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vsrc_movie: create media agnostic movie init and uninit routines

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Allow factorization for the pending work on the audio movie source.
This commit is contained in:
Stefano Sabatini 2011-08-18 12:36:39 +02:00
parent 8aa62bb950
commit 3e4666f34c
1 changed files with 49 additions and 41 deletions
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90
libavfilter/vsrc_movie.c
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@ -39,6 +39,7 @@
#include "avfilter.h"
typedef struct {
/* common A/V fields */
const AVClass *class;
int64_t seek_point; ///< seekpoint in microseconds
double seek_point_d;
@ -51,6 +52,7 @@ typedef struct {
int is_done;
AVFrame *frame; ///< video frame to store the decoded images in
/* video-only fields */
int w, h;
AVFilterBufferRef *picref;
} MovieContext;
@ -78,13 +80,31 @@ static const AVClass movie_class = {
movie_options
};
static int movie_init(AVFilterContext *ctx)
static av_cold int movie_common_init(AVFilterContext *ctx, const char *args, void *opaque,
enum AVMediaType type)
{
MovieContext *movie = ctx->priv;
AVInputFormat *iformat = NULL;
AVCodec *codec;
int ret;
int64_t timestamp;
int ret;
movie->class = &movie_class;
av_opt_set_defaults2(movie, 0, 0);
if (args)
movie->file_name = av_get_token(&args, ":");
if (!movie->file_name || !*movie->file_name) {
av_log(ctx, AV_LOG_ERROR, "No filename provided!\n");
return AVERROR(EINVAL);
}
if (*args++ == ':' && (ret = av_set_options_string(movie, args, "=", ":")) < 0) {
av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return ret;
}
movie->seek_point = movie->seek_point_d * 1000000 + 0.5;
av_register_all();
@ -120,11 +140,11 @@ static int movie_init(AVFilterContext *ctx)
}
}
/* select the video stream */
if ((ret = av_find_best_stream(movie->format_ctx, AVMEDIA_TYPE_VIDEO,
/* select the media stream */
if ((ret = av_find_best_stream(movie->format_ctx, type,
movie->stream_index, -1, NULL, 0)) < 0) {
av_log(ctx, AV_LOG_ERROR, "No video stream with index '%d' found\n",
movie->stream_index);
av_log(ctx, AV_LOG_ERROR, "No %s stream with index '%d' found\n",
av_get_media_type_string(type), movie->stream_index);
return ret;
}
movie->stream_index = ret;
@ -145,14 +165,6 @@ static int movie_init(AVFilterContext *ctx)
return ret;
}
if (!(movie->frame = avcodec_alloc_frame()) ) {
av_log(ctx, AV_LOG_ERROR, "Failed to alloc frame\n");
return AVERROR(ENOMEM);
}
movie->w = movie->codec_ctx->width;
movie->h = movie->codec_ctx->height;
av_log(ctx, AV_LOG_INFO, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n",
movie->seek_point, movie->format_name, movie->file_name,
movie->stream_index);
@ -160,31 +172,7 @@ static int movie_init(AVFilterContext *ctx)
return 0;
}
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
MovieContext *movie = ctx->priv;
int ret;
movie->class = &movie_class;
av_opt_set_defaults2(movie, 0, 0);
if (args)
movie->file_name = av_get_token(&args, ":");
if (!movie->file_name || !*movie->file_name) {
av_log(ctx, AV_LOG_ERROR, "No filename provided!\n");
return AVERROR(EINVAL);
}
if (*args++ == ':' && (ret = av_set_options_string(movie, args, "=", ":")) < 0) {
av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return ret;
}
movie->seek_point = movie->seek_point_d * 1000000 + 0.5;
return movie_init(ctx);
}
static av_cold void uninit(AVFilterContext *ctx)
static av_cold void movie_common_uninit(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
@ -194,10 +182,30 @@ static av_cold void uninit(AVFilterContext *ctx)
avcodec_close(movie->codec_ctx);
if (movie->format_ctx)
av_close_input_file(movie->format_ctx);
avfilter_unref_buffer(movie->picref);
av_freep(&movie->frame);
}
static av_cold int movie_init(AVFilterContext *ctx, const char *args, void *opaque)
{
MovieContext *movie = ctx->priv;
int ret;
if ((ret = movie_common_init(ctx, args, opaque, AVMEDIA_TYPE_VIDEO)) < 0)
return ret;
if (!(movie->frame = avcodec_alloc_frame()) ) {
av_log(ctx, AV_LOG_ERROR, "Failed to alloc frame\n");
return AVERROR(ENOMEM);
}
movie->w = movie->codec_ctx->width;
movie->h = movie->codec_ctx->height;
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
@ -298,8 +306,8 @@ AVFilter avfilter_vsrc_movie = {
.name = "movie",
.description = NULL_IF_CONFIG_SMALL("Read from a movie source."),
.priv_size = sizeof(MovieContext),
.init = init,
.uninit = uninit,
.init = movie_init,
.uninit = movie_common_uninit,
.query_formats = query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL }},