/*
- * Copyright (C) 2005 Ole Andr
é Vadla Ravnås <oleavr@gmail.com>
- * Copyright (C) 2008 Ramiro Polla <ramiro@lisha.ufsc.br>
+ * Copyright (C) 2005 Ole Andr
é Vadla Ravnås <oleavr@gmail.com>
+ * Copyright (C) 2008 Ramiro Polla
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "avcodec.h"
+#include "blockdsp.h"
+#include "internal.h"
#include "get_bits.h"
#include "bytestream.h"
-#include "dsputil.h"
+#include "bswapdsp.h"
+#include "hpeldsp.h"
+#include "idctdsp.h"
+#include "thread.h"
#define MIMIC_HEADER_SIZE 20
-typedef struct {
+typedef struct MimicContext {
AVCodecContext *avctx;
int num_vblocks[3];
int cur_index;
int prev_index;
- AVFrame buf_ptrs [16];
+ ThreadFrame frames [16];
AVPicture flipped_ptrs[16];
- DECLARE_ALIGNED(16, DCTELEM, dct_block)[64];
+ DECLARE_ALIGNED(16, int16_t, dct_block)[64];
GetBitContext gb;
ScanTable scantable;
- DSPContext dsp;
+ BlockDSPContext bdsp;
+ BswapDSPContext bbdsp;
+ HpelDSPContext hdsp;
+ IDCTDSPContext idsp;
VLC vlc;
+
+ /* Kept in the context so multithreading can have a constant to read from */
+ int next_cur_index;
+ int next_prev_index;
} MimicContext;
static const uint32_t huffcodes[] = {
53, 60, 61, 54, 47, 55, 62, 63,
};
+static av_cold int mimic_decode_end(AVCodecContext *avctx)
+{
+ MimicContext *ctx = avctx->priv_data;
+ int i;
+
+ av_free(ctx->swap_buf);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(ctx->frames); i++) {
+ if (ctx->frames[i].f)
+ ff_thread_release_buffer(avctx, &ctx->frames[i]);
+ av_frame_free(&ctx->frames[i].f);
+ }
+
+ if (!avctx->internal->is_copy)
+ ff_free_vlc(&ctx->vlc);
+
+ return 0;
+}
+
static av_cold int mimic_decode_init(AVCodecContext *avctx)
{
MimicContext *ctx = avctx->priv_data;
+ int ret, i;
+
+ avctx->internal->allocate_progress = 1;
ctx->prev_index = 0;
- ctx->cur_index = 15;
+ ctx->cur_index = 15;
- if(init_vlc(&ctx->vlc, 11, FF_ARRAY_ELEMS(huffbits),
- huffbits, 1, 1, huffcodes, 4, 4, 0)) {
+ if ((ret = init_vlc(&ctx->vlc, 11, FF_ARRAY_ELEMS(huffbits),
+ huffbits, 1, 1, huffcodes, 4, 4, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "error initializing vlc table\n");
- return -1;
+ return ret;
+ }
+ ff_blockdsp_init(&ctx->bdsp, avctx);
+ ff_bswapdsp_init(&ctx->bbdsp);
+ ff_hpeldsp_init(&ctx->hdsp, avctx->flags);
+ ff_idctdsp_init(&ctx->idsp, avctx);
+ ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable, col_zag);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(ctx->frames); i++) {
+ ctx->frames[i].f = av_frame_alloc();
+ if (!ctx->frames[i].f) {
+ mimic_decode_end(avctx);
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ return 0;
+}
+
+static int mimic_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from)
+{
+ MimicContext *dst = avctx->priv_data, *src = avctx_from->priv_data;
+ int i, ret;
+
+ if (avctx == avctx_from)
+ return 0;
+
+ dst->cur_index = src->next_cur_index;
+ dst->prev_index = src->next_prev_index;
