libavcodec/vaapi_encode.c
@@ -103,6 +103,29 @@ static int vaapi_encode_make_param_buffer(AVCodecContext *avctx,
return 0;
}
+static int vaapi_encode_make_misc_param_buffer(AVCodecContext *avctx,
+ VAAPIEncodePicture *pic,
+ int type,
+ const void *data, size_t len)
+{
+ // Construct the buffer on the stack - 1KB is much larger than any
+ // current misc parameter buffer type (the largest is EncQuality at
+ // 224 bytes).
+ uint8_t buffer[1024];
+ VAEncMiscParameterBuffer header = {
+ .type = type,
+ };
+ size_t buffer_size = sizeof(header) + len;
+ av_assert0(buffer_size <= sizeof(buffer));
+
+ memcpy(buffer, &header, sizeof(header));
+ memcpy(buffer + sizeof(header), data, len);
+
+ return vaapi_encode_make_param_buffer(avctx, pic,
+ VAEncMiscParameterBufferType,
+ buffer, buffer_size);
+}
+
static int vaapi_encode_wait(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
@@ -212,10 +235,10 @@ static int vaapi_encode_issue(AVCodecContext *avctx,
if (pic->type == PICTURE_TYPE_IDR) {
for (i = 0; i < ctx->nb_global_params; i++) {
- err = vaapi_encode_make_param_buffer(avctx, pic,
- VAEncMiscParameterBufferType,
- (char*)ctx->global_params[i],
- ctx->global_params_size[i]);
+ err = vaapi_encode_make_misc_param_buffer(avctx, pic,
+ ctx->global_params_type[i],
+ ctx->global_params[i],
+ ctx->global_params_size[i]);
if (err < 0)
goto fail;
}
@@ -1047,14 +1070,15 @@ int ff_vaapi_encode_receive_packet(AVCodecContext *avctx, AVPacket *pkt)
return 0;
}
-static av_cold void vaapi_encode_add_global_param(AVCodecContext *avctx,
- VAEncMiscParameterBuffer *buffer,
- size_t size)
+
+static av_cold void vaapi_encode_add_global_param(AVCodecContext *avctx, int type,
+ void *buffer, size_t size)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
av_assert0(ctx->nb_global_params < MAX_GLOBAL_PARAMS);
+ ctx->global_params_type[ctx->nb_global_params] = type;
ctx->global_params [ctx->nb_global_params] = buffer;
ctx->global_params_size[ctx->nb_global_params] = size;
@@ -1588,8 +1612,7 @@ rc_mode_found:
rc_bits_per_second, rc_window_size);
}
- ctx->rc_params.misc.type = VAEncMiscParameterTypeRateControl;
- ctx->rc_params.rc = (VAEncMiscParameterRateControl) {
+ ctx->rc_params = (VAEncMiscParameterRateControl) {
.bits_per_second = rc_bits_per_second,
.target_percentage = rc_target_percentage,
.window_size = rc_window_size,
@@ -1604,7 +1627,9 @@ rc_mode_found:
.quality_factor = rc_quality,
#endif
};
- vaapi_encode_add_global_param(avctx, &ctx->rc_params.misc,
+ vaapi_encode_add_global_param(avctx,
+ VAEncMiscParameterTypeRateControl,
+ &ctx->rc_params,
sizeof(ctx->rc_params));
}
@@ -1613,12 +1638,13 @@ rc_mode_found:
"initial fullness %"PRId64" bits.\n",
hrd_buffer_size, hrd_initial_buffer_fullness);
- ctx->hrd_params.misc.type = VAEncMiscParameterTypeHRD;
- ctx->hrd_params.hrd = (VAEncMiscParameterHRD) {
+ ctx->hrd_params = (VAEncMiscParameterHRD) {
.initial_buffer_fullness = hrd_initial_buffer_fullness,
.buffer_size = hrd_buffer_size,
};
- vaapi_encode_add_global_param(avctx, &ctx->hrd_params.misc,
+ vaapi_encode_add_global_param(avctx,
+ VAEncMiscParameterTypeHRD,
+ &ctx->hrd_params,
sizeof(ctx->hrd_params));
}
@@ -1632,11 +1658,13 @@ rc_mode_found:
av_log(avctx, AV_LOG_VERBOSE, "RC framerate: %d/%d (%.2f fps).\n",
fr_num, fr_den, (double)fr_num / fr_den);
- ctx->fr_params.misc.type = VAEncMiscParameterTypeFrameRate;
- ctx->fr_params.fr.framerate = (unsigned int)fr_den << 16 | fr_num;
