[FFmpeg-cvslog] lavc: introduce avcodec_open2() as a replacement for avcodec_open().
Anton Khirnov
git at videolan.org
Sun Nov 20 03:39:54 CET 2011
ffmpeg | branch: release/0.8 | Anton Khirnov <anton at khirnov.net> | Sun May 22 14:10:49 2011 +0200| [47953c33ea8dc3b5da1903b0c5055043b82db3e7] | committer: Anton Khirnov
lavc: introduce avcodec_open2() as a replacement for avcodec_open().
Adds support for decoder-private options and makes setting other options
simpler.
(cherry picked from commit 0b950fe240936fa48fd41204bcfd04f35bbf39c3)
Conflicts:
libavcodec/avcodec.h
Signed-off-by: Anton Khirnov <anton at khirnov.net>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=47953c33ea8dc3b5da1903b0c5055043b82db3e7
---
ffprobe.c | 2 +-
ffserver.c | 2 +-
libavcodec/avcodec.h | 39 +++++++++++++++++++++++++++++++++++++++
libavcodec/mpegvideo_enc.c | 2 +-
libavcodec/utils.c | 24 +++++++++++++++++++++++-
libavcodec/version.h | 3 +++
libavfilter/vsrc_movie.c | 2 +-
7 files changed, 69 insertions(+), 5 deletions(-)
diff --git a/ffprobe.c b/ffprobe.c
index edda454..cb4a4c3 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -291,7 +291,7 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
stream->codec->codec_id, stream->index);
- } else if (avcodec_open(stream->codec, codec) < 0) {
+ } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
fprintf(stderr, "Error while opening codec for input stream %d\n",
stream->index);
}
diff --git a/ffserver.c b/ffserver.c
index 65a97b2..179cac4 100644
--- a/ffserver.c
+++ b/ffserver.c
@@ -2116,7 +2116,7 @@ static void open_parser(AVFormatContext *s, int i)
codec = avcodec_find_decoder(st->codec->codec_id);
if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
st->codec->parse_only = 1;
- if (avcodec_open(st->codec, codec) < 0)
+ if (avcodec_open2(st->codec, codec, NULL) < 0)
st->codec->parse_only = 0;
}
}
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 0269892..2dbdc86 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -30,6 +30,7 @@
#include "libavutil/samplefmt.h"
#include "libavutil/avutil.h"
#include "libavutil/cpu.h"
+#include "libavutil/dict.h"
#include "libavcodec/version.h"
@@ -3615,6 +3616,7 @@ int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, v
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
//FIXME func typedef
+#if FF_API_AVCODEC_OPEN
/**
* Initialize the AVCodecContext to use the given AVCodec. Prior to using this
* function the context has to be allocated.
@@ -3641,8 +3643,45 @@ int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2,
* @param codec The codec to use within the context.
* @return zero on success, a negative value on error
* @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder, avcodec_close
+ *
+ * @deprecated use avcodec_open2
*/
+attribute_deprecated
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
+#endif
+
+/**
+ * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
+ * function the context has to be allocated with avcodec_alloc_context().
+ *
+ * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
+ * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
+ * retrieving a codec.
+ *
+ * @warning This function is not thread safe!
+ *
+ * @code
+ * avcodec_register_all();
+ * av_dict_set(&opts, "b", "2.5M", 0);
+ * codec = avcodec_find_decoder(CODEC_ID_H264);
+ * if (!codec)
+ * exit(1);
+ *
+ * context = avcodec_alloc_context();
+ *
+ * if (avcodec_open(context, codec, opts) < 0)
+ * exit(1);
+ * @endcode
+ *
+ * @param avctx The context to initialize.
+ * @param options A dictionary filled with AVCodecContext and codec-private options.
+ * On return this object will be filled with options that were not found.
+ *
+ * @return zero on success, a negative value on error
+ * @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(),
+ * av_dict_set(), av_opt_find().
+ */
+int avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options);
/**
* Decode the audio frame of size avpkt->size from avpkt->data into samples.
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index b5a1872..51713a2 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -972,7 +972,7 @@ static int estimate_best_b_count(MpegEncContext *s){
c->time_base= s->avctx->time_base;
c->max_b_frames= s->max_b_frames;
- if (avcodec_open(c, codec) < 0)
+ if (avcodec_open2(c, codec, NULL) < 0)
return -1;
for(i=0; i<s->max_b_frames+2; i++){
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index bbed726..b264fe4 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -32,6 +32,7 @@
#include "libavutil/audioconvert.h"
#include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
+#include "libavutil/dict.h"
#include "avcodec.h"
#include "dsputil.h"
#include "libavutil/opt.h"
@@ -467,9 +468,20 @@ AVFrame *avcodec_alloc_frame(void){
return pic;
}
+#if FF_API_AVCODEC_OPEN
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
{
+ return avcodec_open2(avctx, codec, NULL);
+}
+#endif
+
+int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
+{
int ret = 0;
+ AVDictionary *tmp = NULL;
+
+ if (options)
+ av_dict_copy(&tmp, *options, 0);
/* If there is a user-supplied mutex locking routine, call it. */
if (ff_lockmgr_cb) {
@@ -496,14 +508,18 @@ int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
ret = AVERROR(ENOMEM);
goto end;
}
- if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
+ if (codec->priv_class) {
*(AVClass**)avctx->priv_data= codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
+ if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp) < 0))
+ goto free_and_end;
} else {
avctx->priv_data = NULL;
}
+ if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
+ goto free_and_end;
if(avctx->coded_width && avctx->coded_height)
avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
@@ -615,8 +631,14 @@ end:
if (ff_lockmgr_cb) {
(*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
}
+ if (options) {
+ av_dict_free(options);
+ *options = tmp;
+ }
+
return ret;
free_and_end:
+ av_dict_free(&tmp);
av_freep(&avctx->priv_data);
avctx->codec= NULL;
goto end;
diff --git a/libavcodec/version.h b/libavcodec/version.h
index aded68e..f4a0ecd 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -68,5 +68,8 @@
#ifndef FF_API_GET_PIX_FMT_NAME
#define FF_API_GET_PIX_FMT_NAME (LIBAVCODEC_VERSION_MAJOR < 54)
#endif
+#ifndef FF_API_AVCODEC_OPEN
+#define FF_API_AVCODEC_OPEN (LIBAVCODEC_VERSION_MAJOR < 54)
+#endif
#endif /* AVCODEC_VERSION_H */
diff --git a/libavfilter/vsrc_movie.c b/libavfilter/vsrc_movie.c
index 7556fa2..bd74f95 100644
--- a/libavfilter/vsrc_movie.c
+++ b/libavfilter/vsrc_movie.c
@@ -139,7 +139,7 @@ static int movie_init(AVFilterContext *ctx)
return AVERROR(EINVAL);
}
- if ((ret = avcodec_open(movie->codec_ctx, codec)) < 0) {
+ if ((ret = avcodec_open2(movie->codec_ctx, codec, NULL)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
return ret;
}
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