+
+ memcpy(dst->flipped_ptrs, src->flipped_ptrs, sizeof(src->flipped_ptrs));
+
+ for (i = 0; i < FF_ARRAY_ELEMS(dst->frames); i++) {
+ ff_thread_release_buffer(avctx, &dst->frames[i]);
+ if (src->frames[i].f->data[0]) {
+ ret = ff_thread_ref_frame(&dst->frames[i], &src->frames[i]);
+ if (ret < 0)
+ return ret;
+ }
}
- dsputil_init(&ctx->dsp, avctx);
- ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, col_zag);
return 0;
}
static int vlc_decode_block(MimicContext *ctx, int num_coeffs, int qscale)
{
- DCTELEM *block = ctx->dct_block;
+ int16_t *block = ctx->dct_block;
unsigned int pos;
- ctx->dsp.clear_block(block);
+ ctx->bdsp.clear_block(block);
block[0] = get_bits(&ctx->gb, 8) << 3;
- for(pos = 1; pos < num_coeffs; pos++) {
+ for (pos = 1; pos < num_coeffs; pos++) {
uint32_t vlc, num_bits;
int value;
int coeff;
vlc = get_vlc2(&ctx->gb, ctx->vlc.table, ctx->vlc.bits, 3);
- if(!vlc) /* end-of-block code */
- return 1;
- if(vlc == -1)
+ if (!vlc) /* end-of-block code */
return 0;
+ if (vlc == -1)
+ return AVERROR_INVALIDDATA;
/* pos_add and num_bits are coded in the vlc code */
- pos += vlc&15; // pos_add
- num_bits = vlc>>4; // num_bits
+ pos += vlc & 15; // pos_add
+ num_bits = vlc >> 4; // num_bits
- if(pos >= 64)
- return 0;
+ if (pos >= 64)
+ return AVERROR_INVALIDDATA;
value = get_bits(&ctx->gb, num_bits);
- /* FFmpeg's IDCT behaves somewhat different from the original code, so
+ /* Libav's IDCT behaves somewhat different from the original code, so
* a factor of 4 was added to the input */
coeff = vlcdec_lookup[num_bits][value];
- if(pos<3)
+ if (pos < 3)
coeff <<= 4;
else /* TODO Use >> 10 instead of / 1001 */
coeff = (coeff * qscale) / 1001;
block[ctx->scantable.permutated[pos]] = coeff;
}
- return 1;
+ return 0;
}
static int decode(MimicContext *ctx, int quality, int num_coeffs,
int is_iframe)
{
- int y, x, plane;
+ int ret, y, x, plane, cur_row = 0;
- for(plane = 0; plane < 3; plane++) {
+ for (plane = 0; plane < 3; plane++) {
const int is_chroma = !!plane;
- const int qscale = av_clip(10000-quality,is_chroma?1000:2000,10000)<<2;
- const int stride = ctx->flipped_ptrs[ctx->cur_index].linesize[plane];
- const uint8_t *src = ctx->flipped_ptrs[ctx->prev_index].data[plane];
- uint8_t *dst = ctx->flipped_ptrs[ctx->cur_index ].data[plane];
-
- for(y = 0; y < ctx->num_vblocks[plane]; y++) {
- for(x = 0; x < ctx->num_hblocks[plane]; x++) {
-
+ const int qscale = av_clip(10000 - quality, is_chroma ? 1000 : 2000,
+ 10000) << 2;
+ const int stride = ctx->flipped_ptrs[ctx->cur_index ].linesize[plane];
+ const uint8_t *src = ctx->flipped_ptrs[ctx->prev_index].data[plane];
+ uint8_t *dst = ctx->flipped_ptrs[ctx->cur_index ].data[plane];
+
+ for (y = 0; y < ctx->num_vblocks[plane]; y++) {
+ for (x = 0; x < ctx->num_hblocks[plane]; x++) {
/* Check for a change condition in the current block.
* - iframes always change.