-
+ ctx->fr_params = (VAEncMiscParameterFrameRate) {
+ .framerate = (unsigned int)fr_den << 16 | fr_num,
+ };
#if VA_CHECK_VERSION(0, 40, 0)
- vaapi_encode_add_global_param(avctx, &ctx->fr_params.misc,
+ vaapi_encode_add_global_param(avctx,
+ VAEncMiscParameterTypeFrameRate,
+ &ctx->fr_params,
sizeof(ctx->fr_params));
#endif
@@ -1898,10 +1926,12 @@ static av_cold int vaapi_encode_init_quality(AVCodecContext *avctx)
quality = attr.value;
}
- ctx->quality_params.misc.type = VAEncMiscParameterTypeQualityLevel;
- ctx->quality_params.quality.quality_level = quality;
-
- vaapi_encode_add_global_param(avctx, &ctx->quality_params.misc,
+ ctx->quality_params = (VAEncMiscParameterBufferQualityLevel) {
+ .quality_level = quality,
+ };
+ vaapi_encode_add_global_param(avctx,
+ VAEncMiscParameterTypeQualityLevel,
+ &ctx->quality_params,
sizeof(ctx->quality_params));
}
#else
diff --git a/libavcodec/vaapi_encode.h b/libavcodec/vaapi_encode.h
index 945660641a..eeec06036b 100644
--- a/libavcodec/vaapi_encode.h
+++ b/libavcodec/vaapi_encode.h
@@ -244,28 +244,17 @@ typedef struct VAAPIEncodeContext {
// Global parameters which will be applied at the start of the
// sequence (includes rate control parameters below).
- VAEncMiscParameterBuffer *global_params[MAX_GLOBAL_PARAMS];
+ int global_params_type[MAX_GLOBAL_PARAMS];
+ const void *global_params [MAX_GLOBAL_PARAMS];
size_t global_params_size[MAX_GLOBAL_PARAMS];
int nb_global_params;
// Rate control parameters.
- struct {
- VAEncMiscParameterBuffer misc;
- VAEncMiscParameterRateControl rc;
- } rc_params;
- struct {
- VAEncMiscParameterBuffer misc;
- VAEncMiscParameterHRD hrd;
- } hrd_params;
- struct {
- VAEncMiscParameterBuffer misc;
- VAEncMiscParameterFrameRate fr;
- } fr_params;
+ VAEncMiscParameterRateControl rc_params;
+ VAEncMiscParameterHRD hrd_params;
+ VAEncMiscParameterFrameRate fr_params;
#if VA_CHECK_VERSION(0, 36, 0)
- struct {
- VAEncMiscParameterBuffer misc;
- VAEncMiscParameterBufferQualityLevel quality;
- } quality_params;
+ VAEncMiscParameterBufferQualityLevel quality_params;
#endif
// Per-sequence parameter structure (VAEncSequenceParameterBuffer*).
diff --git a/libavcodec/vaapi_encode_h264.c b/libavcodec/vaapi_encode_h264.c
index 4cf99d7c78..d1427112ea 100644
--- a/libavcodec/vaapi_encode_h264.c
+++ b/libavcodec/vaapi_encode_h264.c
@@ -471,9 +471,9 @@ static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
(ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;
hrd->cpb_size_scale =
- av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
+ av_clip_uintp2(av_log2(ctx->hrd_params.buffer_size) - 15 - 4, 4);
hrd->cpb_size_value_minus1[0] =
- (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
+ (ctx->hrd_params.buffer_size >> hrd->cpb_size_scale + 4) - 1;
// CBR mode as defined for the HRD cannot be achieved without filler
// data, so this flag cannot be set even with VAAPI CBR modes.
@@ -488,8 +488,8 @@ static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
// This calculation can easily overflow 32 bits.
bp->nal.initial_cpb_removal_delay[0] = 90000 *
- (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
- ctx->hrd_params.hrd.buffer_size;
+ (uint64_t)ctx->hrd_params.initial_buffer_fullness /
+ ctx->hrd_params.buffer_size;
bp->nal.initial_cpb_removal_delay_offset[0] = 0;
} else {
sps->vui.nal_hrd_parameters_present_flag = 0;
More information about the ffmpeg-cvslog
mailing list