[FFmpeg-devel] [PATCH] avcodec/libx265: use x265 Multi-library Interface to query the API
Gopu Govindaswamy
gopu at multicorewareinc.com
Wed May 6 09:37:43 CEST 2015
>From 24fc78ebee006693f235ea2fd07994f7829b367e Mon Sep 17 00:00:00 2001
From: Gopu Govindaswamy <gopu at multicorewareinc.com>
Date: Wed, 6 May 2015 12:47:21 +0530
Subject: [PATCH] avcodec/libx265: use x265 Multi-library Interface to query
the API
ffmpeg can now use the x265 multi-library interface to make a runtime
selection between a number of libx265 libraries (perhaps 8bpp and 16bpp).
ffmpeg will link to one build of libx265 (statically or
dynamically) and this linked version of libx265 will support one
bit-depth (8 or 10 bits). At runtime, ffmpeg now has the option to request
the
encoder to use a different bit depth(8 or 10). If the requested bitdepth
is zero, or if it matches the bitdepth of the system default libx265 (the
currently linked library), then this library will be used for encode.
If ffmpeg requests a different bit-depth, the linked libx265 will attempt
to dynamically bind a shared library with the requested bit-depth from the
install
location (default or user-specified).
new x265 API:
const x265_api* api = x265_api_get(int bitDepth);
x265_api - holds the libx265 public API functions
bitDepth - requested API for 8bpp or 16bpp
note: Use 0 to indicate native bit depth of the linked libx265 and
x265_api_get(0) is guaranteed to return a non-null pointer
---
configure | 4 ++--
libavcodec/libx265.c | 32 +++++++++++++++++++++-----------
2 files changed, 23 insertions(+), 13 deletions(-)
diff --git a/configure b/configure
index d3f23c8..7c5d13a 100755
--- a/configure
+++ b/configure
@@ -5111,8 +5111,8 @@ enabled libx264 && { use_pkg_config x264
"stdint.h x264.h" x264_encode
{ check_cpp_condition x264.h "X264_BUILD >=
118" ||
die "ERROR: libx264 must be installed and
version must be >= 0.118."; }
enabled libx265 && require_pkg_config x265 x265.h
x265_encoder_encode &&
- { check_cpp_condition x265.h "X265_BUILD >=
17" ||
- die "ERROR: libx265 version must be >=
17."; }
+ { check_cpp_condition x265.h "X265_BUILD >=
56" ||
+ die "ERROR: libx265 version must be >=
56."; }
enabled libxavs && require libxavs xavs.h xavs_encoder_encode
-lxavs
enabled libxvid && require libxvid xvid.h xvid_global -lxvidcore
enabled libzmq && require_pkg_config libzmq zmq.h zmq_ctx_new
diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index 8924657..c055c76 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -39,6 +39,7 @@ typedef struct libx265Context {
x265_encoder *encoder;
x265_param *params;
+ const x265_api *api;
float crf;
char *preset;
@@ -67,10 +68,10 @@ static av_cold int libx265_encode_close(AVCodecContext
*avctx)
av_frame_free(&avctx->coded_frame);
- x265_param_free(ctx->params);
+ ctx->api->param_free(ctx->params);
if (ctx->encoder)
- x265_encoder_close(ctx->encoder);
+ ctx->api->encoder_close(ctx->encoder);
return 0;
}
@@ -79,6 +80,15 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
{
libx265Context *ctx = avctx->priv_data;
+ ctx->api =
x265_api_get(av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1);
+ if (!ctx->api)
+ ctx->api = x265_api_get(0);
+
+ if (!ctx->api) {
+ av_log(avctx, AV_LOG_ERROR, "Could not get x265 API.\n");
+ return AVERROR_EXTERNAL;
+ }
+
if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL &&
!av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w) {
av_log(avctx, AV_LOG_ERROR,
@@ -93,13 +103,13 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
return AVERROR(ENOMEM);
}
- ctx->params = x265_param_alloc();
+ ctx->params = ctx->api->param_alloc();
if (!ctx->params) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param
structure.\n");
return AVERROR(ENOMEM);
}
- if (x265_param_default_preset(ctx->params, ctx->preset, ctx->tune) <
0) {
+ if (ctx->api->param_default_preset(ctx->params, ctx->preset,
ctx->tune) < 0) {
int i;
av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n",
ctx->preset, ctx->tune);
@@ -148,7 +158,7 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den, 65535);
snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den);
- if (x265_param_parse(ctx->params, "sar", sar) ==
X265_PARAM_BAD_VALUE) {
+ if (ctx->api->param_parse(ctx->params, "sar", sar) ==
X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num,
sar_den);
return AVERROR_INVALIDDATA;
}
@@ -173,7 +183,7 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
char crf[6];
snprintf(crf, sizeof(crf), "%2.2f", ctx->crf);
- if (x265_param_parse(ctx->params, "crf", crf) ==
X265_PARAM_BAD_VALUE) {
+ if (ctx->api->param_parse(ctx->params, "crf", crf) ==
X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid crf: %2.2f.\n", ctx->crf);
return AVERROR(EINVAL);
}
@@ -191,7 +201,7 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) {
while ((en = av_dict_get(dict, "", en,
AV_DICT_IGNORE_SUFFIX))) {
- int parse_ret = x265_param_parse(ctx->params, en->key,
en->value);
+ int parse_ret = ctx->api->param_parse(ctx->params,
en->key, en->value);
switch (parse_ret) {
case X265_PARAM_BAD_NAME:
@@ -210,7 +220,7 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
}
}
- ctx->encoder = x265_encoder_open(ctx->params);
+ ctx->encoder = ctx->api->encoder_open(ctx->params);
if (!ctx->encoder) {
av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n");
libx265_encode_close(avctx);
@@ -221,7 +231,7 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
x265_nal *nal;
int nnal;
- avctx->extradata_size = x265_encoder_headers(ctx->encoder, &nal,
&nnal);
+ avctx->extradata_size = ctx->api->encoder_headers(ctx->encoder,
&nal, &nnal);
if (avctx->extradata_size <= 0) {
av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n");
libx265_encode_close(avctx);
@@ -255,7 +265,7 @@ static int libx265_encode_frame(AVCodecContext *avctx,
AVPacket *pkt,
int ret;
int i;
- x265_picture_init(ctx->params, &x265pic);
+ ctx->api->picture_init(ctx->params, &x265pic);
if (pic) {
for (i = 0; i < 3; i++) {
@@ -272,7 +282,7 @@ static int libx265_encode_frame(AVCodecContext *avctx,
AVPacket *pkt,
X265_TYPE_AUTO;
}
- ret = x265_encoder_encode(ctx->encoder, &nal, &nnal,
+ ret = ctx->api->encoder_encode(ctx->encoder, &nal, &nnal,
pic ? &x265pic : NULL, &x265pic_out);
if (ret < 0)
return AVERROR_EXTERNAL;
--
1.9.5.msysgit.1
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