* - Luma plane changes on get_bits1 == 0
* - Chroma planes change on get_bits1 == 1 */
- if(is_iframe || get_bits1(&ctx->gb) == is_chroma) {
-
+ if (is_iframe || get_bits1(&ctx->gb) == is_chroma) {
/* Luma planes may use a backreference from the 15 last
* frames preceding the previous. (get_bits1 == 1)
* Chroma planes don't use backreferences. */
- if(is_chroma || is_iframe || !get_bits1(&ctx->gb)) {
-
- if(!vlc_decode_block(ctx, num_coeffs, qscale))
- return 0;
- ctx->dsp.idct_put(dst, stride, ctx->dct_block);
+ if (is_chroma || is_iframe || !get_bits1(&ctx->gb)) {
+ if ((ret = vlc_decode_block(ctx, num_coeffs,
+ qscale)) < 0) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Error decoding "
+ "block.\n");
+ return ret;
+ }
+ ctx->idsp.idct_put(dst, stride, ctx->dct_block);
} else {
unsigned int backref = get_bits(&ctx->gb, 4);
- int index = (ctx->cur_index+backref)&15;
- uint8_t *p = ctx->flipped_ptrs[index].data[0];
+ int index = (ctx->cur_index + backref) & 15;
+ uint8_t *p = ctx->flipped_ptrs[index].data[0];
- if(p) {
+ if (index != ctx->cur_index && p) {
+ ff_thread_await_progress(&ctx->frames[index],
+ cur_row, 0);
p += src -
- ctx->flipped_ptrs[ctx->prev_index].data[plane];
- ctx->dsp.put_pixels_tab[1][0](dst, p, stride, 8);
+ ctx->flipped_ptrs[ctx->prev_index].data[plane];
+ ctx->hdsp.put_pixels_tab[1][0](dst, p, stride, 8);
} else {
av_log(ctx->avctx, AV_LOG_ERROR,
"No such backreference! Buggy sample.\n");
}
}
} else {
- ctx->dsp.put_pixels_tab[1][0](dst, src, stride, 8);
+ ff_thread_await_progress(&ctx->frames[ctx->prev_index],
+ cur_row, 0);
+ ctx->hdsp.put_pixels_tab[1][0](dst, src, stride, 8);
}
src += 8;
dst += 8;
}
- src += (stride - ctx->num_hblocks[plane])<<3;
- dst += (stride - ctx->num_hblocks[plane])<<3;
+ src += (stride - ctx->num_hblocks[plane]) << 3;
+ dst += (stride - ctx->num_hblocks[plane]) << 3;
+
+ ff_thread_report_progress(&ctx->frames[ctx->cur_index],
+ cur_row++, 0);
}
}
- return 1;
+ return 0;
}
/**
* Flip the buffer upside-down and put it in the YVU order to match the
* way Mimic encodes frames.
*/
-static void prepare_avpic(MimicContext *ctx, AVPicture *dst, AVPicture *src)
+static void prepare_avpic(MimicContext *ctx, AVPicture *dst, AVFrame *src)
{
int i;
- dst->data[0] = src->data[0]+( ctx->avctx->height -1)*src->linesize[0];
- dst->data[1] = src->data[2]+((ctx->avctx->height>>1)-1)*src->linesize[2];
- dst->data[2] = src->data[1]+((ctx->avctx->height>>1)-1)*src->linesize[1];
- for(i = 0; i < 3; i++)
+ dst->data[0] = src->data[0] + ( ctx->avctx->height - 1) * src->linesize[0];
+ dst->data[1] = src->data[2] + ((ctx->avctx->height >> 1) - 1) * src->linesize[2];
+ dst->data[2] = src->data[1] + ((ctx->avctx->height >> 1) - 1) * src->linesize[1];
+ for (i = 0; i < 3; i++)
dst->linesize[i] = -src->linesize[i];
}
static int mimic_decode_frame(AVCodecContext *avctx, void *data,
- int *data_size, AVPacket *avpkt)
+ int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- MimicContext *ctx = avctx->priv_data;
