/*
- * ffmpeg main
* Copyright (c) 2000-2003 Fabrice Bellard
*
* This file is part of FFmpeg.
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+/**
+ * @file
+ * multimedia converter based on the FFmpeg libraries
+ */
+
#include "config.h"
#include <ctype.h>
#include <string.h>
#include "libavutil/pixdesc.h"
#include "libavutil/avstring.h"
#include "libavutil/libm.h"
+#include "libavutil/imgutils.h"
#include "libavformat/os_support.h"
#include "libswresample/swresample.h"
# include "libavfilter/avfilter.h"
# include "libavfilter/avfiltergraph.h"
# include "libavfilter/buffersink.h"
+# include "libavfilter/buffersrc.h"
# include "libavfilter/vsrc_buffer.h"
#endif
#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
+typedef struct FrameBuffer {
+ uint8_t *base[4];
+ uint8_t *data[4];
+ int linesize[4];
+
+ int h, w;
+ enum PixelFormat pix_fmt;
+
+ int refcount;
+ struct InputStream *ist;
+ struct FrameBuffer *next;
+} FrameBuffer;
+
typedef struct InputStream {
int file_index;
AVStream *st;
int is_start; /* is 1 at the start and after a discontinuity */
int showed_multi_packet_warning;
AVDictionary *opts;
+
+ /* a pool of free buffers for decoded data */
+ FrameBuffer *buffer_pool;
+ int dr1;
} InputStream;
typedef struct InputFile {
init_opts();
}
+static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
+{
+ AVCodecContext *s = ist->st->codec;
+ FrameBuffer *buf = av_mallocz(sizeof(*buf));
+ int ret, i;
+ const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
+ int h_chroma_shift, v_chroma_shift;
+ int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
+ int w = s->width, h = s->height;
+
+ if (!buf)
+ return AVERROR(ENOMEM);
+
+ if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
+ w += 2*edge;
+ h += 2*edge;
+ }
+
+ avcodec_align_dimensions(s, &w, &h);
+ if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
+ s->pix_fmt, 32)) < 0) {
+ av_freep(&buf);
+ return ret;
+ }
+ /* XXX this shouldn't be needed, but some tests break without this line
+ * those decoders are buggy and need to be fixed.
+ * the following tests fail:
+ * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
+ */
+ memset(buf->base[0], 128, ret);
+
+ avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
+ for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
+ const int h_shift = i==0 ? 0 : h_chroma_shift;
+ const int v_shift = i==0 ? 0 : v_chroma_shift;
+ if (s->flags & CODEC_FLAG_EMU_EDGE)
+ buf->data[i] = buf->base[i];
+ else
+ buf->data[i] = buf->base[i] +
+ FFALIGN((buf->linesize[i]*edge >> v_shift) +
+ (pixel_size*edge >> h_shift), 32);
+ }
+ buf->w = s->width;
+ buf->h = s->height;
+ buf->pix_fmt = s->pix_fmt;
+ buf->ist = ist;
+
+ *pbuf = buf;
+ return 0;
+}
+
+static void free_buffer_pool(InputStream *ist)
+{
+ FrameBuffer *buf = ist->buffer_pool;
+ while (buf) {
+ ist->buffer_pool = buf->next;
+ av_freep(&buf->base[0]);
+ av_free(buf);
+ buf = ist->buffer_pool;
+ }
+}
+
+static void unref_buffer(InputStream *ist, FrameBuffer *buf)
+{
+ av_assert0(buf->refcount);
+ buf->refcount--;
+ if (!buf->refcount) {
+ buf->next = ist->buffer_pool;
+ ist->buffer_pool = buf;
+ }
+}
+
+static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
+{
+ InputStream *ist = s->opaque;
+ FrameBuffer *buf;
+ int ret, i;
+
+ if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
+ return ret;
+
+ buf = ist->buffer_pool;
+ ist->buffer_pool = buf->next;
+ buf->next = NULL;
+ if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
+ av_freep(&buf->base[0]);
+ av_free(buf);
+ ist->dr1 = 0;
+ if ((ret = alloc_buffer(ist, &buf)) < 0)
+ return ret;
+ }
+ buf->refcount++;
+
+ frame->opaque = buf;
+ frame->type = FF_BUFFER_TYPE_USER;
+ frame->extended_data = frame->data;
+ frame->pkt_pts = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
+ frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
+ frame->data[i] = buf->data[i];
+ frame->linesize[i] = buf->linesize[i];
+ }
+
+ return 0;
+}
+
+static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
+{
+ InputStream *ist = s->opaque;
+ FrameBuffer *buf = frame->opaque;
+ int i;
+
+ if(frame->type!=FF_BUFFER_TYPE_USER)
+ return avcodec_default_release_buffer(s, frame);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
+ frame->data[i] = NULL;
+
+ unref_buffer(ist, buf);
+}
+
+static void filter_release_buffer(AVFilterBuffer *fb)
+{
+ FrameBuffer *buf = fb->priv;
+ av_free(fb);
+ unref_buffer(buf->ist, buf);
+}
+
#if CONFIG_AVFILTER
static int configure_video_filters(InputStream *ist, OutputStream *ost)
av_freep(&input_streams[i].decoded_frame);
av_freep(&input_streams[i].filtered_frame);
av_dict_free(&input_streams[i].opts);
+ free_buffer_pool(&input_streams[i]);
}
if (vstats_file)
if (!frame_sample_aspect->num)
*frame_sample_aspect = ist->st->sample_aspect_ratio;
decoded_frame->pts = ist->pts;
-
+ if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER) {
+ FrameBuffer *buf = decoded_frame->opaque;
+ AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
+ decoded_frame->data, decoded_frame->linesize,
+ AV_PERM_READ | AV_PERM_PRESERVE,
+ ist->st->codec->width, ist->st->codec->height,
+ ist->st->codec->pix_fmt);
+
+ avfilter_copy_frame_props(fb, decoded_frame);
+ fb->pts = ist->pts;
+ fb->buf->priv = buf;
+ fb->buf->free = filter_release_buffer;
+
+ buf->refcount++;
+ av_buffersrc_buffer(ost->input_video_filter, fb);
+ } else
if((av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE)) < 0){
av_log(0, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
exit_program(1);
avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
return AVERROR(EINVAL);
}
+
+ ist->dr1 = codec->capabilities & CODEC_CAP_DR1;
+ if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
+ ist->st->codec->get_buffer = codec_get_buffer;
+ ist->st->codec->release_buffer = codec_release_buffer;
+ ist->st->codec->opaque = ist;
+ }
+
if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
ist->file_index, ist->st->index);
codec->bit_rate = icodec->bit_rate;
codec->rc_max_rate = icodec->rc_max_rate;
codec->rc_buffer_size = icodec->rc_buffer_size;
+ codec->field_order = icodec->field_order;
codec->extradata = av_mallocz(extra_size);
if (!codec->extradata) {
return AVERROR(ENOMEM);
av_register_all();
avformat_network_init();
- show_banner();
+ show_banner(argc, argv, options);
term_init();
projects / ffmpeg / blobdiff