+ int buf_size = avpkt->size;
+ int swap_buf_size = buf_size - MIMIC_HEADER_SIZE;
+ MimicContext *ctx = avctx->priv_data;
+ GetByteContext gb;
int is_pframe;
int width, height;
int quality, num_coeffs;
- int swap_buf_size = buf_size - MIMIC_HEADER_SIZE;
+ int res;
- if(buf_size < MIMIC_HEADER_SIZE) {
+ if (buf_size <= MIMIC_HEADER_SIZE) {
av_log(avctx, AV_LOG_ERROR, "insufficient data\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- buf += 2; /* some constant (always 256) */
- quality = bytestream_get_le16(&buf);
- width = bytestream_get_le16(&buf);
- height = bytestream_get_le16(&buf);
- buf += 4; /* some constant */
- is_pframe = bytestream_get_le32(&buf);
- num_coeffs = bytestream_get_byte(&buf);
- buf += 3; /* some constant */
-
- if(!ctx->avctx) {
+ bytestream2_init(&gb, buf, MIMIC_HEADER_SIZE);
+ bytestream2_skip(&gb, 2); /* some constant (always 256) */
+ quality = bytestream2_get_le16u(&gb);
+ width = bytestream2_get_le16u(&gb);
+ height = bytestream2_get_le16u(&gb);
+ bytestream2_skip(&gb, 4); /* some constant */
+ is_pframe = bytestream2_get_le32u(&gb);
+ num_coeffs = bytestream2_get_byteu(&gb);
+ bytestream2_skip(&gb, 3); /* some constant */
+
+ if (!ctx->avctx) {
int i;
- if(!(width == 160 && height == 120) &&
- !(width == 320 && height == 240)) {
+ if (!(width == 160 && height == 120) &&
+ !(width == 320 && height == 240)) {
av_log(avctx, AV_LOG_ERROR, "invalid width/height!\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
ctx->avctx = avctx;
avctx->width = width;
avctx->height = height;
- avctx->pix_fmt = PIX_FMT_YUV420P;
- for(i = 0; i < 3; i++) {
+ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
+ for (i = 0; i < 3; i++) {
ctx->num_vblocks[i] = -((-height) >> (3 + !!i));
- ctx->num_hblocks[i] = width >> (3 + !!i) ;
+ ctx->num_hblocks[i] = width >> (3 + !!i);
}
- } else if(width != ctx->avctx->width || height != ctx->avctx->height) {
- av_log(avctx, AV_LOG_ERROR, "resolution changing is not supported\n");
- return -1;
+ } else if (width != ctx->avctx->width || height != ctx->avctx->height) {
+ avpriv_request_sample(avctx, "Resolution changing");
+ return AVERROR_PATCHWELCOME;
}
- if(is_pframe && !ctx->buf_ptrs[ctx->prev_index].data[0]) {
+ if (is_pframe && !ctx->frames[ctx->prev_index].f->data[0]) {
av_log(avctx, AV_LOG_ERROR, "decoding must start with keyframe\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- ctx->buf_ptrs[ctx->cur_index].reference = 1;
- if(avctx->get_buffer(avctx, &ctx->buf_ptrs[ctx->cur_index])) {
+ ff_thread_release_buffer(avctx, &ctx->frames[ctx->cur_index]);
+ ctx->frames[ctx->cur_index].f->pict_type = is_pframe ? AV_PICTURE_TYPE_P :
+ AV_PICTURE_TYPE_I;
+ if ((res = ff_thread_get_buffer(avctx, &ctx->frames[ctx->cur_index],
+ AV_GET_BUFFER_FLAG_REF)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return res;
}
+ ctx->next_prev_index = ctx->cur_index;
+ ctx->next_cur_index = (ctx->cur_index - 1) & 15;
+
prepare_avpic(ctx, &ctx->flipped_ptrs[ctx->cur_index],
- (AVPicture*) &ctx->buf_ptrs[ctx->cur_index]);
+ ctx->frames[ctx->cur_index].f);
+
+ ff_thread_finish_setup(avctx);
- av_fast_malloc(&ctx->swap_buf, &ctx->swap_buf_size,
- swap_buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- if(!ctx->swap_buf)
+ av_fast_padded_malloc(&ctx->swap_buf, &ctx->swap_buf_size, swap_buf_size);
+ if (!ctx->swap_buf)
return AVERROR(ENOMEM);
- ctx->dsp.bswap_buf(ctx->swap_buf,
- (const uint32_t*) buf,
- swap_buf_size>>2);
+ ctx->bbdsp.bswap_buf(ctx->swap_buf,
+ (const uint32_t *) (buf + MIMIC_HEADER_SIZE),
+ swap_buf_size >> 2);
init_get_bits(&ctx->gb, ctx->swap_buf, swap_buf_size << 3);
- if(!decode(ctx, quality, num_coeffs, !is_pframe)) {
- avctx->release_buffer(avctx, &ctx->buf_ptrs[ctx->cur_index]);
- return -1;
+ res = decode(ctx, quality, num_coeffs, !is_pframe);
+ ff_thread_report_progress(&ctx->frames[ctx->cur_index], INT_MAX, 0);
+ if (res < 0) {
+ if (!(avctx->active_thread_type & FF_THREAD_FRAME)) {
+ ff_thread_release_buffer(avctx, &ctx->frames[ctx->cur_index]);
+ return res;
+ }
}
- ctx->buf_ptrs[ctx->cur_index].pict_type = is_pframe ? FF_P_TYPE:FF_I_TYPE;
- *(AVFrame*)data = ctx->buf_ptrs[ctx->cur_index];
- *data_size = sizeof(AVFrame);
+ if ((res = av_frame_ref(data, ctx->frames[ctx->cur_index].f)) < 0)
+ return res;
+ *got_frame = 1;
- ctx->prev_index = ctx->cur_index;
- ctx->cur_index--;
- ctx->cur_index &= 15;
+ ctx->prev_index = ctx->next_prev_index;
+ ctx->cur_index = ctx->next_cur_index;
/* Only release frames that aren't used for backreferences anymore */
- if(ctx->buf_ptrs[ctx->cur_index].data[0])
- avctx->release_buffer(avctx, &ctx->buf_ptrs[ctx->cur_index]);
+ ff_thread_release_buffer(avctx, &ctx->frames[ctx->cur_index]);
return buf_size;
}
-static av_cold int mimic_decode_end(AVCodecContext *avctx)
+static av_cold int mimic_init_thread_copy(AVCodecContext *avctx)
{
MimicContext *ctx = avctx->priv_data;
int i;
- av_free(ctx->swap_buf);
- for(i = 0; i < 16; i++)
- if(ctx->buf_ptrs[i].data[0])
- avctx->release_buffer(avctx, &ctx->buf_ptrs[i]);
- free_vlc(&ctx->vlc);
+ for (i = 0; i < FF_ARRAY_ELEMS(ctx->frames); i++) {
+ ctx->frames[i].f = av_frame_alloc();
+ if (!ctx->frames[i].f) {
+ mimic_decode_end(avctx);
+ return AVERROR(ENOMEM);
+ }
+ }
return 0;
}
-AVCodec mimic_decoder = {
- "mimic",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_MIMIC,
- sizeof(MimicContext),
- mimic_decode_init,
- NULL,
- mimic_decode_end,
- mimic_decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Mimic"),
+AVCodec ff_mimic_decoder = {
+ .name = "mimic",
+ .long_name = NULL_IF_CONFIG_SMALL("Mimic"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MIMIC,
+ .priv_data_size = sizeof(MimicContext),
+ .init = mimic_decode_init,
+ .close = mimic_decode_end,
+ .decode = mimic_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
+ .update_thread_context = ONLY_IF_THREADS_ENABLED(mimic_decode_update_thread_context),
+ .init_thread_copy = ONLY_IF_THREADS_ENABLED(mimic_init_thread_copy),
};
projects / ffmpeg / blobdiff